JavaScript常用工具方法封装

程序员文章站 2022-05-17 14:51:29

因为工作中经常用到这些方法，所有便把这些方法进行了总结。 javascript 1. type 类型判断 isstring (o) { //是否字符串...

因为工作中经常用到这些方法，所有便把这些方法进行了总结。

javascript

1. type 类型判断

isstring (o) { //是否字符串
  return object.prototype.tostring.call(o).slice(8, -1) === 'string'
}
isnumber (o) { //是否数字
  return object.prototype.tostring.call(o).slice(8, -1) === 'number'
}
isboolean (o) { //是否boolean
  return object.prototype.tostring.call(o).slice(8, -1) === 'boolean'
}
isfunction (o) { //是否函数
  return object.prototype.tostring.call(o).slice(8, -1) === 'function'
}
isnull (o) { //是否为null
  return object.prototype.tostring.call(o).slice(8, -1) === 'null'
}
isundefined (o) { //是否undefined
  return object.prototype.tostring.call(o).slice(8, -1) === 'undefined'
}
isobj (o) { //是否对象
  return object.prototype.tostring.call(o).slice(8, -1) === 'object'
}
isarray (o) { //是否数组
  return object.prototype.tostring.call(o).slice(8, -1) === 'array'
}
isdate (o) { //是否时间
  return object.prototype.tostring.call(o).slice(8, -1) === 'date'
}
isregexp (o) { //是否正则
  return object.prototype.tostring.call(o).slice(8, -1) === 'regexp'
}
iserror (o) { //是否错误对象
  return object.prototype.tostring.call(o).slice(8, -1) === 'error'
}
issymbol (o) { //是否symbol函数
  return object.prototype.tostring.call(o).slice(8, -1) === 'symbol'
}
ispromise (o) { //是否promise对象
  return object.prototype.tostring.call(o).slice(8, -1) === 'promise'
}
isset (o) { //是否set对象
  return object.prototype.tostring.call(o).slice(8, -1) === 'set'
}
isfalse (o) {
  if (!o || o === 'null' || o === 'undefined' || o === 'false' || o === 'nan') return true
    return false
}
istrue (o) {
  return !this.isfalse(o)
}
isios () {
  var u = navigator.useragent;
  if (u.indexof('android') > -1 || u.indexof('linux') > -1) {//安卓手机
    // return "android";
    return false
  } else if (u.indexof('iphone') > -1) {//苹果手机
    // return "iphone";
    return true
  } else if (u.indexof('ipad') > -1) {//ipad
    // return "ipad";
    return false
  } else if (u.indexof('windows phone') > -1) {//winphone手机
    // return "windows phone";
    return false
  }else{
    return false
  }
}
ispc () { //是否为pc端
  var useragentinfo = navigator.useragent;
  var agents = ["android", "iphone",
        "symbianos", "windows phone",
        "ipad", "ipod"];
  var flag = true;
  for (var v = 0; v < agents.length; v++) {
    if (useragentinfo.indexof(agents[v]) > 0) {
      flag = false;
      break;
    }
  }
  return flag;
}
browsertype(){
  var useragent = navigator.useragent; //取得浏览器的useragent字符串
  var isopera = useragent.indexof("opera") > -1; //判断是否opera浏览器
  var isie = useragent.indexof("compatible") > -1 && useragent.indexof("msie") > -1 && !isopera; //判断是否ie浏览器
  var isie11 = useragent.indexof('trident') > -1 && useragent.indexof("rv:11.0") > -1;
  var isedge = useragent.indexof("edge") > -1 && !isie; //判断是否ie的edge浏览器 
  var isff = useragent.indexof("firefox") > -1; //判断是否firefox浏览器
  var issafari = useragent.indexof("safari") > -1 && useragent.indexof("chrome") == -1; //判断是否safari浏览器
  var ischrome = useragent.indexof("chrome") > -1 && useragent.indexof("safari") > -1; //判断chrome浏览器
  if (isie) {
    var reie = new regexp("msie (\\d+\\.\\d+);");
    reie.test(useragent);
    var fieversion = parsefloat(regexp["$1"]);
    if(fieversion == 7) return "ie7"
    else if(fieversion == 8) return "ie8";
    else if(fieversion == 9) return "ie9";
    else if(fieversion == 10) return "ie10";
    else return "ie7以下"//ie版本过低
  }
  if (isie11) return 'ie11';
  if (isedge) return "edge";
  if (isff) return "ff";
  if (isopera) return "opera";
  if (issafari) return "safari";
  if (ischrome) return "chrome";
}
checkstr (str, type) {
  switch (type) {
    case 'phone':  //手机号码
      return /^1[3|4|5|6|7|8|9][0-9]{9}$/.test(str);
    case 'tel':   //座机
      return /^(0\d{2,3}-\d{7,8})(-\d{1,4})?$/.test(str);
    case 'card':  //身份证
      return /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|x|x)$)/.test(str);
    case 'pwd':   //密码以字母开头，长度在6~18之间，只能包含字母、数字和下划线
      return /^[a-za-z]\w{5,17}$/.test(str)
    case 'postal': //邮政编码
      return /[1-9]\d{5}(?!\d)/.test(str);
    case 'qq':   //qq号
      return /^[1-9][0-9]{4,9}$/.test(str);
    case 'email':  //邮箱
      return /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.test(str);
    case 'money':  //金额(小数点2位)
      return /^\d*(?:\.\d{0,2})?$/.test(str);
    case 'url':   //网址
      return /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/.test(str)
    case 'ip':   //ip
      return /((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))/.test(str);
    case 'date':  //日期时间
      return /^(\d{4})\-(\d{2})\-(\d{2}) (\d{2})(?:\:\d{2}|:(\d{2}):(\d{2}))$/.test(str) || /^(\d{4})\-(\d{2})\-(\d{2})$/.test(str)
    case 'number': //数字
      return /^[0-9]$/.test(str);
    case 'english': //英文
      return /^[a-za-z]+$/.test(str);
    case 'chinese': //中文
      return /^[\u4e00-\u9fa5]+$/.test(str);
    case 'lower':  //小写
      return /^[a-z]+$/.test(str);
    case 'upper':  //大写
      return /^[a-z]+$/.test(str);
    case 'html':  //html标记
      return /<("[^"]*"|'[^']*'|[^'">])*>/.test(str);
    default:
      return true;
  }
  // 严格的身份证校验
  iscardid(sid) {
    if (!/(^\d{15}$)|(^\d{17}(\d|x|x)$)/.test(sid)) {
      alert('你输入的身份证长度或格式错误')
      return false
    }
    //身份证城市
    var acity={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"*",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"*",71:"*",81:"香港",82:"澳门",91:"国外"};
    if(!acity[parseint(sid.substr(0,2))]) { 
      alert('你的身份证地区非法')
      return false
    }
    // 出生日期验证
    var sbirthday=(sid.substr(6,4)+"-"+number(sid.substr(10,2))+"-"+number(sid.substr(12,2))).replace(/-/g,"/"),
      d = new date(sbirthday)
    if(sbirthday != (d.getfullyear()+"/"+ (d.getmonth()+1) + "/" + d.getdate())) {
      alert('身份证上的出生日期非法')
      return false
    }
    // 身份证号码校验
    var sum = 0,
      weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2],
      codes = "10x98765432"
    for (var i = 0; i < sid.length - 1; i++) {
      sum += sid[i] * weights[i];
    }
    var last = codes[sum % 11]; //计算出来的最后一位身份证号码
    if (sid[sid.length-1] != last) { 
      alert('你输入的身份证号非法')
      return false
    }
    return true
  }
}

