Array Matching in Javscript
Array are objects in JavaScript. You can look at like this
To make it clearer; only the primitive values can be compared for equality - i.e. boolean, string, number. The special values null and undefined also act this way.
var arr1=[1,2,3]; console.log(typeof arr1); //"object"In javascript, comparing objects (incl. arrays) against one and other they are only compared by reference - i.e. arr1 == arr2 will only be true if they are the same array. Two separate arrays/objects that look the same are not compared by value.
To make it clearer; only the primitive values can be compared for equality - i.e. boolean, string, number. The special values null and undefined also act this way.
var arr1 = [1]; var arr2 = [1]; var arr3 = arr1; var val1 = 1; arr1 == arr2 // false arr1 == arr3 // true arr1[0] == val1; // trueFor primitives values array matching, you can use the trick
JSON.stringify(arr1) === JSON.stringify(arr2)