CSSKeywordValue.CSSKeywordValue()

The CSSKeywordValue constructor creates a new CSSKeywordValue object which represents CSS keywords and other identifiers.

var cssKeywordValue = new CSSKeywordValue(val)

value

Sets or returns the value of the new CSSKeywordValue.

The following example resets the CSS display property to its defaults, setting the inline style attribute to style="display: initial" if viewed in the developer tools inspector.

#myElement {
  display: flex;
}

<div id="myElement">Check the developer tools to see the log in the console and to inspect the style attribute on this div.</div>

let keyword = new CSSKeywordValue('initial');
let myElement = document.getElementById('myElement').attributeStyleMap;
    myElement.set('display', keyword);

console.log( myElement.get('display').value);  // 'initial'
console.dir( keyword );