如何为JavaScript对象分配多个值？ [英] How to assign multiple values to a JavaScript object?

问题描述

假设我有一个带键/值对的对象如下：

Say that I have an object with key/value pair as the following:

var someVar = {
    color: "white",
    font_size: "30px",
    font_weight: "normal"
...some more variables and functions
};

有没有办法对这些密钥进行多次分配，而不必像这样做：

Is there a way to do a multiple assignment to those keys instead of having to do something like this:

someVar.color = "blue";
someVar.font_size = "30px";
...

推荐答案

你可以循环另一个对象：

You could loop through another object:

var thingsToAdd = {
    color: "blue",
    font_size: "30px"
};
for (var x in thingsToAdd) someVar[x] = thingsToAdd[x];

或者，您可以使用 with （ 警告 ：这几乎只是一个糟糕的想法！请参阅链接。我只是出于教育目的发布此内容;您几乎从不使用在生产代码中使用！）：

Or, you could use with (WARNING: this is ALMOST CERTAINLY a bad idea! See the link. I am only posting this for educational purposes; you should almost never use with in production code!):

with (someVar) {
    color = "blue";
    font_size = "30px";
}

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