Pass javascript function as data-* attribute and execute

Question

We know such syntaxes as below, when defining a value for onClick attribute:

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Answer 1

If you really wanted to pass functions (with or without parameters) from one thing to another without binding them as events you could do it this way (I started from @Taplar's answer)

<button type="submit" class="marker marker1"></button>
<button type="submit" class="marker marker2"></button>
<button type="submit" class="marker marker3"></button>
<button type="submit" class="marker marker4"></button>

<script>
  var $markers = $('.marker');
  $markers.filter('.marker1').get(0).customCallback =  doWork;
  $markers.filter('.marker2').get(0).customCallback = function(){ 
    doWork(arg0,arg1); 
  };
</script>

Then you could access them in your other component as:

<script>
  $('.marker').each(function(){
    var  thisFunction = $(this).get(0).customCallback;
    //do something useful with thisFunction
  });
</script>

Answer 2

I think a better idea would be to dynamically bind the events and trigger them. If you wanted them to only be known by other code, you could use custom events.

<button type="submit" class="marker marker1"></button>
<button type="submit" class="marker marker2"></button>
<button type="submit" class="marker marker3"></button>
<button type="submit" class="marker marker4"></button>

<script>
    var $markers = $('.marker');
    $markers.filter('.marker1').bind('customCallback', function(){ alert("hi"); });
    $markers.filter('.marker2').bind('customCallback', function(){ doWork(); });
</script>

Then your other components could invoke them with $(selector).trigger('customCallback');

Answer 3

Simply with :

 $("body").on("click","button.marker", function(e) {
     eval($(this).data("callback"));
 })

Answer 4

One way is to use eval()

jQuery(".container").on("click", "button.marker", function (e) {
    var callback = jQuery(e.currentTarget).data("callback");

    var x = eval(callback)
    if (typeof x == 'function') {
        x()
    }
});

Demo: Fiddle

Note: Make sure it is safe in your environment, ie there is no possibility of script injection because of bad input from users

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