2. date

/**
 * 格式化时间
 * @param {time} 时间
 * @param {cformat} 格式
 * @return {string} 字符串
 * @example formattime('2018-1-29', '{y}/{m}/{d} {h}:{i}:{s}') // -> 2018/01/29 00:00:00
 */
formattime(time, cformat) {
  if (arguments.length === 0) return null
  if ((time + '').length === 10) {
    time = +time * 1000
  }
  var format = cformat || '{y}-{m}-{d} {h}:{i}:{s}', date
  if (typeof time === 'object') {
    date = time
  } else {
    date = new date(time)
  }
  var formatobj = {
    y: date.getfullyear(),
    m: date.getmonth() + 1,
    d: date.getdate(),
    h: date.gethours(),
    i: date.getminutes(),
    s: date.getseconds(),
    a: date.getday()
  }
  var time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
    var value = formatobj[key]
    if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
    if (result.length > 0 && value < 10) {
      value = '0' + value
    }
    return value || 0
  })
  return time_str
}
/**
 * 返回指定长度的月份集合
 * @param {time} 时间
 * @param {len} 长度
 * @param {direction} 方向： 1: 前几个月; 2: 后几个月; 3:前后几个月 默认 3
 * @return {array} 数组
 * @example  getmonths('2018-1-29', 6, 1) // -> ["2018-1", "2017-12", "2017-11", "2017-10", "2017-9", "2017-8", "2017-7"]
 */
getmonths(time, len, direction) {
  var mm = new date(time).getmonth(),
    yy = new date(time).getfullyear(),
    direction = isnan(direction) ? 3 : direction,
    index = mm;
  var cutmonth = function(index) {
    if ( index <= len && index >= -len) {
      return direction === 1 ? formatpre(index).concat(cutmonth(++index)):
        direction === 2 ? formatnext(index).concat(cutmonth(++index)):formatcurr(index).concat(cutmonth(++index))
    }
    return []
  }
  var formatnext = function(i) {
    var y = math.floor(i/12),
      m = i%12
    return [yy+y + '-' + (m+1)]
  }
  var formatpre = function(i) {
    var y = math.ceil(i/12),
      m = i%12
    m = m===0 ? 12 : m
    return [yy-y + '-' + (13 - m)]
  }
  var formatcurr = function(i) {
    var y = math.floor(i/12),
      ynext = math.ceil(i/12),
      m = i%12,
      mnext = m===0 ? 12 : m
    return [yy-ynext + '-' + (13 - mnext),yy+y + '-' + (m+1)]
  }
  // 数组去重
  var unique = function(arr) {
    if ( array.hasownproperty('from') ) {
      return array.from(new set(arr));
    }else{
      var n = {},r=[]; 
      for(var i = 0; i < arr.length; i++){
        if (!n[arr[i]]){
          n[arr[i]] = true; 
          r.push(arr[i]);
        }
      }
      return r;
    }
  }
  return direction !== 3 ? cutmonth(index) : unique(cutmonth(index).sort(function(t1, t2){
    return new date(t1).gettime() - new date(t2).gettime()
  }))
}
/**
 * 返回指定长度的天数集合
 * @param {time} 时间
 * @param {len} 长度
 * @param {direction} 方向： 1: 前几天; 2: 后几天; 3:前后几天 默认 3
 * @return {array} 数组
 * @example date.getdays('2018-1-29', 6) // -> ["2018-1-26", "2018-1-27", "2018-1-28", "2018-1-29", "2018-1-30", "2018-1-31", "2018-2-1"]
 */
getdays(time, len, diretion) {
  var tt = new date(time)
  var getday = function(day) {
    var t = new date(time)
    t.setdate(t.getdate() + day)
    var m = t.getmonth()+1
    return t.getfullyear()+'-'+m+'-'+t.getdate()
  }
  var arr = []
  if (diretion === 1) {
    for (var i = 1; i <= len; i++) {
      arr.unshift(getday(-i))
    }
  }else if(diretion === 2) {
    for (var i = 1; i <= len; i++) {
      arr.push(getday(i))
    }
  }else {
    for (var i = 1; i <= len; i++) {
      arr.unshift(getday(-i))
    }
    arr.push(tt.getfullyear()+'-'+(tt.getmonth()+1)+'-'+tt.getdate())
    for (var i = 1; i <= len; i++) {
      arr.push(getday(i))
    }
  }
  return diretion === 1 ? arr.concat([tt.getfullyear()+'-'+(tt.getmonth()+1)+'-'+tt.getdate()]) : 
    diretion === 2 ? [tt.getfullyear()+'-'+(tt.getmonth()+1)+'-'+tt.getdate()].concat(arr) : arr
}
/**
 * @param {s} 秒数
 * @return {string} 字符串 
 * @example formathms(3610) // -> 1h0m10s
 */
formathms (s) {
  var str = ''
  if (s > 3600) {
    str = math.floor(s/3600)+'h'+math.floor(s%3600/60)+'m'+s%60+'s'
  }else if(s > 60) {
    str = math.floor(s/60)+'m'+s%60+'s'
  }else{
    str = s%60+'s'
  }
  return str
}
/*获取某月有多少天*/
getmonthofday (time) {
  var date = new date(time)
  var year = date.getfullyear()
  var mouth = date.getmonth() + 1
  var days
  //当月份为二月时，根据闰年还是非闰年判断天数
  if (mouth == 2) {
    days = (year%4==0 && year%100==0 && year%400==0) || (year%4==0 && year%100!=0) ? 28 : 29
  } else if (mouth == 1 || mouth == 3 || mouth == 5 || mouth == 7 || mouth == 8 || mouth == 10 || mouth == 12) {
    //月份为：1,3,5,7,8,10,12 时，为大月.则天数为31；
    days = 31
  } else {
    //其他月份，天数为：30.
    days = 30
  }
  return days
}
/*获取某年有多少天*/
getyearofday (time) {
  var firstdayyear = this.getfirstdayofyear(time);
  var lastdayyear = this.getlastdayofyear(time);
  var numsecond = (new date(lastdayyear).gettime() - new date(firstdayyear).gettime())/1000;
  return math.ceil(numsecond/(24*3600));
}
/*获取某年的第一天*/
getfirstdayofyear (time) {
  var year = new date(time).getfullyear();
  return year + "-01-01 00:00:00";
}
/*获取某年最后一天*/
getlastdayofyear (time) {
  var year = new date(time).getfullyear();
  var datestring = year + "-12-01 00:00:00";
  var endday = this.getmonthofday(datestring);
  return year + "-12-" + endday + " 23:59:59";
}
/*获取某个日期是当年中的第几天*/
getdayofyear (time) {
  var firstdayyear = this.getfirstdayofyear(time);
  var numsecond = (new date(time).gettime() - new date(firstdayyear).gettime())/1000;
  return math.ceil(numsecond/(24*3600));
}
/*获取某个日期在这一年的第几周*/
getdayofyearweek (time) {
  var numdays = this.getdayofyear(time);
  return math.ceil(numdays / 7);
}

