WebApp开发-Zepto

zepto.js自己去官网下载哈。

dom操作

$(document).ready(function(){
    var $cr = $("<div class='cr'>插入的div</div>");
    // 插入操作
    $("#a").append($cr);
    $cr.appendto($("#a"));
    $("#a").prepend($cr);
    $cr.prependto($("#a"));
    $("#a").after($cr);
    $cr.insertafter($("#a"));
    $("#a").before($cr);
    $cr.insertbefore($("#a"));

    // 删除 remove\empty
    $("ul li").remove();
    $("ul li").empty();

    // 复制节点
    $("ul li").click(function(){
        $(this).clone().appendto("ul");
    });

    // 替换节点  replacewith
    $("p").replacewith("<span>是的，哈哈</span>");

    // 包裹节点   wrap  wrapall
    $("p").wrap("<div></div>");
    $("p").wrapall("<div></div>");
});

属性与样式操作

$(document).ready(function(){
    // 属性操作  attr("title")  attr("name","att")  attr({"name":"att" , "class":"test"})    removeattr("title name")
    console.log($("div").attr("title"));
    $("div").attr("name","att");
    $("div").attr({"name":"att" , "class":"test"})
    $("div").removeattr("title name");

    // 添加样式操作   addclass
    $("div").addclass("red").addclass("fs");
    $("div").addclass("red fs");
    
    // 删除class类   removeclass
    $("div").removeclass();

    // 切换样式  toggle   toggleclass
    $("button").click(function(){
        $("div").toggle();   // show和hide的切换
        $("div").toggleclass("red");   // addclass("red")和removeclass("red");
    });    

    // 判断是否含有某个样式  hasclass
    console.log($("div").hasclass("red fs"))
});

遍历节点

$(document).ready(function(){
    // next是取得紧邻的后面的同辈元素
    console.log($("#one h3").next());

    // prev获取紧邻的前面的同辈元素
    console.log($("#one a").prev());

    // siblings获取前后的所有同辈元素
    console.log($("#one p").siblings());

    // parent与parents直系亲属
    console.log($("b").parent());
    console.log($("b").parents());
});

css-dom操作

$(document).ready(function(){
    $(".one").css("color", "red").css("fontsize", "36px");
    $(".one").css({
        color:"red",
        fontsize:"36px"
    });
    $(".one").width(500);
    $(".one").height(500);
});

ready与onload的区别

    // html文件 、 css文件 、 js文件 、 图片文件等     
    $(document).ready(function(){
        // dom加载完毕，图片并未完全加载，调用时机比较快
    });
    window.onload = function(){
        // 全部文件加载完毕，调用时机比较久
    }

事件开头简写

    $(document).ready(function(){

    })
    $(function(){

    })
    $().ready(function(){

    })

事件绑定

    $(".one").bind("click", function(e){
        console.log("one被点击了！！！")
    })

    $(".one").click(function(e){
        console.log("我是简写方式");
    })

    $(".one").on("click", function(e){
        console.log("我是on事件");
    });
---------------------------------
    // on 
    $("ul").on('click', 'li', function(e){

    })
    // off 
    $("li").off();

zepto不支持事件捕获

事件其他用法

    // 自定义事件
    $("div").bind("muke", function(){
        console.log("触发自定义事件");
    });
    $("div").trigger("muke");

    // 命名空间
    $("div").bind("click", function(){
        console.log("我是普通的click事件");
    })
    $("div").bind("click.muke", function(){
        console.log("我是click.muke的事件");
    })

    $("div").unbind(".muke");
    
    // 绑定多个事件
    $("div").bind("click", function(){
        console.log(111)
    }).bind("touchstart", function(){
        console.log(222)
    })

动画

    $('button').on('click' , function(){
        $('div').toggle('slow');   //切换元素的显示与隐藏
        $('div').hide(3000);
        $('div').show('slow');
        $('div').fadein('slow');
        $('div').fadeout('slow');
        $('div, button').fadetoggle('slow');
        $("div").fadeto(3000 , 1)
    })

animate() 动画函数

    $("div").animate({left:"300px", height:"300px"}, 3000, function(){
        alert("动画执行完毕");
    })

ajax

    function ajax(){
        var xmlhttpreq = null;
        if(window.activexobject){
            // 兼容ie5、ie6
            xmlhttpreq = new activexobject("microsoft.xmlhttp");
        }else{
            xmlhttpreq = new xmlhttprequest();
        }

        xmlhttpreq.open("get", "test.php", true);
        xmlhttpreq.onreadystatechange = requestcallback;

        function requestcallback(){
            if(xmlhttpreq.readystate == 4){
                if(xmlhttpreq.status == 200){
                    console.log("获取数据："+xmlhttpreq.responsetext);
                }
            }
        }
        xmlhttpreq.send(null);
    }

ajax请求

    // get
    $.get('urlxxx',function(response){
      $(document.body).append(response)
    });

