React-使用Javascript的组件 [英] React - Components using Javascript

问题描述

我试图弄清楚如何响应警告，以使用javascript类在我的MERN应用中创建组件。

I am trying to figure out how to respond to the warning in react to use javascript classes to create components in my MERN app.

警告说：

Warning: Accessing createClass via the main React package is deprecated, and will be removed in React v16.0. Use a plain JavaScript class instead. If you're not yet ready to migrate, create-react-class v15.* is available on npm as a temporary, drop-in replacement. For more info see[ \[this link\][1]

该消息中的链接说：

// After (15.5)
var React = require('react');
var createReactClass = require('create-react-class');

var Component = createReactClass({
  mixins: [MixinA],
  render() {
    return <Child />;
  }
});

我正在使用React v 15.5.4

I am using react v 15.5.4

在我的应用程序中，我尝试如下更改组件：

In my app, I have tried to change my components as follows:

import React from 'react';
import ReactDOM from 'react-dom';
import { Button } from 'react-bootstrap';

var createReactClass = require('create-react-class');


var GreeterForm = createReactClass({
  onFormSubmit: function(e) {
    e.preventDefault();

但是，警告仍然存在，有人能看出我做错了什么吗，如何实现定义组件的新方法？

However, the warning persists. Can anyone see what I have done wrong? How do I implement the new approach to defining components?

推荐答案

这是我在React中创建类的方法：

This is what I would do to create a class in React:

import React, { Component } from 'react';

class GreeterForm extends Component {
    onFormSubmit = (e) => {
        e.preventDefault();
        //do stuff
    }
    render() {
        return (<Child onFormSubmit={this.onFormSubmit} />)
    }
}

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