TextFormat: TextFormat() constructor

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

The TextFormat() constructor returns a new TextFormat object.

Syntax

new TextFormat()
new TextFormat(options)

An optional object with the following properties:

rangeStart: A number representing the start position of the text range that needs to be formatted.
rangeEnd: A number representing the end position of the text range that needs to be formatted.
underlineStyle: A string representing the underline style of the text range that needs to be formatted.
underlineThickness: A string representing the underline thickness of the text range that needs to be formatted.

Specification
EditContext API # dom-textformat-constructor

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`TextFormat()` constructor Experimental	Chrome – Full support Chrome 121 (Release date: 2024-01-23) footnote Full support	Edge – Full support Edge 121 (Release date: 2024-01-25) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 107 (Release date: 2024-02-07) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 121 (Release date: 2024-01-23) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 81 (Release date: 2024-03-14) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 25 (Release date: 2024-04-24) footnote Full support	WebView Android – Full support WebView Android 121 (Release date: 2024-01-23) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support

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