问题描述
我有代码，我试图在网页上只使用三个代码进行复制files，index.html，main.js和style.css。我尝试在HTML文件的head标签上加载这些脚本。
I have Codepen code that I'm trying to replicate on an web page using just three files, index.html, main.js, and style.css. I tried loading these scripts on the head tag of HTML file.
<script src="https://npmcdn.com/[email protected]/dist/btib.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.7/react.min.js"></script>
然而，它不起作用。我得到的只是这个错误
However, it's not working. All I get is this error
Uncaught SyntaxError: Unexpected token <
将此反应代码加载到HTML的必要CDN脚本文件是什么？
what are necessary CDN script files to load this react-code to HTML?
推荐答案
你需要使用 babel standalone 脚本来反编译代码，你需要包含的脚本和react-react-dom ，使用它们将起作用：
You need to use babel standalone script to transcompile the code, and you need to include the script for react and react-dom, use these it will work:
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.24.0/babel.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
使用codepen的原因：检查设置/ javascript，在那里你会发现babel被选为 JavaScript预处理器，codepen会自动包含脚本，但要在本地运行这些文件，你需要包含独立脚本。
Reason why it is working with codepen: check the setting/javascript, there you will find the babel is selected as JavaScript Preprocessor, codepen is including the script automatically, but to run these files locally you need to include the standalone script.
更新：
1-您需要定义脚本在你渲染反应代码的div之后，否则它将抛出错误。像这样：
1- You need to define the script after the div in which you are rendering the react code, otherwise it will throw the error. like this:
<body>
<div id="root"></div>
<script type="text/babel" src="pomodoro.js"></script>
</body>
2-使用 ReactDOM.render 而不是 React.render 。
检查工作代码：
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.24.0/babel.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js'></script>
</head>
<body>
<div id='root'></div>
<script type='text/babel'>
class SetTimer extends React.Component{
render(){
return (
<div className="set-timer">work <br/> session
<div className="minus-add">
<button className="setting-button" id="minus-timer" onClick={this.props.minus}>-</button>
<button className="setting-button" id="add-timer" onClick={this.props.add}>+</button>
</div>
</div>
);
}
}
class SetBreak extends React.Component{
render(){
return (
<div className="set-break"> break<br/> session
<div className="minus-add">
<button className="setting-button" id="minus-break" onClick={this.props.minusbreak}>-</button>
<button className="setting-button" id="add-break" onClick={this.props.addbreak}>+</button>
</div>
</div>
);
}
}
const leftPad = (time)=>{
return (time<10)? '0'+time :time
}
const TimerDisplay = (props) => (
<div className="timer-display"><span className="worklabel">Work session time</span><br/>
{props.currentTime}
<div className="breaktime"><span className="breaklabel">break session time</span><br/>{props.breakTime}</div>
</div>
);
// let baseTime= 25;
class App extends React.Component {
constructor(){
super();
this.state = {
baseTime:25,
breakTime:5,
currentTime: moment.duration(25,'minutes'),
timer:null,
startbuttonvisible:true,
pausebuttonvisible:false,
resumebuttonvisible:false,
stopbuttonvisible:false,
}
this.minus =this.minus.bind(this);
this.add =this.add.bind(this);
this.minusbreak =this.minusbreak.bind(this);
this.addbreak =this.addbreak.bind(this);
this.startTimer = this.startTimer.bind(this);
this.pauseTimer = this.pauseTimer.bind(this);
this.resumeTimer = this.resumeTimer.bind(this);
this.stopTimer = this.stopTimer.bind(this);
this.reduceTimer = this.reduceTimer.bind(this);
}
add(){
this.setState({
baseTime:this.state.baseTime+1
});
}
minus(){
this.setState({
baseTime:this.state.baseTime-1
});
}
addbreak(){
this.setState({
breakTime:this.state.breakTime+1
});
}
minusbreak(){
this.setState({
breakTime:this.state.breakTime-1
});
}
startTimer(){
this.setState({
timer: setInterval(this.reduceTimer, 1000),
startbuttonvisible:false,
pausebuttonvisible:true,
stopbuttonvisible:true,
});
}
pauseTimer(){
clearInterval(this.state.timer);
this.setState({
pausebuttonvisible:false,
resumebuttonvisible:true,
});
}
resumeTimer(){
this.setState({
timer: setInterval(this.reduceTimer, 1000),
startbuttonvisible:false,
pausebuttonvisible:true,
stopbuttonvisible:true,
resumebuttonvisible:false,
});
}
stopTimer(){
clearInterval(this.state.timer);
this.setState({
baseTime:25,
timer: null,
startbuttonvisible:true,
pausebuttonvisible:false,
stopbuttonvisible:false,
resumebuttonvisible:false,
});
}
reduceTimer(){
if(this.state.baseTime === 0) return;
const newTime = this.state.baseTime - 1;
this.setState({
baseTime: newTime,
});
}
render() {
return (
<div className="container">
<div className="timebox">
<div className="header">
Pomodoro Clock
</div>
<TimerDisplay currentTime={this.state.baseTime} breakTime={this.state.breakTime}/>
<div id="action-title">
<small>SETTINGS</small>
</div>
<div className="actions">
<SetTimer minus={this.minus} add={this.add}/>
<SetBreak minusbreak={this.minusbreak} addbreak={this.addbreak}/>
</div>
<div className="timer-control">
{this.state.startbuttonvisible ? <button id="start-timer" onClick={this.startTimer}>
START
</button> : null}
{this.state.pausebuttonvisible ? <button id="pause-timer" onClick={this.pauseTimer}>
PAUSE
</button>: null}
{this.state.resumebuttonvisible ? <button id="resume-timer" onClick={this.resumeTimer}>
RESUME
</button>: null}
{this.state.stopbuttonvisible ? <button id="stop-timer" onClick={this.stopTimer}>
STOP
</button>: null}
</div>
</div>
</div>
);
}
}
ReactDOM.render(
<App />,
document.getElementById('root')
);
</script>
</body>
</html>这篇关于如何用cdn在html中加载es6，react，babel代码？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！