jQuery traversal method

each() method:

$.each(array/object, function processing); //$Object The

$(selector) called. each(function processing); //jquery object called

<!DOCTYPE html>
<html>
    <head>
        <title>php.cn</title>
        <meta charset="utf-8" />
        <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
        <script>
        function f1(){
        //① 遍历对象
        //$.each(对象,function(k对象属性变量,v对象属性值变量){});
        var cat = {name:'kitty',age:5,climb:function(){console.log('在爬树');}};

        jQuery.each(cat,function(k,v){
            console.log(k+'---'+v);
        });

        //② 遍历数组
        //$.each(数组,function(k元素下标变量,v元素值变量){});
        var color = ['red','blue','green'];
        jQuery.each(color,function(m,n){
            console.log(m+'---'+n);
        });
}
        window.onload = function(){
            //③ 遍历"jquery对象"
            //$('li').each(function(w dom对象下标索引值,f代表具体的每个dom对象){});
            $('li').each(function(w,f){
                //this代表遍历出来的每个“dom对象”
                //this ----> f
                //this ----> li对象(dom对象)
                console.log(w+"---"+f+"---"+this);
                f.style.color = "blue";
            });
        }
      
        </script>
        <style type="text/css">
        div {width:300px;height:200px; background-color:pink;}
        </style>
    </head>
    <body>
        <h2>each遍历方法</h2>
        <div id="apple"></div>
        <ul>
            <li>北京</li>
            <li>上海</li>
            <li>深圳</li>
        </ul>
        <input type="button" value="触发1" onclick="f1()" />
    </body>
</html>

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<!DOCTYPE html>
<html>
 <head>
 <title>php.cn</title>
 <meta charset="utf-8" />
 <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
 <script>
 function f1(){
 //① 遍历对象
 //$.each(对象,function(k对象属性变量,v对象属性值变量){});
 var cat = {name:'kitty',age:5,climb:function(){console.log('在爬树');}};
 jQuery.each(cat,function(k,v){
 console.log(k+'---'+v);
 });
 //② 遍历数组
 //$.each(数组,function(k元素下标变量,v元素值变量){});
 var color = ['red','blue','green'];
 jQuery.each(color,function(m,n){
 console.log(m+'---'+n);
 });
}
 window.onload = function(){
 //③ 遍历"jquery对象"
 //$('li').each(function(w dom对象下标索引值,f代表具体的每个dom对象){});
 $('li').each(function(w,f){
 //this代表遍历出来的每个“dom对象”
 //this ----> f
 //this ----> li对象(dom对象)
 console.log(w+"---"+f+"---"+this);
 f.style.color = "blue";
 });
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