Created
June 24, 2022 18:02
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| <body onload="showOrHideAlert()"> | |
| <div id='alert' style="background:yellow"> | |
| Alert banner generated by PHP, always in the HTML | |
| <a id='alert_dismiss' onclick="setDismissAlertCookie()">[X]</a> | |
| </div> | |
| <script> | |
| function showOrHideAlert() { | |
| const hidden = document.cookie.split('; ').find(row => row.startsWith('dismissAlert='))?.split('=')[1]; | |
| if ( '1' == hidden ) | |
| document.querySelector('#alert').hidden=true; | |
| } | |
| function setDismissAlertCookie() { | |
| document.cookie = "dismissAlert=1"; | |
| document.querySelector('#alert').hidden=true; | |
| } | |
| </script> | |
| hello world. | |
| </body> |
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