HTML Reference

HTML – onchange Event

The onchange event fires when the value of the element is changed by the user and the element loses focus.

HTML Reference

HTML – onfocus Event

The onfocus event fires when a form field gains focus as the user clicks into it. The onfocus event is the opposite of the onblur event.

HTML Reference

HTML – onfocusin Event

The onfocusin event fires when a form field is about to gain focus as the user clicks into it. The onfocusin event is the opposite of the onfocusout event.

HTML Reference

HTML – onfocusout Event

The onfocusout event fires when a form field is about to lose focus as the user clicks out of it. It’s the opposite of the onfocusin event.

HTML Reference

HTML – oninput Event

The oninput event fires when the value of an HTML input or textarea element is first input or is changed.

HTML Reference

HTML – oninvalid Event

The oninvalid event fires when an input element is invalid (e.g., if the required attribute is set and the field is empty).

HTML Reference

HTML – onreset Event

The onreset event fires when the user resets the form by clicking the reset button.

HTML Reference

HTML – onsearch Event

The onsearch event fires when a user presses the “enter” key or clicks the “x” button in an input element with type=”search”.

HTML Reference

HTML – onselect Event

The onselect event fires after text has been selected in an HTML input or textarea element.

HTML Reference

HTML – onsubmit Event

The onsubmit event fires when the user submits the form by clicking the submit button.

HTML Reference

HTML – Input Types

There are numerous input types for a form’s input tag. Choosing the correct type can be useful in displaying the correct type of keyboard on mobile devices.

HTML Reference

HTML – Table Templates

These are two HTML templates, one for a basic table and another for an advanced table with a header, body, and footer section, as well as a table caption.

CSS Reference

CSS – :checked Selector

The :checked selector matches every checked input element for radio buttons, checkboxes, and option elements.

CSS Reference

CSS – :in-range Selector

The :in-range selector selects elements with a value that is within a specified range, and only works for input elements with min/max attributes.

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