代码: 遍历

<script type="text/javascript" src="http://cdn.bootcss.com/jquery/1.11.2/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
    $("#button").click(function(){
        //遍历
        $("ul li").each(function(){
            console.log($(this).text())
        });
        $("ul li").each(function(i,element){
            console.log($(this).text())
            console.log($(element).text());
            console.log(i);
        });
    });
});
</script>
<ul>
    <li>111</li>
    <li>222</li>
    <li>333</li>
    <li>444</li>
</ul>
<input type="button" id="button" value="遍历">

var obj={
    a:1,
    b:2,
    c:3
}
for(var item in obj){
    console.log(item);
}

<script type="text/javascript" src="http://cdn.bootcss.com/jquery/1.11.2/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
    $("#button").click(function(){
        //遍历表单文本框
        $("#form1 input[name]").each(function(){
            $(this).bind("blur",function(){
                testtest($(this));
            });//注意blur事件写法!
            
            function testtest(_this) {
                console.log(_this.val());
            }
        })
    });
});
</script>
<form method="post" action="" id="form1">
<input type="text" name="a1" value="a111"><br>
<input type="text" name="a2" value="a222"><br>
<input type="text" name="a3" value="a333"><br>
<input type="text" name="a4" value="a444"><br>
<input type="button" value="button" id="button">
</form>