Using onClick on Div Elements in React
onClickTo set a listener on a div element in React :
-
Set the property on the div
onClick. -
Every time the div is clicked,
propthe function we passed to will be called. -
We can
event.currentTargetaccess the div through .
const App = () => {
const handleClick = event => {
// 👇️ refers to the div element
console.log(event.currentTarget);
console.log('div clicked');
};
return (
<div>
<div onClick={handleClick}>Hello world</div>
</div>
);
};
export default App;
We set onClickthe property on the div element, so every time the element is clicked, handleClickthe function will be called.
If we need to access
handleClickthe div element within the function, we accesscurrentTargetthe property of the event object.
The event's currentTargetproperty gives us access to the element to which the event listener is attached.
And the target property of the event gives us a reference to the element (possibly a descendant) that triggered the event.
If you want to pass arguments to handleClickthe function, onClickset the property to an inline arrow function.
const App = () => { const handleClick = (event, message) => { // 👇️ refers to the div element console.log(event.currentTarget); console.log(message); console.log('div clicked'); }; return ( <div> <div onClick={event => handleClick(event, 'hello')}>Hello world</div> </div> ); }; export default App;
注意, we pass a function toonClickthe property, rather than the result of a call.
If we call the function when passing it to onClickthe prop, for example onClick={handleClick()}, it will be called immediately when the component mounts.
We can use this approach to set the property on any other element onClick, such as button, spanetc.
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