Created
April 5, 2018 11:55
-
-
Save kristian76/e365f29a1653d65868236c74c9a2caef to your computer and use it in GitHub Desktop.
Populate drop down
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
| <html> | |
| <form> | |
| <select id="parent"> | |
| <option value="set1">Set opt1</option> | |
| <option value="set2">Set opt2</option> | |
| </select> | |
| <select id="child"> | |
| </select> | |
| </form> | |
| <script> | |
| var set1 = [1,2,3,4,5], | |
| set2 = [6,7,8,9], | |
| child = document.querySelector('#child'); | |
| document.querySelector('#parent').onchange = function(event) { | |
| var selIndex = event.target.selectedIndex, | |
| data = []; | |
| if (selIndex == 0) { | |
| data = set1; | |
| } else { | |
| data = set2; | |
| } | |
| while (child.options.length > 0) { | |
| child.remove(0); | |
| } | |
| for (var i in data) { | |
| var opt = document.createElement('option'); | |
| opt.value = i; | |
| opt.text = data[i]; | |
| child.add(opt); | |
| } | |
| }; | |
| </script> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment