I want to check if the two arrays are identical (not content wise, but in exact order).
For example:
array1 = [1,2,3,4,5]
array2 = [1,2,3,4,5]
array3 = [3,5,1,2,4]
Array 1 and 2 are identical but 3 is not.
Is there a good way to do this in JavaScript?
This question is related to
javascript
arrays
comparison
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;
}
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
Source: Stackoverflow.com