each()方法:
$.each(数组/对象,function处理); //$对象 调用的
$(选择器).each(function处理); //jquery对象 调用的
<!DOCTYPE html> <html> <head> <title>php.cn</title> <meta charset="utf-8" /> <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script> <script> function f1(){ //① 遍历对象 //$.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>