JSFiddle - React, Tailwind, and code Playground

by darkajax

JavaScript

var arr = [1,2,3,4,5,6,7,8,9,1,2,3,4,66,77,88];  
var seen = {};
jQuery.each(arr,function(i,v) {
    var txt = v;
    if (seen[txt]) {
        arr.splice(i,1);
    } else {
        seen[txt] = true;
    }
});
alert(arr);