how to get the clicked option in bootstrap selectpicker?

问题

$('.excludeDaysPicker').selectpicker();

I have bootstrap selectpicker with 'multiple' choose option enabled.

<select class="excludeDaysPicker" multiple title="Not Selected">
<option value="Monday" id="1" class="excludeDays">Monday</option>
<option value="Tuesday" id="2" class="excludeDays">Tuesday</option>
<option value="Wednesday" id="3" class="excludeDays">Wednesday</option>
<option value="Thursday" id="4" class="excludeDays">Thursday</option>
<option value="Friday" id="5" class="excludeDays">Friday</option>
<option value="Saturday" id="6" class="excludeDays">Saturday</option>
<option value="Sunday" id="7" class="excludeDays">Sunday</option>
</select>

upon clicking the select option (either selecting or deselecting), I want to know which option is clicked.

I have tried.

$('.excludeDaysPicker').on('change',function(){
console.log("id::",$(this).children(':selected').attr('id'));
});

This actually does get me id. But since it is a multiple select enabled selectpicker. if already an option is selected. that option's id is get returned. for ex, in the screen shot below

if i click on wednesday, It gives me the id 2 (because tuesday is selected), But actually the id of wednesday is 3. I want the id of the option element i am clicking on.

And also I could not get the option element by giving the option element a class , because the the bootstrap selectpicker plugin creates a list for all the option element like you can see below.

so,

 $('.excludeDays').click(function()
 {
  console.log("excluded day optionselected::",$(this).attr('id'));  
 });

doesn't help either.

is there way around guys?

回答1:

To get the respective id's of the options selected :

$('.excludeDaysPicker').on('change',function(){
    $(this).find("option:selected").each(function()
    {
        alert($(this).attr("id"));
    });
});

UPDATE : To get the last selected value, push all selected values in the array and get the last element's id.

    var arr = new Array();
$('.selectpicker').on('change', function(){
     $(this).find("option").each(function()
     {
         if($(this).is(":selected"))
         {             
            id = $(this).attr("id");
            if(arr.indexOf(id) == -1)
            {
               arr.push(id);
            }
         }
         else
         {
             id = $(this).attr("id");
             arr = jQuery.grep(arr, function(value) {
              return value != id;
            });             
         }
     });

if(arr.length > 0)
    alert("Last selected id : " + arr[arr.length-1]);

  });

http://jsfiddle.net/wd1z0zmg/3/

来源：https://stackoverflow.com/questions/33571562/how-to-get-the-clicked-option-in-bootstrap-selectpicker

标签

jquery

multiple-select

bootstrap-select