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How to pass arguments to function in functional component in React

How can I pass arguments to a function in functional component? As far as I know, creating function in jsx is not good practice right?

function MyComponent(props) {
  function handleChange(event, data){
    console.log(event.target.value);
    console.log(data);
  }
  return <button onClick={handleClick(??)} value='Foo'>Click</button>
}
like image 490
Nodir Nasirov Avatar asked Sep 19 '25 21:09

Nodir Nasirov


2 Answers

This will work

function MyComponent(props) {
  function handleChange(event, data){
    console.log(event.target.value);
    console.log(data)

  }
  return <button onClick={(event) => handleChange(event, 'Some Custom Value')} value='Foo'>Click</button>
}

Or if you only want to send the data property, you could do something like

function MyComponent(props) {
  function handleChange(data){
    console.log(data)

  }
  return <button onClick={(event) => handleChange('Some Custom Value')} value='Foo'>Click</button>
}

like image 72
Prakash Kandel Avatar answered Sep 22 '25 10:09

Prakash Kandel


You can keep function outside of functional component,

MyComponent = (props) => {
  return <button onClick={(event, props.data) => handleChange(event, props.data)} value='Foo'>Click</button>
}
function handleChange(event, data){
  console.log(event.target.value);
  console.log(data);
}
like image 26
Avinash Avatar answered Sep 22 '25 12:09

Avinash