Element: ariaMultiLine property

Baseline 2023

Newly available

Since ⁨October 2023⁩, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

TheariaMultiLine property of theElement interface reflects the value of thearia-multiline attribute, which indicates whether a text box accepts multiple lines of input or only a single line.

Note:Where possible use an HTML<input> element withtype="text" or a<textarea> as these have built in semantics and do not require ARIA attributes.

Value

A string with one of the following values:

"true": This is a multi-line text box.
"false": This is a single-line text box.

In this example thearia-multiline attribute on the element with an ID oftxtBoxInput is set to "true" indicating that this box allows for multiple lines of input. UsingariaMultiLine we update the value to "false".

html

<div>Enter the tags for the article</div><div  role="textbox"   contenteditable="true"  aria-multiline="true"  aria-labelledby="txtboxMultilineLabel"  aria-required="true"></div>

let el = document.getElementById("txtBoxInput");console.log(el.ariaMultiLine); // "true"el.ariaMultiLine = "false";console.log(el.ariaMultiLine); // "false"