# Programmatically uncheck a check box

**URL:** <https://discourse.processing.org/t/programmatically-uncheck-a-check-box/38393>\
**Category:** Beginners\
**Created:** [August 17, 2022, 4:04pm UTC](https://discourse.processing.org/t/programmatically-uncheck-a-check-box/38393 "2022-08-17T16:04:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Sunt](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/sunt/32/16827_2.png) [@Sunt](https://discourse.processing.org/u/Sunt)\
**Post date:** [August 17, 2022, 4:04pm UTC](https://discourse.processing.org/t/programmatically-uncheck-a-check-box/38393/1 "2022-08-17T16:04:00Z")

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Hi. How can I programmatically uncheck a check box.?  
I’ve searched and tried a lot of things like checkbox.elt.disabled = false;  
But nothing works.  
Thanks in advance.

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**Author:** ![svan](https://avatars.discourse-cdn.com/v4/letter/s/82dd89/32.png) [@svan](https://discourse.processing.org/u/svan)\
**Post date:** [August 17, 2022, 4:17pm UTC](https://discourse.processing.org/t/programmatically-uncheck-a-check-box/38393/2 "2022-08-17T16:17:52Z")

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[https://p5js.org/reference/#/p5/createCheckbox](https://p5js.org/reference/#/p5/createCheckbox)

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**Author:** ![GoToLoop](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/gotoloop/32/86_2.png) [@GoToLoop](https://discourse.processing.org/u/GoToLoop)\
**Post date:** [August 17, 2022, 4:27pm UTC](https://discourse.processing.org/t/programmatically-uncheck-a-check-box/38393/3 "2022-08-17T16:27:08Z")

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> [@Sunt](#):
>
> I’ve searched and tried a lot of things like `checkbox.elt.disabled = false;`

> <https://github.com/processing/p5.js/blob/v1.4.2/src/dom/dom.js#L588-L600>

According to the source code above your _checkbox_ variable needs to invoke method **checked()**:  
`checkbox.checked(false);`

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<div class="post-metadata">

**Author:** ![Sunt](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/sunt/32/16827_2.png) [@Sunt](https://discourse.processing.org/u/Sunt)\
**Post date:** [August 17, 2022, 4:39pm UTC](https://discourse.processing.org/t/programmatically-uncheck-a-check-box/38393/4 "2022-08-17T16:39:36Z")

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Thank you very much. 😃