3. array

/*判断一个元素是否在数组中*/
contains (arr, val) {
  return arr.indexof(val) != -1 ? true : false;
}
/**
 * @param {arr} 数组
 * @param {fn} 回调函数
 * @return {undefined}
 */
each (arr, fn) {
  fn = fn || function;
  var a = [];
  var args = array.prototype.slice.call(arguments, 1);
  for(var i = 0; i < arr.length; i++) {
    var res = fn.apply(arr, [arr[i], i].concat(args));
    if(res != null) a.push(res);
  }
}
/**
 * @param {arr} 数组
 * @param {fn} 回调函数
 * @param {thisobj} this指向
 * @return {array} 
 */
map (arr, fn, thisobj) {
  var scope = thisobj || window;
  var a = [];
  for(var i = 0, j = arr.length; i < j; ++i) {
    var res = fn.call(scope, arr[i], i, this);
    if(res != null) a.push(res);
  }
  return a;
}
/**
 * @param {arr} 数组
 * @param {type} 1：从小到大  2：从大到小  3：随机
 * @return {array}
 */
sort (arr, type = 1) {
  return arr.sort( (a, b) => {
    switch(type) {
      case 1:
        return a - b;
      case 2:
        return b - a;
      case 3:
        return math.random() - 0.5;
      default:
        return arr;
    }
  })
}
/*去重*/
unique (arr) {
  if ( array.hasownproperty('from') ) {
    return array.from(new set(arr));
  }else{
    var n = {},r=[]; 
    for(var i = 0; i < arr.length; i++){
      if (!n[arr[i]]){
        n[arr[i]] = true; 
        r.push(arr[i]);
      }
    }
    return r;
  }
  // 注：上面 else 里面的排重并不能区分 2 和 '2'，但能减少用indexof带来的性能,暂时没找到替代的方法。。。
  /* 正确排重
  if ( array.hasownproperty('from') ) {
    return array.from(new set(arr))
  }else{
    var r = [], nanbol = true
    for(var i=0; i < arr.length; i++) {
      if (arr[i] !== arr[i]) {
        if (nanbol && r.indexof(arr[i]) === -1) {
          r.push(arr[i])
          nanbol = false
        }
      }else{
        if(r.indexof(arr[i]) === -1) r.push(arr[i])
      }
    }
    return r
  }
   */
}
/*求两个集合的并集*/
union (a, b) {
  var newarr = a.concat(b);
  return this.unique(newarr);
}
/*求两个集合的交集*/
intersect (a, b) {
  var _this = this;
  a = this.unique(a);
  return this.map(a, function(o) {
    return _this.contains(b, o) ? o : null;
  });
}
/*删除其中一个元素*/
remove (arr, ele) {
  var index = arr.indexof(ele);
  if(index > -1) {
    arr.splice(index, 1);
  }
  return arr;
}
/*将类数组转换为数组的方法*/
formarray (ary) {
  var arr = [];
  if(array.isarray(ary)) {
    arr = ary;
  } else {
    arr = array.prototype.slice.call(ary);
  };
  return arr;
}
/*最大值*/
max (arr) {
  return math.max.apply(null, arr);
}
/*最小值*/
min (arr) {
  return math.min.apply(null, arr);
}
/*求和*/
sum (arr) {
  return arr.reduce( (pre, cur) => {
    return pre + cur
  })
}
/*平均值*/
average (arr) {
  return this.sum(arr)/arr.length
}

