debounce.js

/**
 * debounce
 *
 * @param {number} time time to wait next call
 * @param {(...any) => any} callback the callback function
 * @returns {(...any) => any}
 */
var debounce = function (time, callback) {
    var timer = null;
    var slice = Array.prototype.slice;
    var exectue = function (args) {
        if (args.length === 0) {
            callback();
        } else if (args.length === 1) {
            callback(args[0]);
        } else if (args.length === 2) {
            callback(args[0], args[1]);
        } else if (args.length === 3) {
            callback(args[0], args[1], args[2]);
        } else {
            callback.apply(null, args);
        }
    };

    return function () {
        var args = slice.call(arguments);

        if (timer !== null) {
            clearTimeout(timer);
        }

        timer = setTimeout(function () {
            timer = null;
            exectue(args);
        }, time);
    };
};

// TEST

var fn = debounce(300, function (code) {
    console.log(code);
});

fn(100);

setTimeout(function () {
    fn(200);
    setTimeout(function () {
        fn(400);
        setTimeout(function () {
            fn(500);
        }, 500);
    }, 400);
}, 200);

// OUTPUT:
// 200
// 400
// 500