JavaScript中的变量变量 [英] Variable variables in JavaScript

问题描述

据我所知，此功能已经存在于PHP中.让我们看下面的php代码:

according to my knowledge, this feature already exists in PHP. lets look at the following php code:

$color = 'red';
$$color = 'dark';

功能说明:

有时候，拥有可变变量名很方便.即，可以动态设置和使用的变量名.变量变量获取变量的值，并将其视为变量的名称.在上面的示例中， red 可以用作变量的名称.此时，已经定义了两个变量并将其存储在PHP符号树中:$color，其内容为"red"和$red，内容为"dark".

description of the feature:

Sometimes it is convenient to be able to have variable variable names. That is, a variable name which can be set and used dynamically.A variable variable takes the value of a variable and treats that as the name of a variable. In the above example, red, can be used as the name of a variable.At this point two variables have been defined and stored in the PHP symbol tree: $color with contents "red" and $red with contents "dark".

这可以在Java脚本中完成吗?

can this be done in java Script?

推荐答案

var color = 'red';
window[color] = 'dark';
console.log(color, red);

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