add copy button in textbox css code example
Example: 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);
});
});