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March 4, 2015 12:28
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React Tutorial / example.js https://github.com/reactjs/react-tutorial/blob/6c40ea64c384ac18a9048f29424d79cb507f99fe/public/scripts/example.js
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/** | |
* This file provided by Facebook is for non-commercial testing and evaluation purposes only. | |
* Facebook reserves all rights not expressly granted. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
*/ | |
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> | |
); | |
} | |
}); | |
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; | |
comments.push(comment); | |
this.setState({data: comments}, function() { | |
// `setState` accepts a callback. To avoid (improbable) race condition, | |
// `we'll send the ajax request right after we optimistically set the new | |
// `state. | |
$.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> | |
); | |
} | |
}); | |
var CommentList = React.createClass({ | |
render: function() { | |
var commentNodes = this.props.data.map(function(comment, index) { | |
return ( | |
// `key` is a React-specific concept and is not mandatory for the | |
// purpose of this tutorial. if you're curious, see more here: | |
// http://facebook.github.io/react/docs/multiple-components.html#dynamic-children | |
<Comment author={comment.author} key={index}> | |
{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 = ''; | |
}, | |
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> | |
); | |
} | |
}); | |
React.render( | |
<CommentBox url="comments.json" pollInterval={2000} />, | |
document.getElementById('content') | |
); |
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