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primarykey
Id
240700
data
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0
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0
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CommentCount
1
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CreationDate
2008-10-27T17:18:42.037
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2008-10-27T17:25:53.287
LastEditDate
2017-05-23T12:26:37.537
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-1
OwnerUserId
17964
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240592
PostTypeId
2
Score
6
ViewCount
0
LastEditorDisplayName
eyelidlessness
text
Body
As far as I know, there are no events fired on Object attribute changes (edit: except, apparently, for <code>Object.watch</code>). Why not use event delegation wherever possible? That is, events on the form rather than on individual form elements, capturing events as they bubble up? For instance (my jQuery is rusty, forgive me for using Prototype instead, but I'm sure you'll be able to adapt it easily): <pre><code>$(form).observe('change', function(e) { // To identify changed field, in Proto use e.element() // but I think in jQuery it's e.target (as it should be) }); </code></pre> You can also capture <code>input</code> and <code>keyup</code> and <code>paste</code> events if you want it to fire on text fields before they lose focus. My solution for this is usually: <ol> <li>Gecko/Webkit-based browsers: observe <code>input</code> on the <code>form</code>.</li> <li>Also in Webkit-based browsers: observe <code>keyup</code> and <code>paste</code> events on <code>textarea</code>s (they do not fire <code>input</code> on <code>textarea</code>s for some reason).</li> <li>IE: observe <code>keyup</code> and <code>paste</code> on the <code>form</code></li> <li>Observe <code>change</code> on the <code>form</code> (this fires on <code>select</code>s).</li> <li>For <code>keyup</code> and <code>paste</code> events, compare a field's current value against its default (what its value was when the page was loaded) by comparing a text field's <code>value</code> to its <code>defaultValue</code></li> </ol> Edit: Here's example code I developed for preventing unmodified form submission and the like: <a href="https://stackoverflow.com/questions/194101/what-is-the-best-way-to-track-changes-in-a-form-via-javascript#194347">What is the best way to track changes in a form via javascript?</a>
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1. POIs it possible to listen for changes to an object's attributes in JavaScript?
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