<head>
<title>柱狀圖</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href="css.css" type="text/css" rel="stylesheet" />
<script src="jquery-1.8.2.min.js" type="text/javascript"></script>
<script src="histogram.js" type="text/javascript"></script>
</head>
<body>
<div class="histogram-container" id="histogram-container"></div>
</body>
$(function(){
var dataArr={
"data":[
{"id":1,"name":"百度","per":"10"},
{"id":2,"name":"騰訊","per":"20"},
{"id":3,"name":"新浪","per":"10"},
{"id":4,"name":"網易","per":"44"},
{"id":5,"name":"搜狐","per":"50"},
{"id":5,"name":"小蝦虎魚","per":"69"},
{"id":5,"name":"人人網","per":"72"},
{"id":5,"name":"愛奇藝","per":"88"},
{"id":5,"name":"奇虎360","per":"92"},
{"id":5,"name":"阿里巴巴","per":"15"},
{"id":5,"name":"阿里巴巴","per":"10"}
]
};
new histogram().init(dataArr.data);
});
function histogram(){
var controls={};
var bgColor=new Array("#666666","#21AA7C","#2277BB","#dc7644","#BBAA22","#AA22AA","#338800","#1099EE","#ffcc33","#ED3810");
this.init=function(data,y){
setControls();
buildHtml(data,y);
}
function setControls(){
controls.histogramContainer=$("#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<len;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軸部分
if(y=="%"){
yStr+='<li>100%</li><li>80%</li><li>60%</li><li>40%</li><li>20%</li><li>0%</li>';
}else{
var avg=maxTotal/5;
for(i=5;i>=0;i--){
yStr+='<li>'+avg*i+'</li>';
}
}
//柱狀條部分
for(var i=0;i<len;i++){
var per=Math.floor(parseInt(data[i]['per'])/maxTotal*100);
var n=Math.floor(parseInt(per)/10);
contentStr+='<li style="width:'+widthPer+'%">';
contentStr+='<span class="histogram-box"><a style="height:'+per+'%'+';background:'+bgColor[n]+';" title="'+data[i]['per']+'"></a></span><span class="histogram-name">'+data[i]['name']+'</span>';
contentStr+='</li>';
bgLineStr+='<li style="width:'+widthPer+'%;"><div></div></li>';
}
//背景方格部分
for(var j=0;j<5;j++){
bgLineAll+='<ul>'+bgLineStr+'</ul>';
}
bgLineAll='<div class="histogram-bg-line">'+bgLineAll+'</div>';
contentStr='<div class="histogram-content"><ul>'+contentStr+'</ul></div>';
yStr='<div class="histogram-y"><ul>'+yStr+'</ul></div>';
controls.histogramContainer.html(bgLineAll+contentStr+yStr);
controls.histogramContainer.css("height",controls.histogramContainer.height()+"px");//主要是解決IE6中的問題
}
}
Array.prototype.max = function(){//最大值
return Math.max.apply({},this)
}
