The value property of the CSSKeywordValue interface returns or sets the value of the CSSKeywordValue.

A string.

TypeError

Thrown if the value property is an empty String when being set.

The following example resets the CSS display property to its defaults.

let indicator = document.getElementById("indicator");
indicator.attributeStyleMap.set("display", new CSSKeywordValue("initial"));
indicator.attributeStyleMap.get("display").value; // 'initial'