jQuery 1.4.2 Using .delegate() on a change event for a doropdown list
My problem is that I am not sure how to use .delegate for the following scenario:
our application has a voting system to which several rounds or steps can be added. every time a new step is added there is a list of options that defines how the round/step is to be won.
<select class="listOfOptions">
<option value="U">Unanimous</option>
<option value="M">Majority</option>
<option value="C" class="customOption"># of votes…</option>
</开发者_JAVA百科select>
now when an option is selected the following code runs
$(document).ready(function() {
$('.listOfOptions').live('change', function() {
if ($(this).find(':selected').attr('class') == 'customOption') {
// DO SOMETHING!!
}
else {
// DO SOMETHING ELSE
}
});
});
This code runs perfectly on every other browser except IE.
How would I use .delegate() on as a replacement of .live for this case?
Thank you.
This would be the syntax used with .delegate() for this particular case. Notice that the 'listOfOptions' is the class of the drop-down list.
$('body').delegate('.listOfOptions', 'change', function() {
if ($(this).find(':selected').attr('class') == 'customOption') {
// DO SOMETHING!!
}
else {
// DO SOMETHING ELSE
}
});
It works like a charm in all browsers.
Don't forget to write the delegating in a $(function() {});
block or in $(document).ready(function() {});
It won't work in IE 7-9 otherwise.
精彩评论