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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