JavaScript: Copy a string to the clipboard

JavaScript fundamental (ES6 Syntax): Exercise-2 with Solution

Copy String to Clipboard

Write a JavaScript program to copy a string to the clipboard.

• Create a new <textarea> element, fill it with the supplied data and add it to the HTML document.
• Use Selection.getRangeAt()to store the selected range (if any).
• Use Document.execCommand('copy') to copy to the clipboard.
• Remove the <textarea> element from the HTML document.
• Finally, use Selection().addRange() to recover the original selected range (if any).

NOTICE: The same functionality can be easily implemented by using the new asynchronous Clipboard API, which is still experimental but should be used in the future instead of this snippet.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2
  const copy_to_Clipboard = str => {
  const el = document.createElement('textarea');
  el.value = str;
  el.setAttribute('readonly', '');
  el.style.position = 'absolute';
  el.style.left = '-9999px';
  document.body.appendChild(el);
  const selected =
    document.getSelection().rangeCount > 0 ? document.getSelection().getRangeAt(0) : false;
  el.select();
  document.execCommand('copy');
  document.body.removeChild(el);
  if (selected) {
    document.getSelection().removeAllRanges();
    document.getSelection().addRange(selected);
  }
};

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-1-2 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript program that copies a string to the clipboard using the modern Clipboard API with proper permission handling.
• Write a JavaScript function that temporarily creates a hidden textarea to copy a given string to the clipboard.
• Write a JavaScript program that copies a string to the clipboard and then verifies the copied value by reading it back.

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