The has() method of the StylePropertyMapReadOnly interface indicates whether the specified property is in the StylePropertyMapReadOnly object.
The has() method of the StylePropertyMapReadOnly interface indicates whether the specified property is in the StylePropertyMapReadOnly object.
js
has(property)
propertyThe name of a property.
A boolean value.
Here we use the has() method to see if the padding-top property is present within the button elements style attribute.
js
// 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
| Specification |
|---|
| CSS Typed OM Level 1 # dom-stylepropertymapreadonly-has |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
has |
66 | 79 | No | No | 53 | 16.4 | 66 | 66 | No | 47 | 16.4 | 9.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/StylePropertyMapReadOnly/has