我已通过下面的react
安装并导入了react-dom
和System.config
,但我仍然会收到以下错误:
未捕获(在承诺中)错误:意外的令牌<(...)
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>ES2015 Module Example</title>
</head>
<body>
<script src="lib/system.js"></script>
<script>
System.config({
"baseURL": "src",
// Set defaultJSExtensions to true so you don't have to use .js extension when importing the es6 module.
"defaultJSExtensions": true,
// 'plugin-babel' or 'traceur' or 'typescript'
transpiler: 'traceur',
map: {
'react': './node_modules/react/dist/react.min.js',
'react-dom': './node_modules/react-dom/dist/react-dom.min.js',
'traceur': './lib/traceur.min.js',
'plugin-babel': './lib/plugin-babel/plugin-babel.js',
'systemjs-babel-build': './lib/plugin-babel/systemjs-babel-browser.js'
},
});
System.import("app.js");
</script>
</body>
<div id="example"></div>
</html>
app.js:
import React from 'react';
import ReactDOM from 'react-dom';
var Hello = React.createClass({
render: function() {
return <h1>Hello {this.props.name}</h1>;
}
});
ReactDOM.render(
<Hello name="World" />,
document.getElementById('example')
);
任何想法我还需要配置什么?
答案 0 :(得分:0)
browserify是最好的解决方案(用于生产和开发) - 对我来说:
AddressService
吞:
npm install --save-dev babel-preset-react
对于使用SystemJS的非生产(痛苦地缓慢):
var gulp = require('gulp');
var browserify = require('browserify');
var babelify = require('babelify');
var source = require('vinyl-source-stream');
var buffer = require('vinyl-buffer');
var uglify = require('gulp-uglify');
var sourcemaps = require('gulp-sourcemaps');
var livereload = require('gulp-livereload');
gulp.task('build', function() {
// app.js is your main JS file with all your module inclusions
return browserify({entries: 'src/app.js', debug: true})
.transform("babelify", { presets: ["es2015", "react"] })
.bundle()
.pipe(source('compile.min.js'))
.pipe(buffer())
.pipe(sourcemaps.init())
.pipe(uglify())
.pipe(sourcemaps.write('./maps'))
.pipe(gulp.dest('js'))
.pipe(livereload());
});
gulp.task('default', ['build']);
你仍然可以使用gulp进行开发。只需将其添加到gulpfile:
<!DOCTYPE html>
<script src="https://jspm.io/system@0.19.js"></script>
<script>
System.config({
transpiler: 'babel',
babelOptions: {}
});
System.import('./main.js');
</script>
这使您免于其他繁琐的开发工作流程listed。
答案 1 :(得分:-1)
SDK
通常出现在html5应用程序中,当服务器配置为返回Unexpected token <
而不是404页面的内容时(因此在动态路由上按f5仍然有效)。检查浏览器开发人员控制台中的网络面板,然后查看使用html内容提供的js文件。