ThatManK Mobile Article

记住用户名

Category: JS Tutorial: DOM操作 Published: 2026-04-07 13:58 Views: 20 Likes: 0 Comments: 0

<!DOCTYPE html>
<html lang="en">
  <head></head>

  <body>
    <input type="text" id="username" />
    <input type="checkbox" name="" id="remember" /> 记住用户名

    <script>
      var username = document.querySelector("#username");
      var remember = document.querySelector("#remember");

      if (localStorage.getItem("username")) {
        username.value = localStorage.getItem("username");
        remember.checked = true;
      }

      remember.addEventListener("change", function () {
        if (this.checked) {
          localStorage.setItem("username", username.value);
        } else {
          localStorage.removeItem("username");
        }
      });
    </script>
  </body>
</html>