js，JQuery遍历对象和数组 

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="jquery-1.9.0.min.js"></script> 
<script type="text/javascript">

//遍历对象
var param = {
        apple : 'zs',
        bana : {
            x : 'ls',
            y : 'w2'
        }
    }
for(var i in param){
    // console.log(i,":",param[i]);
 }
 Object.keys(param).forEach(function(key){
     //console.log(key,param[key]);
 });
 
 Object.keys(param).forEach(function(val,index){
     //console.log(index,val);
 });
 
 $.each(param,function(i,n){
    // console.log(i,n);
 });
 
//遍历数组
var arr = [1,2,3,4];
for(var i in arr){
    //console.log(i,arr[i]);
}
arr.forEach(function(val,index){
    //console.log(index,val);
});

$.each(arr,function(i,n){
    console.log(i,n);
})

</script>
</head>
<body>

</body>
</html>

 

posted @ 2018-06-08 11:37  aLa神灯  阅读(347)  评论(0)    收藏  举报