javascript - Jquery - Detect click options disabled HTML select - 


$(function(){    	$("select:option").on('click', this, function(event) {  		event.preventdefault();  		alert("a");  	});  });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <select name="options" id="options">    <option value="">select</option>    <option value="1">options 1</option>    <option value="0" disabled="disabled">options 2</option>    <option value="0" disabled="disabled">options 3</option>    <option value="0" disabled="disabled">options 4</option>  </select>

i need check jquery, if user clicked on option of selector disabled, if user clicked display alert().

example: select several options, options in select have value of 0 disabled, if user clicks on of these options disabled, show an alert().

<select name="options" id="options">   <option value="">select</option>   <option value="1">options 1</option>   <option value="0" disabled="disabled">options 2</option>   <option value="0" disabled="disabled">options 3</option>   <option value="0" disabled="disabled">options 4</option> </select>

i appreciate help!

  
  
    $(function(){          var options_sel_idx = 0;            $("#options").on("change", this, function(event) {              if($(this.options[this.selectedindex]).hasclass("disabled")) {                  alert("a");                  this.selectedindex = options_sel_idx;              } else {                  options_sel_idx = this.selectedindex;              }          });      });
  
    <style type="text/css">          .disabled {color:#808080;}      </style>        <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>      <select name="options" id="options">        <option value="">select</option>        <option value="1">options 1</option>        <option value="0" class="disabled">options 2</option>        <option value="0" class="disabled">options 3</option>        <option value="0" class="disabled">options 4</option>      </select>

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