4. string 字符串操作

/**
 * 去除空格
 * @param {str}
 * @param {type} 
 *    type: 1-所有空格 2-前后空格 3-前空格 4-后空格
 * @return {string}
 */
trim (str, type) {
  type = type || 1
  switch (type) {
    case 1:
      return str.replace(/\s+/g, "");
    case 2:
      return str.replace(/(^\s*)|(\s*$)/g, "");
    case 3:
      return str.replace(/(^\s*)/g, "");
    case 4:
      return str.replace(/(\s*$)/g, "");
    default:
      return str;
  }
}
/**
 * @param {str} 
 * @param {type}
 *    type: 1:首字母大写 2：首页母小写 3：大小写转换 4：全部大写 5：全部小写
 * @return {string}
 */
changecase (str, type) {
  type = type || 4
  switch (type) {
    case 1:
      return str.replace(/\b\w+\b/g, function (word) {
        return word.substring(0, 1).touppercase() + word.substring(1).tolowercase();
      });
    case 2:
      return str.replace(/\b\w+\b/g, function (word) {
        return word.substring(0, 1).tolowercase() + word.substring(1).touppercase();
      });
    case 3:
      return str.split('').map( function(word){
        if (/[a-z]/.test(word)) {
          return word.touppercase();
        }else{
          return word.tolowercase()
        }
      }).join('')
    case 4:
      return str.touppercase();
    case 5:
      return str.tolowercase();
    default:
      return str;
  }
}
/*
  检测密码强度
*/
checkpwd (str) {
  var lv = 0;
  if (str.length < 6) {
    return lv
  }
  if (/[0-9]/.test(str)) {
    lv++
  }
  if (/[a-z]/.test(str)) {
    lv++
  }
  if (/[a-z]/.test(str)) {
    lv++
  }
  if (/[\.|-|_]/.test(str)) {
    lv++
  }
  return lv;
}
/*过滤html代码(把<>转换)*/
filtertag (str) {
  str = str.replace(/&/ig, "&");
  str = str.replace(/</ig, "<");
  str = str.replace(/>/ig, ">");
  str = str.replace(" ", " ");
  return str;
}

5. number

/*随机数范围*/
random (min, max) {
  if (arguments.length === 2) {
    return math.floor(min + math.random() * ( (max+1) - min ))
  }else{
    return null;
  }
}
/*将阿拉伯数字翻译成中文的大写数字*/
numbertochinese (num) {
  var aa = new array("零", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十");
  var bb = new array("", "十", "百", "仟", "萬", "億", "点", "");
  var a = ("" + num).replace(/(^0*)/g, "").split("."),
    k = 0,
    re = "";
  for(var i = a[0].length - 1; i >= 0; i--) {
    switch(k) {
      case 0:
        re = bb[7] + re;
        break;
      case 4:
        if(!new regexp("0{4}//d{" + (a[0].length - i - 1) + "}$")
          .test(a[0]))
          re = bb[4] + re;
        break;
      case 8:
        re = bb[5] + re;
        bb[7] = bb[5];
        k = 0;
        break;
    }
    if(k % 4 == 2 && a[0].charat(i + 2) != 0 && a[0].charat(i + 1) == 0)
      re = aa[0] + re;
    if(a[0].charat(i) != 0)
      re = aa[a[0].charat(i)] + bb[k % 4] + re;
    k++;
  }
  if(a.length > 1) // 加上小数部分(如果有小数部分)
  {
    re += bb[6];
    for(var i = 0; i < a[1].length; i++)
      re += aa[a[1].charat(i)];
  }
  if(re == '一十')
    re = "十";
  if(re.match(/^一/) && re.length == 3)
    re = re.replace("一", "");
  return re;
}
/*将数字转换为大写金额*/
changetochinese (num) {
    //判断如果传递进来的不是字符的话转换为字符
    if(typeof num == "number") {
      num = new string(num);
    };
    num = num.replace(/,/g, "") //替换tomoney()中的“,”
    num = num.replace(/ /g, "") //替换tomoney()中的空格
    num = num.replace(/￥/g, "") //替换掉可能出现的￥字符
    if(isnan(num)) { //验证输入的字符是否为数字
      //alert("请检查小写金额是否正确");
      return "";
    };
    //字符处理完毕后开始转换，采用前后两部分分别转换
    var part = string(num).split(".");
    var newchar = "";
    //小数点前进行转化
    for(var i = part[0].length - 1; i >= 0; i--) {
      if(part[0].length > 10) {
        return "";
        //若数量超过拾亿单位，提示
      }
      var tmpnewchar = ""
      var perchar = part[0].charat(i);
      switch(perchar) {
        case "0":
          tmpnewchar = "零" + tmpnewchar;
          break;
        case "1":
          tmpnewchar = "壹" + tmpnewchar;
          break;
        case "2":
          tmpnewchar = "贰" + tmpnewchar;
          break;
        case "3":
          tmpnewchar = "叁" + tmpnewchar;
          break;
        case "4":
          tmpnewchar = "肆" + tmpnewchar;
          break;
        case "5":
          tmpnewchar = "伍" + tmpnewchar;
          break;
        case "6":
          tmpnewchar = "陆" + tmpnewchar;
          break;
        case "7":
          tmpnewchar = "柒" + tmpnewchar;
          break;
        case "8":
          tmpnewchar = "捌" + tmpnewchar;
          break;
        case "9":
          tmpnewchar = "玖" + tmpnewchar;
          break;
      }
      switch(part[0].length - i - 1) {
        case 0:
          tmpnewchar = tmpnewchar + "元";
          break;
        case 1:
          if(perchar != 0) tmpnewchar = tmpnewchar + "拾";
          break;
        case 2:
          if(perchar != 0) tmpnewchar = tmpnewchar + "佰";
          break;
        case 3:
          if(perchar != 0) tmpnewchar = tmpnewchar + "仟";
          break;
        case 4:
          tmpnewchar = tmpnewchar + "万";
          break;
        case 5:
          if(perchar != 0) tmpnewchar = tmpnewchar + "拾";
          break;
        case 6:
          if(perchar != 0) tmpnewchar = tmpnewchar + "佰";
          break;
        case 7:
          if(perchar != 0) tmpnewchar = tmpnewchar + "仟";
          break;
        case 8:
          tmpnewchar = tmpnewchar + "亿";
          break;
        case 9:
          tmpnewchar = tmpnewchar + "拾";
          break;
      }
      var newchar = tmpnewchar + newchar;
    }
    //小数点之后进行转化
    if(num.indexof(".") != -1) {
      if(part[1].length > 2) {
        // alert("小数点之后只能保留两位,系统将自动截断");
        part[1] = part[1].substr(0, 2)
      }
      for(i = 0; i < part[1].length; i++) {
        tmpnewchar = ""
        perchar = part[1].charat(i)
        switch(perchar) {
          case "0":
            tmpnewchar = "零" + tmpnewchar;
            break;
          case "1":
            tmpnewchar = "壹" + tmpnewchar;
            break;
          case "2":
            tmpnewchar = "贰" + tmpnewchar;
            break;
          case "3":
            tmpnewchar = "叁" + tmpnewchar;
            break;
          case "4":
            tmpnewchar = "肆" + tmpnewchar;
            break;
          case "5":
            tmpnewchar = "伍" + tmpnewchar;
            break;
          case "6":
            tmpnewchar = "陆" + tmpnewchar;
            break;
          case "7":
            tmpnewchar = "柒" + tmpnewchar;
            break;
          case "8":
            tmpnewchar = "捌" + tmpnewchar;
            break;
          case "9":
            tmpnewchar = "玖" + tmpnewchar;
            break;
        }
        if(i == 0) tmpnewchar = tmpnewchar + "角";
        if(i == 1) tmpnewchar = tmpnewchar + "分";
        newchar = newchar + tmpnewchar;
      }
    }
    //替换所有无用汉字
    while(newchar.search("零零") != -1)
      newchar = newchar.replace("零零", "零");
    newchar = newchar.replace("零亿", "亿");
    newchar = newchar.replace("亿万", "亿");
    newchar = newchar.replace("零万", "万");
    newchar = newchar.replace("零元", "元");
    newchar = newchar.replace("零角", "");
    newchar = newchar.replace("零分", "");
    if(newchar.charat(newchar.length - 1) == "元") {
      newchar = newchar + "整"
    }
    return newchar;
  }

