Answers for "how to preovide a copy clipboard html"

js copy string to clipboard

const el = document.createElement('textarea');
el.value = str;	//str is your string to copy
document.body.appendChild(el);
el.select();
document.execCommand('copy');	// Copy command
document.body.removeChild(el);

javascript copy to clipboard

$(document).ready(function(){
	$("#ewefmwefmp").click(function(){
    //alert()
      var copyText = document.getElementById("myInput");
      copyText.select();
      copyText.setSelectionRange(0, 99999)
      document.execCommand("copy");
      alert("Copied the text: " + copyText.value);
    
    });
});