js make a copy code example

Example 1: javascript copy to clipboard

function copyToClipboard(text) {
  var input = document.body.appendChild(document.createElement("input"));
  input.value = text;
  input.focus();
  input.select();
  document.execCommand('copy');
  input.parentNode.removeChild(input);
}

Example 2: copy object javascript

var x = {key: 'value'}
var y = JSON.parse(JSON.stringify(x))

//this method actually creates a reference-free version of the object, unlike the other methods
//If you do not use Dates, functions, undefined, regExp or Infinity within your object

Example 3: javascript copy to clipboard

const copyToClipboard = () => {

  navigator.permissions.query({name: "clipboard-write"}).then(result => {
    if (result.state == "granted" || result.state == "prompt") {
      // write to the clipboard now
      updateClipboard('I copy this string');
    }
  });
};

const updateClipboard = (newClip) => {
  
  navigator.clipboard.writeText(newClip).then(() => {
    // clipboard successfully set
	console.log('success');
  }, () => {
    // clipboard write failed
    console.log('Failed to copy');
  });
};

const btn = document.getElementById('copy-button');

btn.addEventListener('click', copyHashtagToClipboard);