本文介绍了是否可以将动态命名的属性添加到 JavaScript 对象?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

In JavaScript, I've created an object like so:

var data = {
    'PropertyA': 1,
    'PropertyB': 2,
    'PropertyC': 3
};

Is it possible to add further properties to this object after its initial creation if the properties name is not determined until run time? i.e.

var propName = 'Property' + someUserInput
//imagine someUserInput was 'Z', how can I now add a 'PropertyZ' property to
//my object?
解决方案

Yes.

var data = {
    'PropertyA': 1,
    'PropertyB': 2,
    'PropertyC': 3
};

data["PropertyD"] = 4;

// dialog box with 4 in it
alert(data.PropertyD);
alert(data["PropertyD"]);

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07-28 00:46