Javascript如何在一行上定义多个变量? [英] Javascript How to define multiple variables on a single line?

问题描述

在线阅读文档，我很困惑如何在一行上正确定义多个JavaScript变量.

Reading documentation online, I'm getting confused how to properly define multiple JavaScript variables on a single line.

如果我想压缩以下代码，那么在一行上定义多个javascript变量的正确JavaScript严格"方法是什么?

If I want to condense the following code, what's the proper JavaScript "strict" way to define multiple javascript variables on a single line?

var a = 0;
var b = 0;

是吗

var a = b = 0;

或

var a = var b = 0; 

等...

推荐答案

使用Javascript的es6或节点，您可以执行以下操作:

Using Javascript's es6 or node, you can do the following:

var [a,b,c,d] = [0,1,2,3]

如果您想轻松地在一行中打印多个变量，请执行以下操作:

And if you want to easily print multiple variables in a single line, just do this:

console.log(a, b, c, d)

0 1 2 3

0 1 2 3

这与@alex gray的答案类似，但是此示例使用Javascript而不是CoffeeScript.

This is similar to @alex gray 's answer here, but this example is in Javascript instead of CoffeeScript.

请注意，这使用了Javascript的数组解构赋值

Note that this uses Javascript's array destructuring assignment

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