SpeechSynthesisEvent: charLength プロパティ
charLength
は SpeechSynthesisEvent
インターフェイスの読み取り専用プロパティで、 charIndex
の位置にある文字の後に発話される残りの文字数を返します。
音声エンジンが判断できない場合は 0 を返します。
値
整数です。
例
js
utterThis.onpause = (event) => {
const char = event.utterance.text.charAt(event.charIndex);
const charLeft = event.charLength;
if (charLeft) {
console.log(
`Speech paused. There are still ${charLeft} characters to be spoken.`,
);
} else {
console.log(
"Speech paused. The underlying speech engine can't tell how many characters are left.",
);
}
};
仕様書
Specification |
---|
Web Speech API # dom-speechsynthesisevent-charlength |
ブラウザーの互換性
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
charLength |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.