我正在尝试使用react构建一个应用程序,但它不会工作,我无法理解为什么。所有东西都使用babelify进行编译,但它在性能期间会抛出异常。错误如下:未捕获的ReferenceError:未定义React。
这是我的组件文件(BigCard.jsx):
}, {
"status": "OK",
"duration": {
"value": 24487,
"text": "6 heures 48 minutes"
},
"distance": {
"value": 129324,
"text": "129 km"
}
我的主文件(main.js):
export var BigCard = React.createClass({
render: function() {
var rows = [];
for (var variable in this.props.pokemon) {
if (this.props.pokemon.hasOwnProperty(variable) && variable.toString() !== 'id' && variable.toString !== 'name' && variable.toString !== 'image' && variable.toString !== 'types') {
rows.push(
<tr>
<td class='mdl-data-table__cell--non-numeric'>
{variable}
</td>
<td>
{this.props.pokemon[variable]}
</td>
</tr>
)
}
}
return (
<div class='mdl-card mdl-shadow--4dp'>
<div class='mdl-card__title'>
<img src={this.props.pokemon.image.src} alt='Pokemon' class='bigCard__img'/>
</div>
<h2 class='mdl-card__title-text'></h2>
<div class='mdl-card__supporting-text'>
<table class='mdl-data-table mdl-js-data-table'>
<thead>
<tr>
<th class='mdl-data-table__cell--non-numeric'>Type</th>
<th class='mdl-data-table__cell--non-numeric'>{this.props.pokemon.types}</th>
</tr>
</thead>
<tbody>
{rows}
</tbody>
</table>
</div>
</div>
);
}
});
我的grunt设置文件(grunfile.js)(我删除了大部分命令,所以它在这里看起来更小,但是这个文件的所有内容都没问题):
import React from 'react';
import ReactDOM from 'react-dom';
import * as DataLogic from './modules/data-logic.js';
import SmallCard from './components/SmallCard.jsx';
import BigCard from './components/BigCard.jsx';
//Test Method
DataLogic.getPokemonById(3).then((result) => {
ReactDOM.render(
<BigCard pokemon={result} />,
document.getElementById('bigCard')
);
}).catch((error) => console.log(`${error} in main.js`));
我的包文件(package.json)(我也删除了大多数引用,但最重要的是那里):
'use strict'
module.exports = function(grunt) {
require('load-grunt-tasks')(grunt);
grunt.initConfig({
pkg: grunt.file.readJSON('./package.json'),
watch: {
babelify: {
files: ['./scripts/**/*.js','./blocks/**/*.js','./scipts/components/*.jsx'],
tasks: ['browserify']
},
},
eslint: {
options: {
format: require('eslint-tap'),
configFile: '.eslintrc'
},
target: './scripts/**/*.js'
},
browserify: {
dist: {
options: {
transform: [
['babelify', {
presets: ['es2015','react']
}]
],
browserifyOptions: {
debug: true
},
exclude: ''
},
files: {
'./build/main.js': ['./scripts/**/*.js','./blocks/**/*.js','./scipts/components/*.jsx']
}
}
}
});
grunt.registerTask('default', ['browserify', 'eslint', 'jade', 'sass', 'cssmin','uglify','watch']);
};
也许,错误是显而易见的,但我无法看到它。你能帮帮我吗?
答案 0 :(得分:7)
在BigCard.jsx中添加import React from 'react'
每个使用react的文件都需要包含import语句。