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.
![CSS @supports]()
Feature detection via JavaScript is a client side best practice and for all the right reasons, but unfortunately that same functionality hasn't been available within CSS. What we end up doing is repeating the same properties multiple times with each browser prefix. Yuck. Another thing we...
![5 More HTML5 APIs You Didn’t Know Existed]()
The HTML5 revolution has provided us some awesome JavaScript and HTML APIs. Some are APIs we knew we've needed for years, others are cutting edge mobile and desktop helpers. Regardless of API strength or purpose, anything to help us better do our job is a...
![Use Custom Missing Image Graphics Using Dojo]()
A few months back I posted an article about how you can use your own "missing image" graphics when an image fails to load using MooTools and jQuery. Here's how to do the same using Dojo.
The HTML
We'll delegate the image to display by class...
![Send Email Notifications for Broken Images Using MooTools AJAX]()
One of the little known JavaScript events is the image onError event. This event is triggered when an image 404's out because it doesn't exist. Broken images can make your website look unprofessional and it's important to fix broken images as soon as possible.
You can use the
$lambda
function and a little bit of the Elements-Class magic to make this a one-liner:@thomasd: Sweet tip!
i found that the method that fails the least is: