click and copy code example

Example 1: how to copy text in the clipboard in js

<html>
  <input type="text" value="Hello world"(Can be of your choice) id="myInput"(id is the name of the text, you can change it later)
<button onclick="Hello()">Copy Text</button>

<script>
  function Hello() {
  var copyText = document.getElementById('myInput')
  copyText.select();
  document.execCommand('copy')
  console.log('Copied Text')
}
</script>

Example 2: how to make a button that paste text in a textbox html

<!DOCTYPE html>
<html>
 <head>
   <script>
     function paste() {
            var pasteText = document.querySelector("#text");
            pasteText.focus();
            document.execCommand("paste");

            pasteText.value = pasteText.value + pasteText.value;
        }
   </script>
  </head>
  <body>
    <input id="text">
    <button onclick="paste()">Paste</button>
   </body>