How to check a select box is triggered manually or through .trigger()?

Question

I've a select box and I've attached an event listener like below

$('#select').on('change', function(){
  console.log("Changed")
})

This callback function will triggered if I manually change the select box and through jQuery using trigger method

$('#select').trigger('change');

So my requirement comes here, is there any way to check inside the change event listener whether the event is triggered manually or through .trigger('change') method

what I need exactly is,

$('#select').on('change', function(){
  if(eventtriggeredmanually){
    console.log("Changed");   // need to do some logics if it is triggered manually not through .trigger('change') method
  }
})

if you want to distinguish between them then you can set custom data like `$('#select').data("manuallyTriggered", true)` before firing the `$('#select').trigger('change')` statement and in your event listener code you can check this data to make the difference. — vijayP, Jul 08 '16 at 09:26

score 0 · Answer 1 · answered Jul 08 '16 at 09:28

0

Not any easy fixes.

My recommendation is to make two event handlers:

$('#select').on('changeProg', function(){
  console.log("Changed through code")
  toDo()
})
$('#select').on('change', function(){
  console.log("Changed manually")
  toDo()
})
function toDo(){ ... }

where you then use the first when you want to trigger through code

$('#select').trigger('changeProg');

answered Jul 08 '16 at 09:28

Mads Buch

344
2
10

any better solution than this. – Raja Sekar Jul 08 '16 at 09:30
got it. http://stackoverflow.com/questions/6692031/check-if-event-is-triggered-by-a-human – Raja Sekar Jul 08 '16 at 09:31
thanks for your answer. – Raja Sekar Jul 08 '16 at 09:32

How to check a select box is triggered manually or through .trigger()?

1 Answers1