    // post
    $.post('urlxxx', { sample: 'payload' }, function(response){
         
    });
    
    // ajax
    $.ajax({
      type: 'get',
      url: 'urlxxx',
      data: { name: 'zepto.js' },
      datatype: 'json',
      success: function(data){
        this.append(data.project.html)
      },
      error: function(xhr, type){
        alert('ajax error!')
      }
    })

touch模块
先引入touch.js

  <script type="text/javascript" src="../../lib/touch.js"></script>

touch.js

;(function($){
  var touch = {},
    touchtimeout, taptimeout, swipetimeout, longtaptimeout,
    longtapdelay = 750,
    gesture

  function swipedirection(x1, x2, y1, y2) {
    return math.abs(x1 - x2) >=
      math.abs(y1 - y2) ? (x1 - x2 > 0 ? 'left' : 'right') : (y1 - y2 > 0 ? 'up' : 'down')
  }

  function longtap() {
    longtaptimeout = null
    if (touch.last) {
      touch.el.trigger('longtap')
      touch = {}
    }
  }

  function cancellongtap() {
    if (longtaptimeout) cleartimeout(longtaptimeout)
    longtaptimeout = null
  }

  function cancelall() {
    if (touchtimeout) cleartimeout(touchtimeout)
    if (taptimeout) cleartimeout(taptimeout)
    if (swipetimeout) cleartimeout(swipetimeout)
    if (longtaptimeout) cleartimeout(longtaptimeout)
    touchtimeout = taptimeout = swipetimeout = longtaptimeout = null
    touch = {}
  }

  function isprimarytouch(event){
    return (event.pointertype == 'touch' ||
      event.pointertype == event.mspointer_type_touch)
      && event.isprimary
  }

  function ispointereventtype(e, type){
    return (e.type == 'pointer'+type ||
      e.type.tolowercase() == 'mspointer'+type)
  }

  $(document).ready(function(){
    var now, delta, deltax = 0, deltay = 0, firsttouch, _ispointertype

    if ('msgesture' in window) {
      gesture = new msgesture()
      gesture.target = document.body
    }

    $(document)
      .bind('msgestureend', function(e){
        var swipedirectionfromvelocity =
          e.velocityx > 1 ? 'right' : e.velocityx < -1 ? 'left' : e.velocityy > 1 ? 'down' : e.velocityy < -1 ? 'up' : null
        if (swipedirectionfromvelocity) {
          touch.el.trigger('swipe')
          touch.el.trigger('swipe'+ swipedirectionfromvelocity)
        }
      })
      .on('touchstart mspointerdown pointerdown', function(e){
        if((_ispointertype = ispointereventtype(e, 'down')) &&
          !isprimarytouch(e)) return
        firsttouch = _ispointertype ? e : e.touches[0]
        if (e.touches && e.touches.length === 1 && touch.x2) {
          // clear out touch movement data if we have it sticking around
          // this can occur if touchcancel doesn't fire due to preventdefault, etc.
          touch.x2 = undefined
          touch.y2 = undefined
        }
        now = date.now()
        delta = now - (touch.last || now)
        touch.el = $('tagname' in firsttouch.target ?
          firsttouch.target : firsttouch.target.parentnode)
        touchtimeout && cleartimeout(touchtimeout)
        touch.x1 = firsttouch.pagex
        touch.y1 = firsttouch.pagey
        if (delta > 0 && delta <= 250) touch.isdoubletap = true
        touch.last = now
        longtaptimeout = settimeout(longtap, longtapdelay)
        // adds the current touch contact for ie gesture recognition
        if (gesture && _ispointertype) gesture.addpointer(e.pointerid)
      })
      .on('touchmove mspointermove pointermove', function(e){
        if((_ispointertype = ispointereventtype(e, 'move')) &&
          !isprimarytouch(e)) return
        firsttouch = _ispointertype ? e : e.touches[0]
        cancellongtap()
        touch.x2 = firsttouch.pagex
        touch.y2 = firsttouch.pagey

        deltax += math.abs(touch.x1 - touch.x2)
        deltay += math.abs(touch.y1 - touch.y2)
      })
      .on('touchend mspointerup pointerup', function(e){
        if((_ispointertype = ispointereventtype(e, 'up')) &&
          !isprimarytouch(e)) return
        cancellongtap()