6. http

/**
 * @param {setting}
 */
ajax(setting){
  //设置参数的初始值
  var opts={
    method: (setting.method || "get").touppercase(), //请求方式
    url: setting.url || "", // 请求地址
    async: setting.async || true, // 是否异步
    datatype: setting.datatype || "json", // 解析方式
    data: setting.data || "", // 参数
    success: setting.success || function(){}, // 请求成功回调
    error: setting.error || function(){} // 请求失败回调
  }
  // 参数格式化
  function params_format (obj) {
    var str = ''
    for (var i in obj) {
      str += i + '=' + obj[i] + '&'
    }
    return str.split('').slice(0, -1).join('')
  }
  // 创建ajax对象
  var xhr=new xmlhttprequest();
  // 连接服务器open(方法get/post，请求地址， 异步传输)
  if(opts.method == 'get'){
    xhr.open(opts.method, opts.url + "?" + params_format(opts.data), opts.async);
    xhr.send();
  }else{
    xhr.open(opts.method, opts.url, opts.async);
    xhr.setrequestheader("content-type","application/x-www-form-urlencoded");
    xhr.send(opts.data);
  }
  /*
  ** 每当readystate改变时，就会触发onreadystatechange事件
  ** readystate属性存储有xmlhttprequest的状态信息
  ** 0 ：请求未初始化
  ** 1 ：服务器连接已建立
  ** 2 ：请求已接受
  ** 3 : 请求处理中
  ** 4 ：请求已完成，且相应就绪
  */
  xhr.onreadystatechange = function() {
    if (xhr.readystate === 4 && (xhr.status === 200 || xhr.status === 304)) {
      switch(opts.datatype){
        case "json":
          var json = json.parse(xhr.responsetext);
          opts.success(json);
          break;
        case "xml":
          opts.success(xhr.responsexml);
          break;
        default:
          opts.success(xhr.responsetext);
          break;
      }
    }
  }
  xhr.onerror = function(err) {
    opts.error(err);
  }
}
/**
 * @param {url}
 * @param {setting}
 * @return {promise}
 */
fetch(url, setting) {
  //设置参数的初始值
  let opts={
    method: (setting.method || 'get').touppercase(), //请求方式
    headers : setting.headers || {}, // 请求头设置
    credentials : setting.credentials || true, // 设置cookie是否一起发送
    body: setting.body || {},
    mode : setting.mode || 'no-cors', // 可以设置 cors, no-cors, same-origin
    redirect : setting.redirect || 'follow', // follow, error, manual
    cache : setting.cache || 'default' // 设置 cache 模式 (default, reload, no-cache)
  }
  let datatype = setting.datatype || "json", // 解析方式 
    data = setting.data || "" // 参数
  // 参数格式化
  function params_format (obj) {
    var str = ''
    for (var i in obj) {
      str += `${i}=${obj[i]}&`
    }
    return str.split('').slice(0, -1).join('')
  }
  if (opts.method === 'get') {
    url = url + (data?`?${params_format(data)}`:'')
  }else{
    setting.body = data || {}
  }
  return new promise( (resolve, reject) => {
    fetch(url, opts).then( async res => {
      let data = datatype === 'text' ? await res.text() :
        datatype === 'blob' ? await res.blob() : await res.json() 
      resolve(data)
    }).catch( e => {
      reject(e)
    })
  })
}

7. dom

$ (selector){ 
  var type = selector.substring(0, 1);
  if (type === '#') {
    if (document.queryselecotor) return document.queryselector(selector)
      return document.getelementbyid(selector.substring(1))
  }else if (type === '.') {
    if (document.queryselecotorall) return document.queryselectorall(selector)
      return document.getelementsbyclassname(selector.substring(1))
  }else{
    return document['queryselectorall' ? 'queryselectorall':'getelementsbytagname'](selector)
  }
} 
/*检测类名*/
hasclass (ele, name) {
  return ele.classname.match(new regexp('(\\s|^)' + name + '(\\s|$)'));
}
/*添加类名*/
addclass (ele, name) {
  if (!this.hasclass(ele, name)) ele.classname += " " + name;
}
/*删除类名*/
removeclass (ele, name) {
  if (this.hasclass(ele, name)) {
    var reg = new regexp('(\\s|^)' + name + '(\\s|$)');
    ele.classname = ele.classname.replace(reg, '');
  }
}
/*替换类名*/
replaceclass (ele, newname, oldname) {
  this.removeclass(ele, oldname);
  this.addclass(ele, newname);
}
/*获取兄弟节点*/
siblings (ele) {
  console.log(ele.parentnode)
  var chid = ele.parentnode.children,elematch = []; 
  for(var i = 0, len = chid.length; i < len; i ++){ 
    if(chid[i] != ele){ 
      elematch.push(chid[i]); 
    } 
  } 
  return elematch;
}
/*获取行间样式属性*/
getbystyle (obj,name){
  if(obj.currentstyle){
    return obj.currentstyle[name];
  }else{
    return getcomputedstyle(obj,false)[name];
  }
}

