April 9, 2019
Javascript Challenge #1: Toggle Multiple Checkboxes
This is continuation of previous challenge. Previous challenge was about jquery and we are converting same code into javascript.
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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> </head> <body> <input type="checkbox" name="all" id="all" value="all"> <label for="all">All</label> <input type="checkbox" name="apple" id="apple" value="apple"> <label for="apple">Apple</label> <input type="checkbox" name="orange" id="orange" value="orange"> <label for="orange">Orange</label> <input type="checkbox" name="mango" id="mango" value="mango"> <label for="mango">Mango</label> <input type="checkbox" name="grapes" id="grapes" value="grapes"> <label for="grapes">Grapes</label> <script src="script.js"></script> </body> </html> |
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const all = document.getElementById('all'); all.addEventListener('click', toggle); function toggle(){ const isChecked = all.checked; Array.from(document.getElementsByTagName('input')).forEach(element =>{ element.checked = isChecked; }); } Array.from(document.querySelectorAll('input:not(#all)')).forEach(element =>{ element.addEventListener('click', uncheckAll); }); function uncheckAll(){ all.checked = false } |
