Copy string to clipboard initiated by click on injected element in JavaScript

Question

Further to this question: Copy to clipboard with jQuery/js in Chrome

The code from the above question works perfectly for copying a string to clipboard with JavaScript, but I need to trigger the process from a user click onto an injected element. For some reason, the code will not work if the element is injected.

In below code example, I added a red ? button and prepended it to the body. Note that clicking on it does not copy the desired text to clipboard. Why is that?

_{(Note that I added my bit in jQuery as a personal preference)}

jsFiddle demo

var elem = document.getElementById('test');
var elem2 = document.getElementById('test2');
var elem3 = document.getElementById('test3');
elem.onmouseup = function () {
    document.execCommand('copy');
}

elem2.addEventListener('copy', function (e) {
    e.preventDefault();
    if (e.clipboardData) {
        e.clipboardData.setData('text/plain', 'custom content');
    } else if (window.clipboardData) {
        window.clipboardData.setData('Text', 'custom content');
    }

});

elem3.onclick = function () {
    document.execCommand('copy');
}

elem3.addEventListener('copy', function (e) {
    e.preventDefault();
    if (e.clipboardData) {
        e.clipboardData.setData('text/plain', 'bonk custom contentt');
    } else if (window.clipboardData) {
        window.clipboardData.setData('Text', 'bonkcustom content from click');
    }
});
$('body').prepend('<div id="test4" title="Click to copy text RAINBOX to clipboard">?</div>');
$(document).on('click', '#test4', function(e){
    document.execCommand('copy');
});
$(document).on('copy', '#test4', function(e){
    e.preventDefault();
    if (e.clipboardData) {
        e.clipboardData.setData('text/plain', 'Over the rainbox');
    } else if (window.clipboardData) {
        window.clipboardData.setData('Text', 'Rainbox');
    }
});

#test4{display:inline-block;background-color:tomato;font-size:1.2rem;padding:0 5px;border-radius:3px;cursor:pointer;}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<div id='test'>Select text, it'll copy on mouse up</div>
<div id='test2'>Copy text using ctrl-c</div>
<div id='test3'>Click here to copy text</div>
<div id='ta'><textarea cols="40" rows="5" placeholder="Test pasting here"></textarea></div>

score 3 · Accepted Answer · answered Apr 26 '17 at 16:17

Use e.originalEvent.clipboardData to get original event, and not jQuery event object

var elem = document.getElementById('test');
var elem2 = document.getElementById('test2');
var elem3 = document.getElementById('test3');
elem.onmouseup = function () {
    document.execCommand('copy');
}

elem2.addEventListener('copy', function (e) {
    e.preventDefault();
    if (e.clipboardData) {
        e.clipboardData.setData('text/plain', 'custom content');
    } else if (window.clipboardData) {
        window.clipboardData.setData('Text', 'custom content');
    }

});

elem3.onclick = function () {
    document.execCommand('copy');
}

elem3.addEventListener('copy', function (e) {
    e.preventDefault();
    if (e.clipboardData) {
        e.clipboardData.setData('text/plain', 'bonk custom contentt');
    } else if (window.clipboardData) {
        window.clipboardData.setData('Text', 'bonkcustom content from click');
    }
});
$('body').prepend('<div id="test4" title="Click to copy text RAINBOX to clipboard">?</div>');
$(document).on('click', '#test4', function(e){
    document.execCommand('copy');
});
$(document).on('copy', '#test4', function(e){
    e.preventDefault();
    if (e.originalEvent.clipboardData) {
        e.originalEvent.clipboardData.setData('text/plain', 'Over the rainbox');
    } else if (window.clipboardData) {
        window.clipboardData.setData('Text', 'Rainbox');
    }
});

#test4{display:inline-block;background-color:tomato;font-size:1.2rem;padding:0 5px;border-radius:3px;cursor:pointer;}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<div id='test'>Select text, it'll copy on mouse up</div>
<div id='test2'>Copy text using ctrl-c</div>
<div id='test3'>Click here to copy text</div>
<div id='ta'><textarea cols="40" rows="5" placeholder="Test pasting here"></textarea></div>

How did Hawkeye put it in that `M*A*S*H` episode? "For the first time, you've done it again!" - thanks guest271314, much appreciated. — crashwap, Apr 26 '17 at 16:41

webbm · Answer 2 · 2017-04-26T16:06:54.113

0

You need to on the event to a dynamically created element. Try this:

$('#test4').on("click", function() {
  //Your copy code  here
});

edited Apr 26 '17 at 16:06

answered Apr 26 '17 at 15:50

webbm

634
8
18

1

@ZakariaAcharki I tried it and it worked. Is it really that bad? – webbm Apr 26 '17 at 16:03
1

I'm sorry @webbm, I just want to say that the _bind_ method was depricated long time ago.. http://api.jquery.com/bind/ – Zakaria Acharki Apr 26 '17 at 16:04
@ZakariaAcharki thanks for the information. I'll update my answer to use `on` – webbm Apr 26 '17 at 16:06
1

Note that the code in the question is already using `.on()` - thanks anyway, though – crashwap Apr 26 '17 at 16:24

Copy string to clipboard initiated by click on injected element in JavaScript

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