How to add an method to a class in Javascript ES6
class, ecmascript-5, javascript, methods, prototype
Solution
this works fine, if you are checking this in google chrome console, then please check by expanding proto node. or alternatively try checking `console.log(X.y)` or `console.log(X.prototype.y)` or `console.log(x.y)` this must print that function
Problem
I need do add a method to a Javascript class using the new syntax. I tried this way: ``` class X{ constructor() { this.a = 'b' } x(){ } } X.prototype.y = function (){ console.log('y') } var x = new X() x.y() console.log(X) // print the the class but not the new method. ``` It just prints: ``` class X{ constructor() { this.a = 'b' } x(){} } ``` But I expected ``` class X{ constructor() { this.a = 'b' } x(){} y(){ console.log('y'); } } ``` How could I add a new method to a Javascript class?