javascript - 如何在JavaScript中比较数组？(How to compare arrays in JavaScript?)

Question

I'd like to compare two arrays... ideally, efficiently.

(我想比较两个数组...理想地，有效地比较。)

Nothing fancy, just true if they are identical, and false if not.

(没有幻想，如果相同则为true ，否则为false 。)

Not surprisingly, the comparison operator doesn't seem to work.

(毫不奇怪，比较运算符似乎不起作用。)

var a1 = [1,2,3];
var a2 = [1,2,3];
console.log(a1==a2);    // Returns false
console.log(JSON.stringify(a1)==JSON.stringify(a2));    // Returns true

JSON encoding each array does, but is there a faster or "better" way to simply compare arrays without having to iterate through each value?

(每个数组都可以使用JSON编码，但是有没有一种更快或更“更好”的方法来简单地比较数组而不必遍历每个值？)

  ask by Julian H. Lam translate from so