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@nabeen
Created October 11, 2016 07:58
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react_tutorial
<!-- index.html -->
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>React Tutorial</title>
<script src="https://unpkg.com/[email protected]/dist/react.js"></script>
<script src="https://unpkg.com/[email protected]/dist/react-dom.js"></script>
<script src="https://unpkg.com/[email protected]/browser.min.js"></script>
<script src="https://unpkg.com/[email protected]/dist/jquery.min.js"></script>
<script src="https://unpkg.com/[email protected]/dist/remarkable.min.js"></script>
</head>
<body>
<div id="content"></div>
<script type="text/babel">
var data = [
{id: 1, author: "Pete Hunts", text: "This is one comment"},
{id: 2, author: "Jordan Walke", text: "This is *another* comment"}
];
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;
// 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) {
this.setState({data: comments});
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>
);
}
});
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>
);
}
});
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) {
e.preventDefault();
var author = this.state.author.trim();
var text = this.state.text.trim();
if (!text || !author) {
return;
}
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>
);
}
});
var Comment = React.createClass({
rawMarkup: function() {
var md = new Remarkable();
var rawMarkup = md.render(this.props.children.toString());
return { __html: rawMarkup };
},
render: function() {
return (
<div className="comment">
<h2 className="commentAuthor">
{this.props.author}
</h2>
<span dangerouslySetInnerHTML={this.rawMarkup()} />
</div>
);
}
});
ReactDOM.render(
<CommentBox url="/api/comments" pollInterval={2000} />,
document.getElementById('content')
);
</script>
</body>
</html>
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