Javascript and JQuery, how to verify if option element exists in select?

Question

Using JQuery, I\'m trying to set an option as selected in a \'select\' element based on the query string.

This question is similar to this, however I still need to k

Answer 1

Check the length of the selector:

var selectObject = $('select[name*=' + selectName + ']');
if (selectObject.length == 0)
    return;
selectObject.val(valueToSelect).attr('selected', 'selected').change();

Or use the implicit boolean conversion in javascript:

var selectObject = $('select[name*=' + selectName + ']');
if (!selectObject.length)
    return;

selectObject.val(valueToSelect).attr('selected', 'selected').change();