回发事件后 javascript 不工作

Question

I am using the below code to copy content to clipboard. This is for asp.net core. But once a postback happens. this code is not working. What is the issue?

  function copy() {
  var txt = document.getElementById("result");
  navigator.clipboard.writeText(txt.innerText);
}

Answer 1

Well, some browser doesn't support this navigator.clipboard.writeText() , it's kinda like a Mozilla, I'll try make alternate this code for supporting most browsers. May help, if it is result of yours will be 'txt' only or copy text only. try this:

 <input type="text" id="result" value="This is a text"/> <input type="Button" id="b1" value="Copy Here" onClick="copy()"/> <script> function copy() { /* return content of input field to variable text */ var txt = document.getElementById("result"); /* call function on button click */ txt.select(); document.execCommand("copy"); } </script>