<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JQuery初探</title>
</head>
<body>
<div id="box1" class="box">
<span>1112</span>
</div>
<div id="box2" class="box">
<span>1113</span>
</div>
<div id="box3" class="box">
<span>1113</span>
</div>
<script>
var Kodo = function(selector){
return new Kodo.prototype.init(selector);
}
Kodo.prototype = {
constructor : Kodo,
length : 0,
splice : [].splice,
selector : '',
ele : {},
className : '',
idName : '',
init : function(selector){
if(selector){
if(selector.substring(0,1) === '#')
this.ele = this.createrEleById(selector.substring(1,selector.length));
else if(selector.substring(0,1) === '.')
this.ele = this.createEleByClass(selector.substring(1,selector.length));
}
//console.log(this.ele);
},
createrEleById : function(idName){
this.idName = idName;
this.length ++;
return document.getElementById(idName);
},
createEleByClass : function(className){
var classObj = document.getElementsByClassName(className);
this.className = className;
this.length = classObj.length;
return classObj;
},
toTrim : function(str){
//去除字符串两端空格
return str.replace(/(^\s*)|(\s*$)/g, "");
},
hasClass : function(cls){
var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
for(var i = 0;i < this.length;i++){
if(this.ele[i].className.match(reg))
return true;
}
return false;
},
addClass : function(cls){
var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
for(var i = 0;i < this.length;i++){
if(!this.ele[i].className.match(reg))
//两类名中间需要使用空格进行隔开
this.ele[i].className += ' ' + cls;
}
return this;
},
removeClass : function(cls){
//两种可能，一种可能是删除最原始的className，一种可能是删除新加的className
var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
for(var i = 0;i < this.length;i ++){
if(this.ele[i].className.match(reg)){
this.ele[i].className = this.ele[i].className.replace(' ' + cls,'');
if(this.className.match(reg)){
this.length --;i --;
}
}
}
return this;
}
}
Kodo.prototype.init.prototype = Kodo.prototype;
Kodo.prototype.ajax = function(){
console.log('这里可以写ajax');
}
window.$ = Kodo;
console.log($('.box').hasClass('box'),$('.box').hasClass('box1'));
$('.box').addClass('box1').removeClass('box');
//目前存在的bug在于无法连续的removeClass,以后有时间再考虑这个问题
</script>
</body>
</html>
