[英]React.createClass is not a function, may be webpack compling error
I used webpack to set react envirement, and run the code using this line: 我使用webpack设置反应环境,并使用以下代码运行代码:
webpack -d && webpack-dev-server --content-base src/ --inline --hot --port 1234
The cmd runs some builds, and than shows the line: 该cmd运行一些构建,然后显示以下行:
webpack: Compiled successfully.
instead of : 代替 :
webpack: bundle is now VALID
like I saw in the example. 就像我在示例中看到的那样。
and than it says on the browser console: 并在浏览器控制台上显示:
Uncaught TypeError: React.createClass is not a function
What could it be? 会是什么呢?
my dependencies: 我的依赖:
"dependencies": {
"react": "^16.0.0",
"react-dom": "^16.0.0"
},
"devDependencies": {
"babel-core": "^6.26.0",
"babel-loader": "^7.1.2",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"webpack": "^3.8.1",
"webpack-dev-server": "^2.9.4"
}
my code: 我的代码:
var React = require('react');
var ReactDOM = require('react-dom');
// Create component
var TodoComponent = React.createClass({
render: function () {
return(
<h1>Hello!!</h1>
);
}
});
// put component into html page
ReactDOM.render(<TodoComponent />, document.getElementById('todo-container'));
By the way, this is my first question here, so please forgive me for starters mistakes.. ;) 顺便说一句,这是我在这里的第一个问题,所以请原谅我的入门错误。
In version 16.x of React, React.createClass
has been moved to its own package named create-react-class
. 在React的React.createClass
版本中, React.createClass
已移至其自己的名为create-react-class
的包中。
Documentation here: https://reactjs.org/blog/2017/09/26/react-v16.0.html#packaging 此处的文档: https : //reactjs.org/blog/2017/09/26/react-v16.0.html#packaging
So, you should do npm i create-react-class --save
. 因此,您应该执行npm i create-react-class --save
。
And then adjust your code: 然后调整您的代码:
var React = require('react');
var ReactDOM = require('react-dom');
var createClass = require('create-react-class');
// Create component
var TodoComponent = createClass({
render: function () {
return(
<h1>Hello!!</h1>
);
}
});
// put component into html page
ReactDOM.render(<TodoComponent />, document.getElementById('todo-container'));
Otherwise, you should use the ES6 class
Component, which is more idiomatic in react: 否则,您应该使用ES6 class
Component,它在React中更加惯用:
var React = require('react');
var ReactDOM = require('react-dom');
// Create component
class TodoComponent extends React.Component {
render() {
return(
<h1>Hello!!</h1>
);
}
}
// put component into html page
ReactDOM.render(<TodoComponent />, document.getElementById('todo-container'));
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.