Dima Polos

const bind = (fn, ctx) => (...args) => fn.call(ctx, ...args);
function a(a,b,c){ console.log(this, a, b, c) }
const someObj = {abc: 100}
const bindedA = bind(a, someObj);
bindedA(123, 456, 789); // -> { abc: 100 } 123 456 789

$('a[href^="#"]').on('click', function(event) {

    var target = $( $(this).attr('href') );

    if( target.length ) {
        event.preventDefault();
        $('html, body').animate({
            scrollTop: target.offset().top
        }, 500);
    }

});