Ajax加载的内容事件多次触发

Question

I have a div in which I have a paragraph and a button like this:

<div id="my_div">
    <p>This is a paragraph</p>
    <button class="my_btn">Click here!</a>
</div>

The content inside my div is loaded via Ajax. Now let's say that I have something like this in the header of my page to test the button:

$(function(){

    $(document).on('click', '.my_btn', function(){

        alert('my button works!');        

    });

});

The problem I'm having is that everytime the content is loaded in my div with my paragraph and my button, when I click on my button I get my alert('my button works!') the same amount of time, meaning, if the content is loaded 100 times, I get my alert 100 times, any idea how I can fix this issue and why this is happening please?

Thank you

Answer 1

This is a bit of a hack but should work

 $(function(){

   $(document)
    .off()
    .on( 'click', '.my_btn', function(){

    alert('my button works!');        

  });

});

Answer 2

can you post the ajax call and how you are loading your div for a more detailed explanation.

That said, here is some sample code that seems to work fine. fiddle here

<div id='data' style='display:none;'>
    <p>This is a paragraph</p>
    <button class="my_btn">Click here!</a></div>
<div id='target'></div>
<button class='load'>this load works</button>

$(document).ready(function() {
    $(document).on('click', '.my_btn', function(){
        alert('my button works!');        
    });       
    $('.load').click(function() {
        $('#target').html($('#data').html());
    });    
});