在JavaScript对象中使用For和 [英] Use of For each and found in javascript Objects

问题描述

我有一个如下所示的对象.
var attr = {node:1; value:"2"
}
我知道每个原型都可以用于数组吗?同样可以用于对象数组?如果是，是否有任何方法可以检查对象数组中是否存在值?

Hi,
I have an object as shown below.
var attr={node:1;value:"2"
}
I know for each prototype can be used for array? the same can used for object array? If so is there any way to check whether a value exist in the object array?

推荐答案

首先，语法有误.

var attr = {node:1 ; value:"2"}

使用，

我认为forEach仅适用于数组.

First there is a mistake in syntax.

var attr={node:1;value:"2"}

use ,

I think forEach is available only for Arrays.

{node:1,value:"2"}

是一个对象.要使其成为数组，只需用"[]"包装

is an object. To make it an array, just wrap it with "[]"

[{node:1,value:"2"}]

选中此选项，让我知道...下面是使用Firefox测试的有效示例.

Check this and let me know... below is a working example tested with Firefox.

var obj = [{name:"John",age:25}];
    obj.forEach(function(person){
      alert(person.name+" is "+person.age+" years old");
    });

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