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[React] React Fundamentals: transferPropsTo

the transferPropsTo method lets you easily push properties into your components to easily customize attributes.

From last two exmaples, we have BButton adn BHeart set up.

    var BButton = React.createClass({
       render: function() {
           return (
             <a className="btn btn-primary">{this.props.children}</a>
           );
       }
    });

    var BHeart =
            React.createClass({
                render:function(){
                    return <span className="glyphicon glyphicon-heart"></span>
                }
            });

To get more fixability, we don't want button to be 'btn-primary' and icon to be 'glyphicon-hear', we may want something else.

Here we update the code:

    var BButton = React.createClass({
       render: function() {
           return this.transferPropsTo(
             <a className="btn">{this.props.children}</a>
           );
       }
    });

    var BIcon =
            React.createClass({
                render:function(){
                    return this.transferPropsTo(<span className="glyphicon"></span>);
                }
            });

We take away 'btn-primay' and 'glyphicon-heart', let them just be a BButton and BIcon.

Then in the App, we can set whatever we want:

    var App = React.createClass({
        render: function(){
            return (
                    <div>
                     <BButton className="btn-danger">I <BIcon className="glyphicon-fire"></BIcon> React</BButton>
                     <BButton className="btn-warning">I <BIcon className="glyphicon-heart"></BIcon> React</BButton>
                     <BButton className="btn-success">I <BIcon className="glyphicon-home"></BIcon> React</BButton>
                    </div>
            );
        }
    });

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>React Lesson 6: Accessing Child Properties</title>
    <link rel="stylesheet" href="../bower_components/bootstrap/dist/css/bootstrap.min.css"/>
</head>
<body>

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.12.2/react.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.12.2/JSXTransformer.js"></script>
<script type="text/jsx">
    /** @jsx React.DOM */

    var App = React.createClass({
        render: function(){
            return (
                    <div>
                     <BButton  href="javascript:alert('Hello');" className="btn-danger">I <BIcon className="glyphicon-fire"></BIcon> React</BButton>
                     <BButton  href="javascript:alert('Hello');"className="btn-warning">I <BIcon className="glyphicon-heart"></BIcon> React</BButton>
                     <BButton  href="javascript:alert('Hello');" className="btn-success">I <BIcon className="glyphicon-home"></BIcon> React</BButton>
                    </div>
            );
        }
    });

    var BButton = React.createClass({
       render: function() {
           return this.transferPropsTo(
             <a className="btn">{this.props.children}</a>
           );
       }
    });

    var BIcon =
            React.createClass({
                render:function(){
                    return this.transferPropsTo(<span className="glyphicon"></span>);
                }
            });


    React.render(<App />, document.body);
</script>
</body>
</html>

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原文地址：https://www.cnblogs.com/Answer1215/p/4363447.html