<html>
<head>
<title>wirelib</title>
</head>
<script>
//document.title = document.documentElement.clientWidth;
/*
* 1.onload 实例化对象
* 2.改造函数对象的属性及方法
* 3.使用了定时器，事件赋值函数，需注意闭包的使用
*/
function TabSwitch(id) {
var _this = this;
var oDiv = document.getElementById(id);
this.btns = oDiv.getElementsByTagName("input");
this.divs = oDiv.getElementsByTagName("div");
console.log(this)
for (var i=0; i<this.btns.length; i++) {
this.btns[i].index = i;
//事件使用对象的方法,需转用闭包功能
this.btns[i].onclick = function(){ _this.tab(this);};
}
}
TabSwitch.prototype.tab = function(that){
alert(that); //触发事件对象
for (var i=0; i<this.btns.length; i++) {
this.btns[i].className = "";
this.divs[i].style.display="none";
}
that.className = "active";
this.divs[that.index].style.display="block";
}
window.onload = function(){
var tab = new TabSwitch("oDiv");
}
</script>
<style>
.active{border: 1px solid red;}
</style>
<body style="margin:10px; border: 10px solid red">
<div id="oDiv" style="border: 1px solid red; position: absolute; width:120px;height: 120px;"></canvas>
<input type="button" value="a"/>
<input type="button" value="b"/>
<input type="button" value="c"/>
<div>aaaa</div>
<div style="display: none">bbbb</div>
<div style="display: none">cccc</div>
</body>
</html>
