I am trying to render a paragraph as soon as the you click the button.
Here is my code.
import React, { Component } from 'react';
class App extends Component {
constructor() {
super();
this.createText = this.createText.bind(this);
}
createText() {
return(
<p>hello friend</p>
)
}
render() {
return (
<div className="App">
<button onClick={this.createText}>Click</button>
</div>
);
}
}
export default App;
Here I am trying to render "hello friend" when the button is clicked. But is not working.
This is not the correct way because createText
is a event handler it will not render the element, what you need is "Conditional rendering of elements".
Check Docs for more details Conditional Rendering .
Steps:
1- Use a state variable with initial value false
.
2- Onclick of button update the value to true
.
3- Use that state value for conditional rendering.
Working Code:
class App extends React.Component { constructor() { super(); this.state = { isShow: false } this.createText = this.createText.bind(this); } createText() { this.setState({ isShow: true }) } render() { return ( <div className="App"> <button onClick={this.createText}>Click</button> {this.state.isShow && <p>Hello World!!!</p>} </div> ); } } ReactDOM.render(<App />, document.getElementById('app'))
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script> <div id='app' />
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