How to copy using clipboard.js with dynamic content and triggers

Question

After a click on .fw-code-copy-button I would like to copy source code from it's nearest container. .fw-code-copy-button-s are created dynamically, after user click dedicated "view source" button.

Html for example button:

<span class="fw-code-copy">
  <span class="fw-code-copy-button" data-clipboard-text="...">copy</span>
</span>

This is how i trigger click event, and define the source code to be copied to clipboard:

$(document).on("click", ".fw-code-copy-button", function(){
  var source = $(this).closest(".fw-code-copy").next("code").text();
});

And this is how clipboard.js triggers it's copy event

new Clipboard(".fw-code-copy-button", {
  text: function(trigger) {
    return source; // source should somehow be copied from scope above it
  }
});

Whenever i click anywhere on the website, the following error appears:

Uncaught Error: Missing required attributes, use either "target" or "text"

But first of all I don't want to define text to be copied in data-clipboard-text="..." and secondly data-clipboard-text is defined with "..." as it's value.

If someone would pay a second i would be very grateful.

[edit] I have written jsFiddle for demonstration, and suprisingly UncaughtError disappeared, but i still need to move source code from onClick to Clipboard scope.

https://jsfiddle.net/2rjbtg0c/1/

Answer 1

According to your original code:

 new Clipboard(".fw-code-copy-button", {
  text: function(trigger) {
    return $(trigger).closest(".fw-code-copy").next("code").text(); 
  }
});

Answer 2

The trigger is the button you clicked. Get the parent and then return the text inside the code block. You will also need to trim any leading and trailing white-space.

Demo

This grabs text inside a code block as in your included example

new Clipboard(".fw-code-copy-button", {
  text: function(trigger) {
    return $(trigger).parent().find('code').first().text().trim();
  }
});

.fw-code-copy {
  display: block;
  position: relative;
  width: 400px;
  height: 30px;
  background: #FFE;
  border: thin solid #FF0;
  margin-bottom: 0.5em;
  padding: 0.5em;
}
.fw-code-copy-button {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 0.25em;
  border: thin solid #777;
  background: #800080;
  color: #FFF;
}
.fw-code-copy-button:hover {
  border: thin solid #DDD;
  background: #992699;
  cursor: pointer;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/1.5.3/clipboard.min.js"></script>

<span class="fw-code-copy">
  <span class="fw-code-copy-button">Copy</span>
  <code>&lt;link rel=&quot;stylesheet&quot; href=&quot;style-1.css&quot;&gt;</code>
</span>
<span class="fw-code-copy">
  <span class="fw-code-copy-button">Copy</span>
  <code>&lt;link rel=&quot;stylesheet&quot; href=&quot;style-2.css&quot;&gt;</code>
</span>
<span class="fw-code-copy">
  <span class="fw-code-copy-button">Copy</span>
  <code>&lt;link rel=&quot;stylesheet&quot; href=&quot;style-3.css&quot;&gt;</code>
</span>