JavaScript 数组推送键值

问题描述

好的，我在这里有点不对劲，我已经浪费了一个小时，所以希望你们中的一个能帮助我.

Ok, I'm going a little wrong here and I've already wasted an hour with this so hopefully one of you guys can help me.

var a = ['left','top'],
    x = [];

for(i=0;i<a.length;i++) {
    x.push({
        a[i] : 0
    });
}

如何将值推送到 var a 数组中的每个键?

How do I go about pushing a value to each of the keys inside the var a array?

你可以看到我失败的尝试，但希望这能让你深入了解我正在努力实现的目标.

You can see my failed attempted but hopefully that will give you an insight into what I'm trying to achieve.

推荐答案

必须使用括号表示法:

var obj = {};
obj[a[i]] = 0;
x.push(obj);

结果将是:

x = [{left: 0}, {top: 0}];

也许您只需要一个具有两个属性的对象，而不是一组对象:

Maybe instead of an array of objects, you just want one object with two properties:

var x = {};

和

x[a[i]] = 0;

这将导致 x = {left: 0, top: 0}.

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