Question

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How can I check whether a option already exist in select by JQuery

I have

<select name="saved" class="saved" multiple="multiple">
<option value="1">Hello</option>
<option value="2">Goodbye</option>
<option value="3">Wave</option>
</select>

how would I have Jquery check if there is already an option with value=”2″ in “saved” in an if statement

I am looking to see if it exists – not if it is selected.

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I am using this in a function which may operate on more than one select box. the class name of the select box is now stored as a var “theSel” – how can I modify this for that

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Answer 1

You can use length property:

if ($('select.saved option[value="2"]').length) {
   // exists
}

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$(document).ready(function(){
    // ...
    if ($('select.'+theSel+' option[value="'+theValue+'"]').length) {
       // exists
    }
})