StylePropertyMapReadOnly.forEach() - Web APIs 编辑

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The StylePropertyMapReadOnly.forEach() method executes a provided function once for each element of StylePropertyMapReadOnly.

Syntax

StylePropertyMapReadOnly.forEach(function callback(currentValue[, index[, array]]) {
    //your code
}[, thisArg]);

Parameters

callback

The function to execute for each element, taking three arguments:

currentValue

The value of the current element being processed.

indexOptional

The index of the current element being processed.

arrayOptional

The StylePropertyMapReadOnly thatforEach() is being called on.

thisArg Optional

Value to use as this (i.e the reference Object) when executing callback.

Return value

undefined.

Example

Here is an example of using forEach() on a retrieved Element.computedStyleMap().

// get a button element
const buttonEl = document.querySelector('.example');

// we can retrieve all computed styles with `computedStyleMap`
const allComputedStyles = buttonEl.computedStyleMap();

// forEach will allow us to run code over each prop/val pair
allComputedStyles.forEach((elem, index, arr) => {
  // oode to run for each pair
})

Specifications

Browser compatibility

BCD tables only load in the browser