Javascript add leading zeroes to date

Question

I\'ve created this script to calculate the date for 10 days in advance in the format of dd/mm/yyyy:

var MyDate = new Date();
var MyDateString = new Date();
M         


        

Answer 1

The following aims to extract configuration, hook into Date.protoype and apply configuration.

I've used an Array to store time chunks and when I push() this as a Date object, it returns me the length to iterate. When I'm done, I can use join on the return value.

This seems to work pretty fast: 0.016ms

// Date protoype
Date.prototype.formatTime = function (options) {
    var i = 0,
        time = [],
        len = time.push(this.getHours(), this.getMinutes(), this.getSeconds());

    for (; i < len; i += 1) {
        var tick = time[i];
        time[i] = tick < 10 ? options.pad + tick : tick;
    }

    return time.join(options.separator);
};

// Setup output
var cfg = {
    fieldClock: "#fieldClock",
    options: {
        pad: "0",
        separator: ":",
        tick: 1000
    }
};

// Define functionality
function startTime() {
    var clock = $(cfg.fieldClock),
        now = new Date().formatTime(cfg.options);

    clock.val(now);
    setTimeout(startTime, cfg.options.tick);
}

// Run once
startTime();

demo: http://jsfiddle.net/tive/U4MZ3/