        // swipe
        if ((touch.x2 && math.abs(touch.x1 - touch.x2) > 30) ||
            (touch.y2 && math.abs(touch.y1 - touch.y2) > 30))

          swipetimeout = settimeout(function() {
            if (touch.el){
              touch.el.trigger('swipe')
              touch.el.trigger('swipe' + (swipedirection(touch.x1, touch.x2, touch.y1, touch.y2)))
            }
            touch = {}
          }, 0)

        // normal tap
        else if ('last' in touch)
          // don't fire tap when delta position changed by more than 30 pixels,
          // for instance when moving to a point and back to origin
          if (deltax < 30 && deltay < 30) {
            // delay by one tick so we can cancel the 'tap' event if 'scroll' fires
            // ('tap' fires before 'scroll')
            taptimeout = settimeout(function() {

              // trigger universal 'tap' with the option to canceltouch()
              // (canceltouch cancels processing of single vs double taps for faster 'tap' response)
              var event = $.event('tap')
              event.canceltouch = cancelall
              // [by paper] fix -> "typeerror: 'undefined' is not an object (evaluating 'touch.el.trigger'), when double tap
              if (touch.el) touch.el.trigger(event)

              // trigger double tap immediately
              if (touch.isdoubletap) {
                if (touch.el) touch.el.trigger('doubletap')
                touch = {}
              }

              // trigger single tap after 250ms of inactivity
              else {
                touchtimeout = settimeout(function(){
                  touchtimeout = null
                  if (touch.el) touch.el.trigger('singletap')
                  touch = {}
                }, 250)
              }
            }, 0)
          } else {
            touch = {}
          }
          deltax = deltay = 0

      })
      // when the browser window loses focus,
      // for example when a modal dialog is shown,
      // cancel all ongoing events
      .on('touchcancel mspointercancel pointercancel', cancelall)

    // scrolling the window indicates intention of the user
    // to scroll, not tap or swipe, so cancel all ongoing events
    $(window).on('scroll', cancelall)
  })

  ;['swipe', 'swipeleft', 'swiperight', 'swipeup', 'swipedown',
    'doubletap', 'tap', 'singletap', 'longtap'].foreach(function(eventname){
    $.fn[eventname] = function(callback){ return this.on(eventname, callback) }
  })
})(zepto)

使用时：

  <script>
  $(document).ready(function(){
    $('#touch_test').bind('touchmove', function(e) { e.preventdefault() })
    
    listen_to('#touch_test')
    
    function listen_to(el) {
      $(el).tap(function(){
        console.log(' | tap!')
      })
      .doubletap(function(){
        console.log(' | double tap!')
      })
      .swipe(function(){
        console.log(' | swipe!')
      })
      .swipeleft(function(){
        console.log(' | swipe left!')
      })
      .swiperight(function(){
        console.log(' | swipe right!')
      })
      .swipeup(function(){
        console.log(' | swipe up!')
      })
      .swipedown(function(){
        console.log(' | swipe down!')
      })
      .longtap(function(){
        console.log(' | long tap!')
      })
      .singletap(function(){
        console.log(' | single tap!')
      })
    }
  }); 
  </script>

插件的写法
先编写自定义插件js文件
zepto.color.js

;(function($){
    //一个插件的写法
    $.fn.color = function(option){
        var options = $.extend({
            col: "blue",
            fz : "20px"
        }, option);

        this.css("color", options.col);
        this.css("fontsize", options.fz);
        return this;
    }
})(zepto);

//多组插件写法
/*
;(function($){
    
    $.extend($.fn, {
        color: function(option){
            var options = $.extend({
                col: "blue",
                fz : "20px"
            }, option);

            this.css("color", options.col);
            this.css("fontsize", options.fz);

            return this;
        },

        background: function(option){
            var options = $.extend({
                bg: "blue"
            }, option);

            this.css("background", options.bg);

            return this;
        }
    })

})(zepto);
*/

使用时：

    <script type="text/javascript" src="../../lib/zepto.color.js"></script>
    <script type="text/javascript">
        $("div").color({
            col : "red"
        }).addclass("helloworld");
    </script>