HTML <input> checked Attribute
An HTML form with a pre-selected checkbox:
<input type="checkbox" name="vehicle" value="Bike"> I have a bike<br>
<input type="checkbox" name="vehicle" value="Car" checked> I have a car
<br><input type="submit" value="Submit">
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The checked attribute is supported in all major browsers.
Definition and Usage
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">.
Differences Between HTML 4.01 and HTML5
Differences Between HTML and XHTML
In XHTML, attribute minimization is forbidden, and the checked attribute must be defined as <input checked="checked" />.
HTML <input> tag
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