Cloning ReactElements

Note: cloneWithProps is deprecated. Use React.cloneElement instead.

In rare situations, you may want to create a copy of a React element with different props from those of the original element. One example is cloning the elements passed into this.props.children and rendering them with different props:

var cloneWithProps = require('react-addons-clone-with-props');
 
var _makeBlue = function(element) {
  return cloneWithProps(element, {style: {color: 'blue'}});
};
 
var Blue = React.createClass({
  render: function() {
    var blueChildren = React.Children.map(this.props.children, _makeBlue);
    return <div>{blueChildren}</div>;
  }
});
 
ReactDOM.render(
  <Blue>
    <p>This text is blue.</p>
  </Blue>,
  document.getElementById('container')
);

cloneWithProps does not transfer key or ref to the cloned element. className and style props are automatically merged.

Links:

https://facebook.github.io/react/docs/clone-with-props.html

doc_React

2025-01-10 15:47:30

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