Copy Wordpress Title in backend

Question

So, I have a CPT and I have added some Custom Columns in the backend. I have this button at the side and it should copy the title. I was using Javascript for this and it is not working.

function myFunction() {
  var copyText = document.getElementById("clickTitle");
  copyText.select();
  document.execCommand("copy");
  alert("Copied the text: " + copyText.value);
}

.click-title{
display: none;
}

echo the_title( '<h4 class="click-title" id="clickTitle">', '</h4>' );
echo '<button class="btn btn-danger btn-sm" onclick="copyFunction()">Copy Title</button>';

But it is not working. I want the button to copy the title and I can't find a way to do that. I tried more than that.

(Click here to view image) I want to copy the title when I click Copy Title button.

Answer 1

Select only works on input text field elements

So, set a input hidden field next to your title.

function copyFunction() {
  var copyText = document.getElementById("clickTitle");
  copyText.select();
  document.execCommand("copy");
  alert(copyText.value);
}

<h4 class="click-title">This is the title to be copied.</h4>
<input id="clickTitle" type="text" value="This is the title to be copied">
<button class="btn btn-danger btn-sm" onclick="copyFunction()">Copy Title</button>

To work inside a loop, a little change should be done.

Give a unique ID for each input field:

<input id="clickTitle-<?php echo $post_id; ?>" type="text" value="This is the title to be copied">

Call the method by passing the desired ID:

<button class="btn btn-danger btn-sm" onclick="copyFunction(<?php echo $post_id; ?>)">Copy Title</button>

Then update the function to look for the right id.

function copyFunction( elId ) {
  var copyText = document.getElementById("clickTitle-" + elId );
  ...
}