我的一个组件中有一个名为transcript的道具。当我说出语音意图时,它会更新。我想随时随地运行一个函数,该函数将抄本作为参数
在这里,我尝试在将成绩单加载到的跨度内执行一个OnChange = {}函数,但是我知道此方法无效,这只是解释我要完成的工作的最简单方法>
import React, { Component } from "react";
import SpeechRecognition from "react-speech-recognition";
import { Button } from 'react-bootstrap';
class Dictaphone extends Component {
highlightOnRead=(transcript, cursor)=>{
console.log("transcript",transcript)
console.log("cursor",cursor.anchorNode.parentNode.id) //we only need the word
if(transcript.includes(" ")){
transcript = transcript.split(" ").pop()
}
if(transcript = cursor.textContent.toLowerCase()){
cursor.style.backgroundColor = 'yellow'; //highlight the span matching the intent
}
cursor = document.getElementById(cursor.anchorNode.parentNode.id).nextSibling.nextElementSibling;
return cursor
};
render() {
const {transcript, resetTranscript, browserSupportsSpeechRecognition} = this.props
var cursor=''
if (!browserSupportsSpeechRecognition) {
return null
}
if(transcript==="notes"||transcript==="cards"||transcript==="home"|| transcript==="settings" || transcript==="read document"){
this.libraryOfIntents(transcript,resetTranscript);
}
return (
<div>
<span id="transcriptSpan"className="transcriptspan" onChange={()=>{
if(this.props.readAlongHighlightState===true){
if(cursor===''){
this.highlightOnRead(transcript,window.getSelection())
}else{
this.highlightOnRead(transcript,cursor)
}
}
}}> {transcript} </span>
<Button variant="outline-dark" onClick={resetTranscript}>Reset</Button>
</div>
)
}
}
export default SpeechRecognition(Dictaphone)
答案 0 :(得分:0)
您可以使用称为componentDidUpdate
的生命周期方法
componentDidUpdate(prevProps) {
if (this.props.transcript !== prevProps.transcript) { // check if your props is changed
// Make your function call here
}
}