arrow function

arrow functions example

by karthick6891

JavaScript

class Prefixer {
    constructor(prefix) {
        this.prefix = prefix;
    }
    prefixArray(arr) {
        return arr.map((x) => this.prefix + x); // (A)
    }
}

var pref = new Prefixer('x');
var pref1 = new Prefixer('y');

console.log(pref.prefixArray([1,2,3]))
console.log(pref1.prefixArray([1,2,3]))