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javascript - 创建零填充JavaScript数组的最有效方法?(Most efficient way to create a zero filled JavaScript array?)

在JavaScript中创建任意长度的零填充数组的最有效方法是什么?

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ES6 introduces Array.prototype.fill .

(ES6引入了Array.prototype.fill 。)

It can be used like this:

(可以这样使用:)

new Array(len).fill(0);

Not sure if it's fast, but I like it because it's short and self-describing.

(不知道它是否很快,但是我喜欢它,因为它简短而自描述。)

It's still not in IE ( check compatibility ), but there's a polyfill available .

(它仍然不在IE中( 检查兼容性 ),但是有一个polyfill可用 。)


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