JSFiddle - React, Tailwind, and code Playground

JavaScript

Array.prototype.reduce=function(f, value){
			    	          for(var i=0;i< this.length;i++){
			    		          value=f(this[i],value);
                              }
                              return value;
                        };

var add = function(a,b){
             return a+b;
          }

var data = [1,3,2,4,5,6,7,8,9];
var result = data.reduce(add,0);
alert(result);