newICSS/src/components/AddAssistCheck/Textarea/index.jsx

import React, { Component } from "react";
import style from "./index.less";
import config from '@config/index';
import $ from 'jquery';

class Textarea extends Component {
  constructor(props) {
    super(props);
    this.state = {
      timer:null,
      val:'报告描述或意见'
    };
    this.$dom = React.createRef();
    this.$domW = React.createRef();
    this.handleInput = this.handleInput.bind(this);
  }
  handleInput(e){
    const {handleChangeAssistValue,idx,handlePush} = this.props;
    const text = e.target.innerText || e.target.innerHTML;
    const stimer = this.state.timer;
    handleChangeAssistValue&&handleChangeAssistValue(text,idx);
    //右侧推送--延时推送
    clearTimeout(stimer);
    let timer = setTimeout(function(){
      handlePush&&handlePush();
      clearTimeout(stimer);
    },config.delayPushTime);

    if(text.trim() != '' && text != '<br>'){
      e.target.nextSibling.innerText = ''
      e.target.nextSibling.innerHTML = ''
    }else{
      e.target.nextSibling.innerText = '报告描述或意见'
      e.target.nextSibling.innerHTML = '报告描述或意见'
    }
    this.setState({
      timer
    });
  }
  shouldComponentUpdate(next){
    if(JSON.stringify(next) == JSON.stringify(this.props)){
      return false;
    }
    return true;
  }
  componentWillReceiveProps(next){
    const isRead = this.props.isRead;
    if(next.isRead != isRead){
      this.$dom.current.innerText?(this.$dom.current.innerText = next.value||'') : (this.$dom.current.innerHTML = next.value||'')
    }
  }
  componentDidMount(){
    const {value} = this.props;
    if(value && value.trim()){
      this.$dom.current.innerText?(this.$dom.current.innerText = value) : (this.$dom.current.innerHTML = value)
      this.$dom.current.nextSibling.innerText = '';
      this.$dom.current.nextSibling.innerHTML = '';
    }else{
      this.$dom.current.nextSibling.innerText = '报告描述或意见'
      this.$dom.current.nextSibling.innerHTML = '报告描述或意见'
    }
  }
  render() {
    const {idx} = this.props;
    return (
      <div className={style.textWap}>
        <div className={style.divTextarea}
            contenteditable={true}
            ref={this.$dom}
            onInput={this.handleInput}
            onPropertyChange={this.handleInput}
        ></div>
        <p style={{position: "absolute",left: '0',top: '0',color: "#a5a3a3",zIndex: '5'}} className="textareaWarring"></p>
      </div>
    );
  }
}

export default Textarea;