js中遍历数组和遍历对象
2019-09-30 本文已影响0人
itming
js中遍历数组和遍历对象都可以用for:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>js中遍历对象和数组</title>
</head>
<body>
<script>
//遍历对象
var a={
name:'zain',
age:26,
height:170,
weight:120,
job:'web前端工程师'
};
for(var i in a){
console.log(i,a[i]);
}
console.log('--------------------------------------------');
//遍历数组
var arr=['zain','jack','jhon'];
for(var i in arr){
console.log(i,arr[i]);
}
</script>
</body>
</html>
控制台输出的是:
name zain
age 26
height 170
weight 120
job web前端工程师
0 zain
1 jack
2 jhon
