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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.
25 wrz 2024 · <input> elements of type checkbox are rendered by default as boxes that are checked (ticked) when activated, like you might see in an official government paper form. The exact appearance depends upon the operating system configuration under which the browser is running.
11 gru 2017 · If the desired functionality is for the checkbox to be checked by default but still able to be unchecked by the user, use the defaultChecked attribute: <input type="checkbox" id="inline" defaultChecked /> or. document.getElementById("inline").defaultChecked = true;
27 lip 2017 · <input> elements of type checkbox are rendered by default as square boxes that are checked (ticked) when activated, like you might see in an official government paper form. They allow you to select single values for submission in a form (or not).
There is no HTML-only method of representing a checkbox's unchecked state (e.g. value=unchecked). If you wanted to submit a default value for the checkbox when it is unchecked, you could include JavaScript to create a <input type="hidden"> within the form with a value indicating an unchecked state.
The HTML checked attribute is a boolean attribute and specifies that an <input> element must be checked when the page loads. You can use this attribute only on the <input> element (<input type="checkbox"> and <input type="radio">).
The <input type="checkbox"> defines a checkbox. The checkbox is shown as a square box that is ticked (checked) when activated. Checkboxes are used to let a user select one or more options of a limited number of choices.