8. storage 储存操作

class storagefn {
  constructor () {
    this.ls = window.localstorage;
    this.ss = window.sessionstorage;
  }
  /*-----------------cookie---------------------*/
  /*设置cookie*/
  setcookie (name, value, day) {
    var setting = arguments[0];
    if (object.prototype.tostring.call(setting).slice(8, -1) === 'object'){
      for (var i in setting) {
        var odate = new date();
        odate.setdate(odate.getdate() + day);
        document.cookie = i + '=' + setting[i] + ';expires=' + odate;
      }
    }else{
      var odate = new date();
      odate.setdate(odate.getdate() + day);
      document.cookie = name + '=' + value + ';expires=' + odate;
    }
  }
  /*获取cookie*/
  getcookie (name) {
    var arr = document.cookie.split('; ');
    for (var i = 0; i < arr.length; i++) {
      var arr2 = arr[i].split('=');
      if (arr2[0] == name) {
        return arr2[1];
      }
    }
    return '';
  }
  /*删除cookie*/
  removecookie (name) {
    this.setcookie(name, 1, -1);
  }
  /*-----------------localstorage---------------------*/
  /*设置localstorage*/
  setlocal(key, val) {
    var setting = arguments[0];
    if (object.prototype.tostring.call(setting).slice(8, -1) === 'object'){
      for(var i in setting){
        this.ls.setitem(i, json.stringify(setting[i]))
      }
    }else{
      this.ls.setitem(key, json.stringify(val))
    }
  }
  /*获取localstorage*/
  getlocal(key) {
    if (key) return json.parse(this.ls.getitem(key))
    return null;
  }
  /*移除localstorage*/
  removelocal(key) {
    this.ls.removeitem(key)
  }
  /*移除所有localstorage*/
  clearlocal() {
    this.ls.clear()
  }
  /*-----------------sessionstorage---------------------*/
  /*设置sessionstorage*/
  setsession(key, val) {
    var setting = arguments[0];
    if (object.prototype.tostring.call(setting).slice(8, -1) === 'object'){
      for(var i in setting){
        this.ss.setitem(i, json.stringify(setting[i]))
      }
    }else{
      this.ss.setitem(key, json.stringify(val))
    }
  }
  /*获取sessionstorage*/
  getsession(key) {
    if (key) return json.parse(this.ss.getitem(key))
    return null;
  }
  /*移除sessionstorage*/
  removesession(key) {
    this.ss.removeitem(key)
  }
  /*移除所有sessionstorage*/
  clearsession() {
    this.ss.clear()
  }
}

9. other 其它操作

/*获取网址参数*/
geturl(name){
  var reg = new regexp("(^|&)"+ name +"=([^&]*)(&|$)");
  var r = decodeuri(window.location.search).substr(1).match(reg);
  if(r!=null) return r[2]; return null;
}
/*获取全部url参数,并转换成json对象*/
geturlallparams (url) {
  var url = url ? url : window.location.href;
  var _pa = url.substring(url.indexof('?') + 1),
    _arrs = _pa.split('&'),
    _rs = {};
  for (var i = 0, _len = _arrs.length; i < _len; i++) {
    var pos = _arrs[i].indexof('=');
    if (pos == -1) {
      continue;
    }
    var name = _arrs[i].substring(0, pos),
      value = window.decodeuricomponent(_arrs[i].substring(pos + 1));
    _rs[name] = value;
  }
  return _rs;
}
/*删除url指定参数，返回url*/
delparamsurl(url, name){
  var baseurl = url.split('?')[0] + '?';
  var query = url.split('?')[1];
  if (query.indexof(name)>-1) {
    var obj = {}
    var arr = query.split("&");
    for (var i = 0; i < arr.length; i++) {
      arr[i] = arr[i].split("=");
      obj[arr[i][0]] = arr[i][1];
    };
    delete obj[name];
    var url = baseurl + json.stringify(obj).replace(/[\"\{\}]/g,"").replace(/\:/g,"=").replace(/\,/g,"&");
    return url
  }else{
    return url;
  }
}
/*获取十六进制随机颜色*/
getrandomcolor () {
  return '#' + (function(h) {
    return new array(7 - h.length).join("0") + h;
  })((math.random() * 0x1000000 << 0).tostring(16));
}
/*图片加载*/
imgloadall(arr,callback){
  var arrimg = []; 
  for (var i = 0; i < arr.length; i++) {
    var img = new image();
    img.src = arr[i];
    img.onload = function(){
      arrimg.push(this);
      if (arrimg.length == arr.length) {
        callback && callback();
      }
    }
  }
}
/*音频加载*/
loadaudio(src, callback) {
  var audio = new audio(src);
  audio.onloadedmetadata = callback;
  audio.src = src;
}
/*dom转字符串*/
domtostirng(htmldom){
  var div= document.createelement("div");
  div.appendchild(htmldom);
  return div.innerhtml
}
/*字符串转dom*/
stringtodom(htmlstring){
  var div= document.createelement("div");
  div.innerhtml=htmlstring;
  return div.children[0];
}
/**
 * 光标所在位置插入字符，并设置光标位置
 * @param {dom} 输入框
 * @param {val} 插入的值
 * @param {poslen} 光标位置处在 插入的值的哪个位置
 */
setcursorposition (dom,val,poslen) {
  var cursorposition = 0;
  if(dom.selectionstart){
    cursorposition = dom.selectionstart;
  }
  this.insertatcursor(dom,val);
  dom.focus();
  console.log(poslen)
  dom.setselectionrange(dom.value.length,cursorposition + (poslen || val.length));
}
/*光标所在位置插入字符*/
insertatcursor(dom, val) {
  if (document.selection){
    dom.focus();
    sel = document.selection.createrange();
    sel.text = val;
    sel.select();
  }else if (dom.selectionstart || dom.selectionstart == '0'){
    let startpos = dom.selectionstart;
    let endpos = dom.selectionend;
    let restoretop = dom.scrolltop;
    dom.value = dom.value.substring(0, startpos) + val + dom.value.substring(endpos, dom.value.length);
    if (restoretop > 0){
      dom.scrolltop = restoretop;
    }
    dom.focus();
    dom.selectionstart = startpos + val.length;
    dom.selectionend = startpos + val.length;
  } else {
    dom.value += val;
    dom.focus();
  }
}

