react如何阻止冒泡失败

react如何阻止冒泡失败

• 来源:网络
• 更新日期:2020-11-17

摘要：react阻止冒泡失败的方法：1、在没有涉及到原生事件注册只有react事件时，用【e.stopPropagation()】阻止冒泡；2、需要用到【e.nativeEvent.stopImmediatePropagation()】方法。r

react阻止冒泡失败的方法：1、在没有涉及到原生事件注册只有react事件时，用【e.stopPropagation()】阻止冒泡；2、需要用到【e.nativeEvent.stopImmediatePropagation()】方法。

react阻止冒泡失败的方法：

1、在没有涉及到原生事件注册只有react事件时，用e.stopPropagation()阻止冒泡，代码如下：

import React, { Component } from 'react';
import './App.css';
class App extends Component {
  handleClickTestBox = (e) => {
    console.warn('handleClickTestBox: ', e);
  }
  handleClickTestBox2 = (e) => {
    console.warn('handleClickTestBox2: ', e);
  }
  handleClickTestBox3 = (e) => {
    e.stopPropagation();
    console.warn('handleClickTestBox3: ', e);
  }
  render() {
    return (
      <div
        className="test-box"
        onClick={this.handleClickTestBox}
      >
        <div
          onClick={this.handleClickTestBox2}
        >
          <div
            onClick={this.handleClickTestBox3}
          >
          </div>
        </div>
      </div>
    );
  }
}
export default App;

2、当用document.addEventListener注册了原生的事件后，用e.stopPropagation()是不能阻止与document之间的冒泡，这时候需要用到e.nativeEvent.stopImmediatePropagation()方法，代码如下：

import React, { Component } from 'react';
import './App.css';
class App extends Component {
  componentDidMount() {
    document.addEventListener('click', this.handleDocumentClick, false);
  }
  handleDocumentClick = (e) => {
    console.log('handleDocumentClick: ', e);
  }
  handleClickTestBox = (e) => {
    console.warn('handleClickTestBox: ', e);
  }
  handleClickTestBox2 = (e) => {
    console.warn('handleClickTestBox2: ', e);
  }
  handleClickTestBox3 = (e) => {
    // 阻止合成事件的冒泡
    e.stopPropagation();
    // 阻止与原生事件的冒泡
    e.nativeEvent.stopImmediatePropagation();
    console.warn('handleClickTestBox3: ', e);
  }
  render() {
    return (
      <div
        className="test-box"
        onClick={this.handleClickTestBox}
      >
        <div
          onClick={this.handleClickTestBox2}
        >
          <div
            onClick={this.handleClickTestBox3}
          >
          </div>
        </div>
      </div>
    );
  }
}
export default App;

3、阻止合成事件与非合成事件（除了document）之间的冒泡，以上两种方式都不适用，需要用到e.target判断， 代码如下：

import React, { Component } from 'react';
import './App.css';
class App extends Component {
  componentDidMount() {
    document.addEventListener('click', this.handleDocumentClick, false);
    document.body.addEventListener('click', this.handleBodyClick, false);
  }
  handleDocumentClick = (e) => {
    console.log('handleDocumentClick: ', e);
  }
  handleBodyClick = (e) => {
    if (e.target && e.target === document.querySelector('#inner')) {
      return;
    }
    console.log('handleBodyClick: ', e);
  }
  handleClickTestBox = (e) => {
    console.warn('handleClickTestBox: ', e);
  }
  handleClickTestBox2 = (e) => {
    console.warn('handleClickTestBox2: ', e);
  }
  handleClickTestBox3 = (e) => {
    // 阻止合成事件的冒泡
    e.stopPropagation();
    // 阻止与原生事件的冒泡
    e.nativeEvent.stopImmediatePropagation();
    console.warn('handleClickTestBox3: ', e);
  }
  render() {
    return (
      <div
        className="test-box"
        onClick={this.handleClickTestBox}
      >
        <div
          onClick={this.handleClickTestBox2}
        >
          <div
            id="inner"
            onClick={this.handleClickTestBox3}
          >
          </div>
        </div>
      </div>
    );
  }
}
export default App;

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