Reactjs how to bind value to existing input element

Question

There is a html page contains the following html and include a js file

html:

<input type="text" name="customValue" id="customValue" value="">

js file:

    class Calc extends React.Component {
      constructor() {
        super();
      }

      render() {
        return (99)
      }   
    }
    ReactDOM.render(<Calc />, document.getElementById("customValue"));

So my question is how to set the customValue to 99 using reactjs?

Shivratna Kumar · Accepted Answer · 2019-11-27 09:50:30Z

3

You can do it like this:-

HTML

<div id="rootDiv"></div>

JS

class Calc extends React.Component {
      constructor() {
        super();
      }

      getValue = () => {
          return 99;
      }

      render() {
        const value = this.getValue();

        return (
            <input type="text" name="customValue" id="customValue" value={value}>
        )
      }   
}

ReactDOM.render(<Calc />, document.getElementById("rootDiv"));

answered Nov 27, 2019 at 9:50

Shivratna Kumar

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Shivratna Kumar Over a year ago

If this answers your question, please accept it so that it helps other people as well. Thanks!!

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