css

1. pc-reset pc样式初始化

/* normalize.css */
html {
 line-height: 1.15;
 /* 1 */
 -ms-text-size-adjust: 100%;
 /* 2 */
 -webkit-text-size-adjust: 100%;
 /* 2 */
}
body {
 margin: 0;
}
article,
aside,
footer,
header,
nav,
section {
 display: block;
}
h1 {
 font-size: 2em;
 margin: 0.67em 0;
}
figcaption,
figure,
main {
 /* 1 */
 display: block;
}
figure {
 margin: 1em 40px;
}
hr {
 box-sizing: content-box;
 /* 1 */
 height: 0;
 /* 1 */
 overflow: visible;
 /* 2 */
}
pre {
 font-family: monospace, monospace;
 /* 1 */
 font-size: 1em;
 /* 2 */
}
a {
 background-color: transparent;
 /* 1 */
 -webkit-text-decoration-skip: objects;
 /* 2 */
}
abbr[title] {
 border-bottom: none;
 /* 1 */
 text-decoration: underline;
 /* 2 */
 text-decoration: underline dotted;
 /* 2 */
}
b,
strong {
 font-weight: inherit;
}
b,
strong {
 font-weight: bolder;
}
code,
kbd,
samp {
 font-family: monospace, monospace;
 /* 1 */
 font-size: 1em;
 /* 2 */
}
dfn {
 font-style: italic;
}
mark {
 background-color: #ff0;
 color: #000;
}
small {
 font-size: 80%;
}
sub,
sup {
 font-size: 75%;
 line-height: 0;
 position: relative;
 vertical-align: baseline;
}
sub {
 bottom: -0.25em;
}
sup {
 top: -0.5em;
}
audio,
video {
 display: inline-block;
}
audio:not([controls]) {
 display: none;
 height: 0;
}
img {
 border-style: none;
}
svg:not(:root) {
 overflow: hidden;
}
button,
input,
optgroup,
select,
textarea {
 font-family: sans-serif;
 /* 1 */
 font-size: 100%;
 /* 1 */
 line-height: 1.15;
 /* 1 */
 margin: 0;
 /* 2 */
}
button,
input {
 /* 1 */
 overflow: visible;
}
button,
select {
 /* 1 */
 text-transform: none;
}
button,
html [type="button"],
/* 1 */
[type="reset"],
[type="submit"] {
 -webkit-appearance: button;
 /* 2 */
}
button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
 border-style: none;
 padding: 0;
}
button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
 outline: 1px dotted buttontext;
}
fieldset {
 padding: 0.35em 0.75em 0.625em;
}
legend {
 box-sizing: border-box;
 /* 1 */
 color: inherit;
 /* 2 */
 display: table;
 /* 1 */
 max-width: 100%;
 /* 1 */
 padding: 0;
 /* 3 */
 white-space: normal;
 /* 1 */
}
progress {
 display: inline-block;
 /* 1 */
 vertical-align: baseline;
 /* 2 */
}
textarea {
 overflow: auto;
}
[type="checkbox"],
[type="radio"] {
 box-sizing: border-box;
 /* 1 */
 padding: 0;
 /* 2 */
}
[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
 height: auto;
}
[type="search"] {
 -webkit-appearance: textfield;
 /* 1 */
 outline-offset: -2px;
 /* 2 */
}
[type="search"]::-webkit-search-cancel-button,
[type="search"]::-webkit-search-decoration {
 -webkit-appearance: none;
}
 ::-webkit-file-upload-button {
 -webkit-appearance: button;
 /* 1 */
 font: inherit;
 /* 2 */
}
details,
/* 1 */
menu {
 display: block;
}
summary {
 display: list-item;
}
canvas {
 display: inline-block;
}
template {
 display: none;
}
[hidden] {
 display: none;
}
/* reset */
html,
body,
h1,
h2,
h3,
h4,
h5,
h6,
div,
dl,
dt,
dd,
ul,
ol,
li,
p,
blockquote,
pre,
hr,
figure,
table,
caption,
th,
td,
form,
fieldset,
legend,
input,
button,
textarea,
menu {
 margin: 0;
 padding: 0;
 box-sizing: border-box;
}

