Triggering change event on file input when invoked from javascript (ie headache)
I don't know what I'm doing wrong. I've found fixes/hacks for this but none of them seem to be working. Trying to use a single button/image (something) instead of the input-file control. It works so far except for in internet explorer. In ie the 'select file' dialog appears, lets you choose a file, the accompanying textbox gets populated but the change event doesn't fire. I've tried focus, blur, live, onpropertychange, change, onchange... but they just won't work. Any help?
jQuery:
$(fu开发者_如何转开发nction() {
var a = $('a.#LinkUpload');
var f = $('input.#file');
a.click(function() {
f.click();
});
f.change(function() {
alert('changed!');
});
});
html:
<body>
<form action="">
<div>
<a id="LinkUpload">Click Me!</a>
<input type="file" id="file" name="file" />
</div>
</form>
</body>
@Pointy said it. If it's an ID, you don't need to specify the tag name, so just do something like:
var $a = $('#LinkUpload'),
$b = $('#file');
It's also a good practice to add a $ (dollar sign) in your variable names when you're caching a jQuery object, just so you know that a variable is actually a jQuery object.
Here's a slightly cleaner implementation of the file part of Oppdal's solution:
f.bind(($j.browser.msie && $j.browser.version < 9) ? 'propertychange' : 'change',
function(){
alert('changed!');
});
It has been changed in the new jQuery version. I updated from 1.4.4 to 1.6.2 and it works fine without the workaround.
Got it! (I think).
$(function() {
var a = $('#LinkUpload');
var f = $('#file');
a.click(function() {
f.click();
setTimeout(function() {
f.val(f.val());
}, 1);
});
if ($.browser.msie && $.browser.version < 9) {
f.bind('propertychange', function() {
alert('changed');
});
} else {
f.change(function() {
alert('changed!');
});
}
});
Seems to work.
加载中,请稍侯......
精彩评论