JavaScript merge two arrays and remove repeated items _ javascript skills

This article mainly introduces how to merge two arrays in JavaScript and remove repeated items. it involves techniques related to merging and deduplication of arrays in javascript operations, for more information about how to use JavaScript to merge two arrays and remove repeated items, see the example in this article. Share it with you for your reference. The specific implementation method is as follows:

Array. prototype. unique = function () {var a = this. concat (); for (var I = 0; ifor (var j = I + 1; jif (a [I] = a [j]). splice (j, 1) ;}} return a ;}; // Demovar array1 = ["a", "B"]; var array2 = ["B ", "c"]; var array3 = array1.concat (array2 ). unique ();

Output result:
["A", "B", "c"]

I hope this article will help you design javascript programs.