React Tutorial(0.14)

Client

本地server跑起来 3000端口

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="./build/react.min.js"></script>
<script src="./build/react-dom.min.js"></script>
<script src="./babel.js"></script>
<script src="./jquery.2.1.1.min.js"></script>
<script src="./marked.min.js"></script>
<style>
</style>

</head>
<body>
<div id="content"></div>
<script type="text/babel">
//1
var Comment = React.createClass({
rawMarkup: function() {
var rawMarkup = marked(this.props.children.toString(), {sanitize: true});
return { __html: rawMarkup };
},
render: function() {
return (
<div className="comment">
<h2 className="commentAuthor">
{this.props.author}
</h2>
<span dangerouslySetInnerHTML={this.rawMarkup()} />
</div>
);
}
});
//2
var CommentBox = React.createClass({
loadCommentsFromServer: function() {
$.ajax({
url: this.props.url,
dataType: 'json',
cache: false,
success: function(data) {
this.setState({data: data});
}.bind(this),
error: function(xhr, status, err) {
console.error(this.props.url, status, err.toString());
}.bind(this)
});
},
handleCommentSubmit: function(comment) {
var comments = this.state.data;
console.log('sasdasdasd');
// Optimistically set an id on the new comment. It will be replaced by an
// id generated by the server. In a production application you would likely
// not use Date.now() for this and would have a more robust system in place.
comment.id = Date.now();
var newComments = comments.concat([comment]);
this.setState({data: newComments});
$.ajax({
url: this.props.url,
dataType: 'json',
type: 'POST',
data: comment,
success: function(data) {
this.setState({data: data});
}.bind(this),
error: function(xhr, status, err) {
console.error(this.props.url, status, err.toString());
}.bind(this)
});
},
getInitialState: function() {
return {data: []};
},
componentDidMount: function() {
this.loadCommentsFromServer();
setInterval(this.loadCommentsFromServer, this.props.pollInterval);
},
render: function() {
return (
<div className="commentBox">
<h1>Comments</h1>
<CommentList data={this.state.data} />
<CommentForm onCommentSubmit={this.handleCommentSubmit} />
</div>
);
}
});
//3
var CommentList = React.createClass({
render: function() {
var commentNodes = this.props.data.map(function(comment) {
return (
<Comment author={comment.author} key={comment.id}>
{comment.text}
</Comment>
);
});
return (
<div className="commentList">
{commentNodes}
</div>
);
}
});
//4
var CommentForm = React.createClass({
getInitialState: function() {
return {author: '', text: ''};
},
handleAuthorChange: function(e) {
this.setState({author: e.target.value});
},
handleTextChange: function(e) {
this.setState({text: e.target.value});
},
handleSubmit: function(e) {
console.log('liuyangzuo')
e.preventDefault();
var author = this.state.author.trim();
var text = this.state.text.trim();
if (!text || !author) {
return;
}
// TODO: send request to the server
this.props.onCommentSubmit({author: author, text: text});
this.setState({author: '', text: ''});
},
render: function() {
return (
<form className="commentForm" onSubmit={this.handleSubmit}>
<input
type="text"
placeholder="Your name"
value={this.state.author}
onChange={this.handleAuthorChange}
/>
<input
type="text"
placeholder="Say something..."
value={this.state.text}
onChange={this.handleTextChange}
/>
<input type="submit" value="Post" />
</form>
);
}
});
ReactDOM.render(
<CommentBox url="http://localhost:8080" pollInterval={2000} />,
document.getElementById('content')
);
</script>

</body>
</html>

Server

监听8080端口

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var express = require("express");
var bodyParser = require("body-parser");
var cors = require("cors");
var app = express();
// app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cors());


var obj = [
{id: 1, author: "于洪洋", text: "是我"},
{id: 2, author: "于四蛋", text: "就是我"},
{id: 3, author: "于四驴", text: "一定是我"}
];
var i = 10;
/*
setInterval(function(){
i++
obj.push({ id:i,author:"于"+i,text:"是我" +i });
},1000)
*/

var postData = [];
app.get('/',function(req,res){
res.json(obj);
})
app.post('/',function(req,res){
console.log(req.body)
})
app.listen(8080);