CODEWITHSUNDEEP
jquery
Hulk
Hulk

Reputation: 34170

jquery multi select box check whether elements present or not

How to check whether multiple select box contains any element or not.In this case there are no elements in the multiselect box.I tried the following.I get an error at selected_available_segments.length as null

<select multiple id="selected_available_segments"> 
</select>

Jquery

  var selected_available_segments = $("#selected_available_segments").val();    
  if ($('#selected_available_segments').size() != 0) {
   for(var i =0; i< selected_available_segments.length;i++)
    {
        alert("Got it");
    }
}

Upvotes: 0

Views: 432

Answers (3)

UweB
UweB

Reputation: 4110

if ($('#selected_available_segments').is(':empty') === false) {
    //
}

or

if (!$('#selected_available_segments').is(':empty')) {
    //
}

(However, i find it's easy to miss the ! here, so I prefer my first solution.)

JSFiddle: http://jsfiddle.net/KARN2/1/

Upvotes: 0

Spokey
Spokey

Reputation: 10994

var options = $('#selected_available_segments option').length;

if (options){
    for(var i = 0; i < options; i++)
    {
        alert("Got it");
    }
}

Upvotes: 0

tymeJV
tymeJV

Reputation: 104775

Check the option size of the list:

if ($("#selected_available_segments option").length) {
    console.log("Im there!");
};

Demo: http://jsfiddle.net/Tp4EB/

Upvotes: 2

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