inert - Web APIs 编辑

The HTMLElement property inert is a Boolean that, when present, makes the browser "ignore" user input events for the element, including focus events and events from assistive technologies. The browser may also ignore page search and text selection in the element. This can be useful when building UIs such as modals where you would want to "trap" the focus inside the modal when it's visible.

Syntax

isInert = HTMLElement.inert;

HTMLElement.inert = true | false;

Value

A Boolean which is true if the element is inert; otherwise, the value is false.

Example

HTML

<div>
  <label for="button1">Button 1</label>
  <button id="button1">I am not inert</button>
</div>
<div inert>
  <label for="button2">Button 1</label>
  <button id="button2">I am inert</button>
</div>

CSS

[inert] > * {
  opacity: .5;
}

Note that the attribute, by itself, will not cause any visual change to the content as displayed in the browser. In the example above, CSS has been applied so that any direct descendant of an element with the inert attribute is rendered semi-opaque.

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• Inert Polyfill