Javascript 如何使用babel编译用es6编写的react文件?
您能告诉我如何使用babel编译用es6编写的react文件吗 我试过这样做 我的文件Javascript 如何使用babel编译用es6编写的react文件?,javascript,reactjs,ecmascript-6,babeljs,Javascript,Reactjs,Ecmascript 6,Babeljs,您能告诉我如何使用babel编译用es6编写的react文件吗 我试过这样做 我的文件 import React from 'react'; import { render } from 'react-dom'; class Abc extends React.Components{ render(){ return ( <div>dddd</div> ) } } render(<Abc
import React from 'react';
import { render } from 'react-dom';
class Abc extends React.Components{
render(){
return (
<div>dddd</div>
)
}
}
render(<Abc />, document.getElementById('root'));
当我尝试npm运行构建时
它将生成一个新文件
import React from 'react';
import { render } from 'react-dom';
class Abc extends React.Components {
render() {
return React.createElement(
'div',
null,
'dddd'
);
}
}
render(React.createElement(Abc, null), document.getElementById('root'));
它是转换的react代码,不是es6代码为什么?
你能告诉我如何转换es6代码吗
更新
当我使用这个解决方案时,它给出了更新代码
'use strict';
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _react = require('react');
var _react2 = _interopRequireDefault(_react);
var _reactDom = require('react-dom');
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
var Abc = function (_React$Components) {
_inherits(Abc, _React$Components);
function Abc() {
_classCallCheck(this, Abc);
return _possibleConstructorReturn(this, (Abc.__proto__ || Object.getPrototypeOf(Abc)).apply(this, arguments));
}
_createClass(Abc, [{
key: 'render',
value: function render() {
return _react2.default.createElement(
'div',
null,
'dddd'
);
}
}]);
return Abc;
}(_react2.default.Components);
(0, _reactDom.render)(_react2.default.createElement(Abc, null), document.getElementById('root'));
您缺少es2015预设。请执行以下操作:
- 使用安装es2015预设
npm install --save-dev babel-preset-es2015
- 编辑生成脚本以:
"build": "babel reacfiles/app.js --out-file build/app.js"
- 创建.babelrc文件(并在其中定义预设):
{ "presets": ["es2015", "react"] }
自从ReactJS v0.13.0 Beta 1发布以来,您就可以为React组件使用ECMAScript 6的功能。我不明白您在ES6上遇到问题的确切原因。您遇到的错误是什么?我能够生成文件,但它没有加载到服务器中。:(类ABC扩展React.Component(非Components)
"build": "babel reacfiles/app.js --out-file build/app.js"
{ "presets": ["es2015", "react"] }