Dynamically render a component inside a another component in React

Question

I tried to dynamically pass a reference to a class to a container and render it.

    class Test extends React.Component{
        render() {
           return <div>Test</div>
        }
    }

    class HelloWidget extends React.Component{
           constructor(props) {
              super(props);

              this.state = {
                  child: Test
              };
           }

           render() {
               return <div>{this.state.child}</div>;
          }
    }

    React.render(<HelloWidget />, document.getElementById('container'));

See it at jsfiddle: https://jsfiddle.net/coolshare/jwm6k66c/2720/

It did not render anything...

Any suggestion?

thanks

Jayesh Nayak · Accepted Answer · 2017-05-17 06:10:14Z

2

You can dynamically change the state value in HelloWidget component and that would reflect in Test Component. Here is the code:

    class Test extends React.Component{

            render() {
        return <div>{this.props.child}</div>
    }
        }
  class HelloWidget extends React.Component{
    constructor(props) {
      super(props);

      this.state = {
            child: "Test"
      };
    }

    render() {
        return <div>
            <Test child={this.state.child}/>
        </div>;
    }
  }

  React.render(<HelloWidget />, document.getElementById('container'));

Here is a working fiddle link: https://jsfiddle.net/jayesh24/1uvpg5ej/

answered May 17, 2017 at 6:10

Jayesh Nayak

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Comments

Mayank Shukla · Accepted Answer · 2017-05-17 06:05:02Z

1

You need to use React.createElement to create the new react element.

Like this:

render() {
    return <div>hello {React.createElement(this.state.child)}</div>;
}

Check the working fiddle.

answered May 17, 2017 at 6:05

Mayank Shukla

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1 Comment

Jayesh Nayak Over a year ago

@MarkQian If you find the answer useful please mark it as correct.

Jude Niroshan · Accepted Answer · 2017-05-17 06:01:57Z

0

Use the Directive of your Test inside the constructor to create that component when you are assigning

      this.state = {
            child: <Test />
      };

answered May 17, 2017 at 6:01

Jude Niroshan

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