JavaScript .change() method with visible selector issue change method in jquery,change method in angular 6,change

I am trying to have a change method for all visible select elements.

$('.select_elements:visible').change(function() {
  // function
)};

The above doesn't seem to run when I change the select element. However if I write this it seems to work.

$('.select_elements').change(function() {
  if ($(this).is(':visible')) {
    // function
  }
)};

Can anyone explain this? It wasted years (hours) of my life...

Answer:1

The difference is that the first version, where :visible is in the selector, only attaches the change event handler to the select elements that are visible in the DOM when the page loads.

The latter version attaches the event handler to all select elements, then checks their visibility at the time the event was fired.

Answer:2

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