JavaScript
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jQuery Check/Uncheck Checkbox

By Sam Deering

Simple jQuery code snippet to check a checkbox and also uncheck a checkbox. This is achieved by changing the checked attribute of the input element (which are commonly used in forms).

Check a checkbox

$('input[name=hierarchy_chk]').attr('checked', true);

Uncheck a checkbox

$('input[name=hierarchy_chk]').attr('checked', false);

Don’t forget to put your jQuery code inside a document ready function. See 4 different jQuery document ready examples for more info.

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