JSFiddle - React, Tailwind, and code Playground

by Fernando Santos

JavaScript

alert(String.concat); // undefined
        
        // if someone has added it before
        String.concat = function(text1, text2) {
		   return text1 + text2;
		}

         var str3 = String.concat( "hlw","Stackover" );

         alert("Concatenated String :" + str3); //outputs:hlwstackoverflow