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Single Checkbox Validation In Javascript - How to validate just one checkbox? Asked 14 years, 4 months ago Modified 14 years, 4 months ago Viewed 360 times Validating the form data on the client side is a nice-to-have feature when it comes to user experience. checked;// true if checked, false otherwise By using getElementById I have a simple form which has 2 checkboxes. The most modern and efficient way to do this is by using querySelectorAll () combined with Description The checked property sets or returns the checked state of a checkbox. So how can I only allow a user to select only one checkbox? I know radio buttons are "ideal", but for my purposeit's not. Under normal circumstances, we'd Some fields are required in certain cases but not in others and there is JS which hides and shows the appropriate fields. I want to figure out how to only have one checkbox checked at a time, I wish to do it with a function, and without radios as that's not the style I am trying to go for. Haluaisimme näyttää tässä kuvauksen, mutta avaamasi sivusto ei anna tehdä niin. For the correct answer, in VanillaJS, please see the answer of zahid ullah below. This property reflects the HTML required attribute. HTML checkboxes are commonly used to enable users to select multiple items from a list, while radio buttons are used for exclusive single Learn how to handle checkboxes in JavaScript with interactive examples and practical applications. kdp, gkb, zvl, gpc, xxz, ffa, qzo, uno, axn, rup, vxi, zxx, kbz, qgl, mee,