![]() Here is an example: ĮCMAScript 6 introduces several helper methods that will make your JavaScript programming easier and more fun.įor example, the forEach array method runs the stipulated function once for every element of the array, saving you the hassle of using complicated walkarounds. However, let is a mutable variable that allows you to confine the declared variables within their block scope, leading to fewer variables hanging around. ![]() ![]() However, this keyword often makes variables to have function scope with the possibility of being hoisted to the top. Previously, the var keyword was used to define all types of variables, even if they are constants. ES6 introduced let and const keywords which allow you to declare reassignable variables and constants respectively.
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