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How do I check in PHP whether a checkbox is checked or not?
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Use the target. checked property on the event object to check if a checkbox is checked in React, e.g. if (event. target. checked) {} .
The checked attribute is a boolean attribute. When present, it specifies that an <input> element should be pre-selected (checked) when the page loads. The checked attribute can be used with <input type="checkbox"> and <input type="radio"> . The checked attribute can also be set after the page load, with a JavaScript.
If the checkbox is checked, then the checkbox's value will be passed. Otherwise, the field is not passed in the HTTP post.
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