Created
November 22, 2019 01:58
-
-
Save DonerKebab/fbd9287388e281d532f11d249ba8c3c1 to your computer and use it in GitHub Desktop.
hien thi error message su dung visibility
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8'> | |
| <meta http-equiv='X-UA-Compatible' content='IE=edge'> | |
| <title>Page Title</title> | |
| <meta name='viewport' content='width=device-width, initial-scale=1'> | |
| </head> | |
| <body> | |
| <div> | |
| User name <input type="text" id="name"> <span id="invalidName" style="color: red; visibility: hidden;">Username is required.</span> | |
| </div> | |
| <div> | |
| Password <input type="password" id="password"> <span id="invalidPw" style="color: red; visibility: hidden;">Password is required.</span> | |
| </div> | |
| <button onclick="login()">Login</button> | |
| <script> | |
| function login() { | |
| var flag = true; | |
| var name = document.getElementById("name").value; | |
| var password = document.getElementById("password").value; | |
| document.getElementById("invalidName").style.visibility = "hidden"; | |
| document.getElementById("invalidPw").style.visibility = "hidden"; | |
| if (name == '') { | |
| document.getElementById("invalidName").style.visibility = "visible"; | |
| flag = false; | |
| } | |
| if (password == '') { | |
| document.getElementById("invalidPw").style.visibility = "visible"; | |
| flag = false; | |
| } | |
| if(flag != false) | |
| { | |
| if (name == 'admin' && password == 'admin') { | |
| alert("Dang nhap thanh cong"); | |
| } else { | |
| alert("Dang nhap that bai"); | |
| } | |
| } | |
| } | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment