understanding-javascript-function-prototype-bind

understanding-javascript-function-prototype-bind

https://www.smashingmagazine.com/2014/01/understanding-javascript-function-prototype-bind/

var foo = {
    x: 3
}

var bar = function(){
    console.log(this.x);
}

bar(); // undefined

var boundFunc = bar.bind(foo);

boundFunc(); // 3

bind something to as this