Using onClick on Div Elements in React
onClick
To set a listener on a div element in React :
-
Set the property on the div
onClick
. -
Every time the div is clicked,
prop
the function we passed to will be called. -
We can
event.currentTarget
access 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 onClick
the property on the div element, so every time the element is clicked, handleClick
the function will be called.
If we need to access
handleClick
the div element within the function, we accesscurrentTarget
the property of the event object.
The event's currentTarget
property 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 handleClick
the function, onClick
set 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 toonClick
the property, rather than the result of a call.
If we call the function when passing it to onClick
the 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
, span
etc.
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