Why doesn't this.props.children.map work?

Question

I have written this code in several other components but can't seem to understand why this isn't working.

{     this.props.children.map(function(child) {         return <li>{child}</li>     }) } 

Any help would be greatly appreciated!

Answer 1

this.props.children is an opaque data structure. It can be either an array or a single element. In your case, this.props.children is probably a single element, which is why the .map() method is undefined.

You should use the React.Children API when manipulating the children prop.

See also Type of the Children props.

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