Prevent Default Event Actions Using MooTools 1.2
Many sweet JavaScript events are trigger by clicking on a link or a submit button. What if you don't want the browser to follow the link? What if you don't want the form to be submitted traditionally? MooTools allows you to prevent the default actions of most elements by using the preventDefault() method.
The Sample XHTML
<p><a href="http://scriptandstyle.com" class="prevent">ScriptAndStyle.com</a></p>
<p><input type="checkbox" class="prevent" /></p>
<p><input type="submit" class="prevent" value="Submit Form" /></p>
The action of any element with the prevent class will be nullified upon click.
The MooTools 1.2 Code
window.addEvent('domready', function() {
$each($$('.prevent'),function(el) {
el.addEvent('click',function(event) {
event.preventDefault();
});
});
});
You can also prevent the browser from allowing image dragging! I did, however, notice that this function did not work correctly on a radio input.
![JavaScript Promise API]()
While synchronous code is easier to follow and debug, async is generally better for performance and flexibility. Why "hold up the show" when you can trigger numerous requests at once and then handle them when each is ready? Promises are becoming a big part of the JavaScript world...
![Create a Sheen Logo Effect with CSS]()
I was inspired when I first saw Addy Osmani's original ShineTime blog post. The hover sheen effect is simple but awesome. When I started my blog redesign, I really wanted to use a sheen effect with my logo. Using two HTML elements and...
![Resize an Image Using Canvas, Drag and Drop and the File API]()
Recently I was asked to create a user interface that allows someone to upload an image
to a server (among other things) so that it could be used in the various web sites my
company provides to its clients. Normally this would be an easy task—create a...
![Fancy FAQs with jQuery Sliders]()
Frequently asked questions can be super boring, right? They don't have to be! I've already shown you how to create fancy FAQs with MooTools -- here's how to create the same effect using jQuery.
The HTML
Simply a series of H3s and DIVs wrapper...
You can use the
$lambdafunction and a little bit of the Elements-Class magic to make this a one-liner:window.addEvent('domready', function() { //Now every click on one of the .prevent-Elements returns a 'false' and the propagation of the event gets stopped. $$('.prevent').addEvent('click',$lambda(false)); });@thomasd: Sweet tip!
i found that the method that fails the least is:
$("bla").addEvent('click',function(_e){ new Event(_e).preventDefault().stopPropagation(); //alternatively: new Event(_e).stop(); //or very simple in mootools 1.2: return false; })