reactjs Cannot read property 'keys' of undefined

Question

I am learning reactjs through a tutorial and ran into this error. That says \"Cannot read property \'keys\' of undefined\" My code is very minimal so I assume that it has to

Answer 1

I haven't worked with React before, but there are a few things that I see that may be causing your issues. First, React.createClass instead of ReactDOM.createClass. Second, you need to wrap your html in parentheses:

var HelloWorld = React.createClass({
  render: function() {
    return (
      

        
Hello World
        
This is some text>
      
    );
  }
});

This should get it working