StylePropertyMapReadOnly: has() method

The has() method of the StylePropertyMapReadOnly interface indicates whether the specified property is in the StylePropertyMapReadOnly object.

Syntax

has(property)

Parameters

property

The name of a property.

Return value

A boolean value.

Examples

Here we use the has() method to see if the padding-top property is present within the button elements style attribute.

// get the button element
const buttonEl = document.querySelector(".example");

// find what's in the style attribute with attributeStyleMap and has()
const hasPadTop = buttonEl.attributeStyleMap.has("padding-top");

console.log(hasPadTop); // logs true if padding-top is present in style attribute

Specifications

Browser compatibility