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POHow do I dynamically set the selected option of a drop-down list using jQuery, JavaScript and HTML?
 

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  1. POHow do I dynamically set the selected option of a drop-down list using jQuery, JavaScript and HTML?
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    <p>For some reason, I can't get this to work. </p> <p>My options list is populated dynamically using these scripts:</p> <pre><code>function addOption(selectId, value, text, selected) { var html = '&lt;option value="'+value+'"&gt;'+text+'&lt;/option&gt;'; if (selected == "on") { html = '&lt;option value="'+value+'" selected="selected"&gt;'+text+'&lt;/option&gt;'; } $('#'+selectId).append(html); } function addSalespersonOption(id, name, defsales) { addOption('salesperson', id, name, defsales); } </code></pre> <p>Here is the HTML:</p> <pre><code>&lt;td class="text-r"&gt;&lt;label for="salesperson"&gt;Salesperson:&lt;/label&gt;&lt;/td&gt; &lt;td&gt; &lt;select id="salesperson"&gt; &lt;option value=""&gt;(select)&lt;/option&gt; &lt;/select&gt; &lt;/td&gt; </code></pre> <p>So far, the output is:</p> <pre><code>&lt;option value="1266852143634" selected="selected"&gt;Eric Hunt&lt;/option&gt; </code></pre> <p>The DOM shows this:</p> <pre><code>index 2 disabled false value "1266852143634" text "Eric Hunt" selected false defaultSelected true </code></pre> <p>But for some reason, when the page is loaded, the dropdown does not display Eric Hunt as pre selected. Nor is anything for that matter.</p> <p>How can I get "selected true" instead of "defaultSelected true"?</p> <hr> <p>EDIT: As it turns out, the above code works perfectly, thanks to the help of <a href="https://stackoverflow.com/users/476/deceze">deceze</a> and <a href="https://stackoverflow.com/users/225085/rosscj2533">rosscj2533</a>'s answers from below. The only reason it's not working for me is, I found Ruby code that was overwriting the select elements.</p> <p>Thanks for everyone's help on this,</p> <p>Cheers</p>
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      1. POHow do I dynamically set the selected option of a drop-down list using jQuery, JavaScript and HTML?
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      1. POHow do I dynamically set the selected option of a drop-down list using jQuery, JavaScript and HTML?
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    1. COYour `addOption` function seems pretty weird. The first time you call it like a function, the second time you're passing it to `$()` like an object, that's probably where your problem is. Just to make sure I understand what you want to do: You're trying to insert a new option into an existing `select` element and make that option selected, right?
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    2. COThe function addSalespersonOption(id, name, defsales) { addOption('salesperson', id, name, defsales); is dynamically building a list of options from stored data to be used in the select element. The if statement was my attempt to determine witch one of those options will display as the default selection in the select element. like we would if we were to hard code the select element. <option select="selected></option>
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