Created
November 29, 2014 10:33
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Comment Box using React
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<!-- template.html --> | |
<html> | |
<head> | |
<title>Hello React</title> | |
<script src="http://fb.me/react-0.12.1.js"></script> | |
<script src="http://fb.me/JSXTransformer-0.12.1.js"></script> | |
<script src="http://code.jquery.com/jquery-1.10.0.min.js"></script> | |
<script src="http://cdnjs.cloudflare.com/ajax/libs/showdown/0.3.1/showdown.min.js"></script> | |
</head> | |
<body> | |
<div id="content"></div> | |
<script type="text/jsx"> | |
var CommentBox = React.createClass({ | |
loadCommentsFromServer: function() { | |
$.ajax({ | |
url: this.props.url, | |
dataType: 'json', | |
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; | |
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>Commens</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}> | |
{comment.text} | |
</Comment> | |
) | |
}); | |
return ( | |
<div className="commentList"> | |
{commentNodes} | |
</div> | |
); | |
} | |
}); | |
var CommentForm = React.createClass({ | |
handleSubmit: function(e) { | |
e.preventDefault(); | |
var author = this.refs.author.getDOMNode().value.trim(); | |
var text = this.refs.text.getDOMNode().value.trim(); | |
if(!text || !author) { | |
return; | |
} | |
this.props.onCommentSubmit({author: author, text: text}); | |
this.refs.author.getDOMNode().value = ''; | |
this.refs.text.getDOMNode().value = ''; | |
return; | |
}, | |
render: function() { | |
return ( | |
<form className="commentForm" onSubmit={this.handleSubmit}> | |
<input type="text" placeholder="Your name" ref="author" /> | |
<input type="text" placeholder="Say something..." ref="text" /> | |
<input type="submit" value="Post" /> | |
</form> | |
); | |
} | |
}); | |
var converter = new Showdown.converter(); | |
var Comment = React.createClass({ | |
render: function() { | |
var rawMarkup = converter.makeHtml(this.props.children.toString()); | |
return ( | |
<div className="comment"> | |
<h2 className="commentAuthor"> | |
{this.props.author} | |
</h2> | |
<span dangerouslySetInnerHTML={{__html: rawMarkup}} /> | |
</div> | |
); | |
} | |
}); | |
React.render( | |
<CommentBox url="comments.json" pollInterval={2000} />, | |
document.getElementById('content') | |
); | |
</script> | |
</body> | |
</html> | |
<!--comments.js | |
[ | |
{"author": "Pete Hunt", "text": "This is one comment"}, | |
{"author": "Jordan Walke", "text": "This is *another* comment"}, | |
{"author": "Ringo Luo", "text": "This is *yet another* comment"} | |
] | |
--> |
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