我想检查两个数组是否相同 (不是内容明智,而是按照确切的顺序)。
例如:
array1 = [1,2,3,4,5] array2 = [1,2,3,4,5] array3 = [3,5,1,2,4]
数组1和2是相同的,但3不是。
有没有用 JavaScript 实现这一点的好方法?
You could compare String representations so:
array1.toString() == array2.toString() array1.toString() !== array3.toString()
but that would also make
array4 = ['1',2,3,4,5]
equal to array1 if that matters to you
So, what's wrong with checking each element iteratively?
function arraysEqual(arr1, arr2) { if(arr1.length !== arr2.length) return false; for(var i = arr1.length; i--;) { if(arr1[i] !== arr2[i]) return false; } return true; }