2. phone-reset

/* normalize.css */
html {
 line-height: 1.15;
 /* 1 */
 -ms-text-size-adjust: 100%;
 /* 2 */
 -webkit-text-size-adjust: 100%;
 /* 2 */
}
body {
 margin: 0;
}
article,
aside,
footer,
header,
nav,
section {
 display: block;
}
h1 {
 font-size: 2em;
 margin: 0.67em 0;
}
figcaption,
figure,
main {
 /* 1 */
 display: block;
}
figure {
 margin: 1em 40px;
}
hr {
 box-sizing: content-box;
 /* 1 */
 height: 0;
 /* 1 */
 overflow: visible;
 /* 2 */
}
pre {
 font-family: monospace, monospace;
 /* 1 */
 font-size: 1em;
 /* 2 */
}
a {
 background-color: transparent;
 /* 1 */
 -webkit-text-decoration-skip: objects;
 /* 2 */
}
abbr[title] {
 border-bottom: none;
 /* 1 */
 text-decoration: underline;
 /* 2 */
 text-decoration: underline dotted;
 /* 2 */
}
b,
strong {
 font-weight: inherit;
}
b,
strong {
 font-weight: bolder;
}
code,
kbd,
samp {
 font-family: monospace, monospace;
 /* 1 */
 font-size: 1em;
 /* 2 */
}
dfn {
 font-style: italic;
}
mark {
 background-color: #ff0;
 color: #000;
}
small {
 font-size: 80%;
}
sub,
sup {
 font-size: 75%;
 line-height: 0;
 position: relative;
 vertical-align: baseline;
}
sub {
 bottom: -0.25em;
}
sup {
 top: -0.5em;
}
audio,
video {
 display: inline-block;
}
audio:not([controls]) {
 display: none;
 height: 0;
}
img {
 border-style: none;
}
svg:not(:root) {
 overflow: hidden;
}
button,
input,
optgroup,
select,
textarea {
 font-family: sans-serif;
 /* 1 */
 font-size: 100%;
 /* 1 */
 line-height: 1.15;
 /* 1 */
 margin: 0;
 /* 2 */
}
button,
input {
 /* 1 */
 overflow: visible;
}
button,
select {
 /* 1 */
 text-transform: none;
}
button,
html [type="button"],
/* 1 */
[type="reset"],
[type="submit"] {
 -webkit-appearance: button;
 /* 2 */
}
button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
 border-style: none;
 padding: 0;
}
button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
 outline: 1px dotted buttontext;
}
fieldset {
 padding: 0.35em 0.75em 0.625em;
}
legend {
 box-sizing: border-box;
 /* 1 */
 color: inherit;
 /* 2 */
 display: table;
 /* 1 */
 max-width: 100%;
 /* 1 */
 padding: 0;
 /* 3 */
 white-space: normal;
 /* 1 */
}
progress {
 display: inline-block;
 /* 1 */
 vertical-align: baseline;
 /* 2 */
}
textarea {
 overflow: auto;
}
[type="checkbox"],
[type="radio"] {
 box-sizing: border-box;
 /* 1 */
 padding: 0;
 /* 2 */
}
[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
 height: auto;
}
[type="search"] {
 -webkit-appearance: textfield;
 /* 1 */
 outline-offset: -2px;
 /* 2 */
}
[type="search"]::-webkit-search-cancel-button,
[type="search"]::-webkit-search-decoration {
 -webkit-appearance: none;
}
 ::-webkit-file-upload-button {
 -webkit-appearance: button;
 /* 1 */
 font: inherit;
 /* 2 */
}
details,
/* 1 */
menu {
 display: block;
}
summary {
 display: list-item;
}
canvas {
 display: inline-block;
}
template {
 display: none;
}
[hidden] {
 display: none;
}
/* reset */
html,
body,
h1,
h2,
h3,
h4,
h5,
h6,
div,
dl,
dt,
dd,
ul,
ol,
li,
p,
blockquote,
pre,
hr,
figure,
table,
caption,
th,
td,
form,
fieldset,
legend,
input,
button,
textarea,
menu {
 margin: 0;
 padding: 0;
 box-sizing: border-box;
}
html,
body {
 /* 禁止选中文本 */
 -webkit-user-select: none;
 user-select: none;
 font: oswald, 'open sans', helvetica, arial, sans-serif
}
/* 禁止长按链接与图片弹出菜单 */
a,
img {
 -webkit-touch-callout: none;
}
/*ios android去除自带阴影的样式*/
a,
input {
 -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
input[type="text"] {
 -webkit-appearance: none;
}

3. 公共样式提取

/* 禁止选中文本 */
.usn{
  -webkit-user-select:none;
  -moz-user-select:none;
  -ms-user-select:none;
  -o-user-select:none;
  user-select:none;
}
/* 浮动 */
.fl { float: left; }
.fr { float: right; }
.cf { zoom: 1; }
.cf:after {
  content:".";
  display:block;
  clear:both;
  visibility:hidden;
  height:0;
  overflow:hidden;
}
/* 元素类型 */
.db { display: block; }
.dn { display: none; }
.di { display: inline }
.dib {display: inline-block;}
.transparent { opacity: 0 }
/*文字排版、颜色*/
.f12 { font-size:12px }
.f14 { font-size:14px }
.f16 { font-size:16px }
.f18 { font-size:18px }
.f20 { font-size:20px }
.fb { font-weight:bold }
.fn { font-weight:normal }
.t2 { text-indent:2em }
.red,a.red { color:#cc0031 }
.darkblue,a.darkblue { color:#039 }
.gray,a.gray { color:#878787 }
.lh150 { line-height:150% }
.lh180 { line-height:180% }
.lh200 { line-height:200% }
.unl { text-decoration:underline; }
.no_unl { text-decoration:none; }
.tl { text-align: left; }
.tc { text-align: center; }
.tr { text-align: right; }
.tj { text-align: justify; text-justify: inter-ideograph; }
.wn { /* 强制不换行 */
  word-wrap:normal;
  white-space:nowrap;
}
.wb { /* 强制换行 */
  white-space:normal;
  word-wrap:break-word;
  word-break:break-all;
}
.wp { /* 保持空白序列*/
  overflow:hidden;text-align:left;white-space:pre-wrap;word-wrap:break-word;word-break:break-all;
}
.wes { /* 多出部分用省略号表示 , 用于一行 */
  overflow:hidden;
  word-wrap:normal;
  white-space:nowrap;
  text-overflow:ellipsis;
}
.wes-2 { /* 适用于webkit内核和移动端 */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
} 
.wes-3 {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}
.wes-4 {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
  overflow: hidden;
}
/* 溢出样式 */
.ofh { overflow: hidden; }
.ofs {overflow: scroll; }
.ofa {overflow: auto; }
.ofv {overflow: visible; }
/* 定位方式 */
.ps {position: static; }
.pr {position: relative;zoom:1; }
.pa {position: absolute; }
.pf {position: fixed; }
/* 垂直对齐方式 */
.vt {vertical-align: top; }
.vm {vertical-align: middle; }
.vb {vertical-align: bottom; }
/* 鼠标样式 */
.csd {cursor: default; }
.csp {cursor: pointer; }
.csh {cursor: help; }
.csm {cursor: move; }
/* flex布局 */
.df-sb {
  display:flex;
  align-items: center;
  justify-content: space-between;
}
.df-sa {
  display:flex;
  align-items: center;
  justify-content: space-around;
}
/* 垂直居中 */
.df-c {
  display: flex;
  align-items: center;
  justify-content: center;
}
.tb-c {
  text-align:center;
  display:table-cell;
  vertical-align:middle;
}
.ts-c {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
}
.ts-mc {
  position: absolute;
  left: 0;right: 0;
  bottom: 0; top: 0;
  margin: auto;
}
/* 辅助 */
.mask-fixed-wrapper {
  width: 100%;
  height: 100%;
  position: fixed;
  left:0;top:0;
  background: rgba(0, 0, 0, 0.65);
  z-index: 999;
}
.bg-cover {
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}
.bg-cover-all {
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-position: center center;
}

总结

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