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jQuery制作简单柱状图实例_jquery

程序员文章站 2022-05-15 11:18:38
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本文实例讲述了jQuery制作简单柱状图的方法。分享给大家供大家参考。具体实现方法如下:

Html部分:

复制代码 代码如下:

柱状图







CSS部分:

复制代码 代码如下:
/*以下为柱状图样式*/
.histogram-container{position:relative;margin-left:60px;margin-top:10px;margin-bottom:25px;}
.histogram-bg-line{border:#999 solid;border-width:0 0px 1px 1px;border-right-color:#eee;overflow:hidden;width:99%;}
.histogram-bg-line ul{overflow:hidden;border:#eee solid;border-width:1px 0 0 0;clear:both;}
.histogram-bg-line li{float:left;overflow:hidden;background:#fff;}
.histogram-bg-line li div{border-right:1px #eee solid;}
.histogram-content{position:absolute;left:0px;top:0;width:99%;height:100%;}
.histogram-content ul{height:100%;}
.histogram-content li{float:left;height:100%;text-align:center;position:relative;}
.histogram-box{position:relative;display:inline-block;height:100%;width:20px;}
.histogram-content li a{position:absolute;bottom:0;right:0;display:block;width:20px;font-size:0;line-height:0;}
.histogram-content li .histogram-name{position:absolute;bottom:-20px;left:0px;white-space:nowrap;display:inline-block;width:100%;font-size:12px;overflow:hidden;}
.histogram-y{position:absolute;left:-60px;top:-10px;font:12px/1.8 verdana,arial;}
.histogram-y li{text-align:right;width:55px;padding-right:5px;color:#333;}
.histogram-bg-line li div,.histogram-y li{height:30px;/*控制单元格的高度及百分比的高度,使百分数与线条对其*/}

Js部分:

复制代码 代码如下:

$(function(){
var dataArr={
"data":[
{"id":1,"name":"百度","per":"10"},
{"id":2,"name":"腾讯","per":"20"},
{"id":3,"name":"新浪","per":"10"},
{"id":4,"name":"网易","per":"44"},
{"id":5,"name":"搜狐","per":"50"},
{"id":5,"name":"小虾虎鱼","per":"69"},
{"id":5,"name":"人人网","per":"72"},
{"id":5,"name":"爱奇艺","per":"88"},
{"id":5,"name":"奇虎360","per":"92"},
{"id":5,"name":"阿里巴巴","per":"15"},
{"id":5,"name":"阿里巴巴","per":"10"}
]
};
new histogram().init(dataArr.data);
});

function histogram(){
var controls={};
var bgColor=new Array("#666666","#21AA7C","#2277BB","#dc7644","#BBAA22","#AA22AA","#338800","#1099EE","#ffcc33","#ED3810");
this.init=function(data,y){
setControls();
buildHtml(data,y);
}
function setControls(){
controls.histogramContainer=$("#histogram-container");
controls.histogramBgLineUL=controls.histogramContainer.children("div.histogram-bg-line");
controls.histogramContentUL=controls.histogramContainer.children("div.histogram-content");
controls.histogramY=controls.histogramContainer.children("div.histogram-y");
}
function buildHtml(data,y){
var len=data.length,perArr=new Array(),maxNum,maxTotal,yStr='';
var contentStr='',bgLineStr='',bgLineAll='';
var widthPer=Math.floor(100/len);
minWidth=len*21+60;
controls.histogramContainer.css("min-width",minWidth+"px");

for(var a=0;a perArr[a]=parseInt(data[a]['per']);
}
maxNum=String(perArr.max());
if(maxNum.length>2){
var x=parseInt(maxNum.substr(maxNum.length-2,1))+1;
maxTotal=Math.floor(parseInt(maxNum/100))*100+x*10;
}else{
maxTotal=Math.floor(parseInt(maxNum/10))*10+10;
}

//y轴部分
if(y=="%"){
yStr+='
  • 100%
  • 80%
  • 60%
  • 40%
  • 20%
  • 0%
  • ';
    }else{
    var avg=maxTotal/5;
    for(i=5;i>=0;i--){
    yStr+='
  • '+avg*i+'
  • ';
    }
    }

    //柱状条部分
    for(var i=0;i var per=Math.floor(parseInt(data[i]['per'])/maxTotal*100);
    var n=Math.floor(parseInt(per)/10);
    contentStr+='
  • ';
    contentStr+=''+data[i]['name']+'';
    contentStr+='
  • ';
    bgLineStr+='
  • ';
    }

    //背景方格部分
    for(var j=0;j bgLineAll+='
      '+bgLineStr+'
    ';
    }
    bgLineAll='
    '+bgLineAll+'
    ';
    contentStr='
      '+contentStr+'
    ';
    yStr='
      '+yStr+'
    ';
    controls.histogramContainer.html(bgLineAll+contentStr+yStr);
    controls.histogramContainer.css("height",controls.histogramContainer.height()+"px");//主要是解决IE6中的问题
    }
    }
    Array.prototype.max = function(){//最大值
    return Math.max.apply({},this)
    }
  • 希望本文所述对大家的jQuery程序设计有所帮助。