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Narwhal is a server-side JavaScript standard library conforming to the ServerJS standard. It is designed to work with multiple JavaScript interpreters, and to be easy to add support for new interpreters. Wherever possible, it is implemented in pure JavaScript to maximize reuse of code between platforms.

You have probably seen these forms of advertisings where you can peel a corner of a website and see a message underneath. It seems most are flash driven, but I

when you're on a page in which you want to play around with jQuery in the console, just click the bookmarklet.

Try to answer what will be alerted in each case without running them in the console.

JavaScript is a language we love despite it giving us so much to hate. This is a collection of those very special irregularities, inconstancies and just pain unintuitive moments for the language of the web.

Check-boxes are useful for allowing the user to select multiple options when filling a HTML web form.

No images. No libraries*. Works even in IE6. // Color Picker by Raphaël - raphaeljs.com var icon = Raphael("picker", 23, 23).colorPickerIcon(11, 11, 10); icon.attr({cursor: "pointer"}).node.onclick = function () {    document.getElementById("benefits").style.visibility = "visible";    var out = document.getElementById("output");    out.style.visibility = "visible";                   // this is where colorpicker created    var cp = Raphael.colorpicker(document.body.offsetWidth / 2 - 150, 250, 300, "#eee", document.getElementById("picker2"));                   out.onkeyup = function () {        cp.color(this.value);    };    // assigning onchange event handler    cp.onchange = function (clr) {        out.value = clr;        document.body.style.background = clr;        document.body.style.color = Raphael.rgb2hsb(clr).b s it. Too easy                    icon.node.onclick = null;};