How can JSX handle events?

2023-10-05 / 资讯 / 121 阅读

  JSX can handle events by using event handlers. In JSX, event handlers are specified as attributes on the elements. These event handler attributes are written in camel case, such as onClick, onChange, etc.

  Here's an example of how JSX handles events:

  jsx

  import React from 'react';

  function handleClick() {

   console.log('Button clicked!');

  }

  function App() {

   return (

  

   Click me

  

   );

  }

  In the example above, an onClick event handler is added to the button element. When the button is clicked, the handleClick function is invoked and the console logs 'Button clicked!' to the browser console.

  JSX also supports passing arguments to event handlers. You can accomplish this by defining an arrow function inside the event handler attribute.

  jsx

  import React from 'react';

  function handleButtonClick(arg) {

   console.log('Button clicked with argument:', arg);

  }

  function App() {

   return (

  

   handleButtonClick('Hello')}>Click me

  

   );

  }

  In this example, when the button is clicked, the handleButtonClick function is invoked with the argument 'Hello'.

  It's important to note that in JSX, event handlers are registered using the synthetic event system provided by React. This system abstracts away the differences between browsers and provides a consistent interface for handling events.

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