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POjquery to detect select finished loading
 

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  1. POjquery to detect select finished loading
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    <p>How would you approach this question: I have 3 select (dropdown), one is person, one is State, one is city list.</p> <p>When a state is selected, all city within that state will be loaded to city list</p> <p>My problem when the person is changed, I can change the select (dropdown) with</p> <pre><code>$('#State').find('[value="' + user.State + '"]').prop('selected', true); </code></pre> <p>since state is pre-loaded. after that I had</p> <pre><code>$('#State').trigger('change'); </code></pre> <p>to load the city list</p> <p>My question is how do I detect $('#City') finished loading from ajax? Maybe something like this:</p> <pre><code>$('#City').on('load', function(){ $('#City').find('[value="' + user.City+ '"]').prop('selected', true); }); </code></pre> <p>but I think I'm doing something wrong...</p> <p>Any advise? thanks!</p> <p>Here's the complete code:</p> <pre><code>$('document').ready(function () { $('#State').live('change', function () { GetCityList($(this).val()); }); // when loading, detect query string for user's name var user = GetUserInfo(); if (user.Name != '') { $('#State').find('[value="' + user.State + '"]').prop('selected', true); } $('#State').trigger('change'); // this line will not work because City has not finished loading $('#City').find('[value="' + user.City + '"]').prop('selected', true); }); function GetCityList(State) { $.getJSON('/Handler.ashx?State=' + State, function (data) { var html = ''; // process data to produce html $('#CityList').html(html); }); } </code></pre>
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    1. COYou can use the ajax callaback `.done()` to perfrom anything you want once the loading is finished. Also, why are looking for a selected element in the city select just after it has loaded ? You don't wait for the user to select a city ?
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    2. COajax success function http://stackoverflow.com/questions/1185712/how-to-use-ajax-to-populate-state-list-depending-on-country-list
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    3. COmy load city does not take any argument, so when the state is changed, city is loaded. Does that mean I have to add to take argument so when it's loaded, it'll change to the desired value? if that's the case, how do I pass argument when I call .trigger()?
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      1. USJim
 

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