如何根据反应道具设置为真/假

Question

const [effective_date_status, setEffectiveDateStatus] = React.useState(false)

I'm sending props value from parent to child. I want to set effective_date_status to false if props value is 0 & I want to set to true if props value is 1 .

Can anyone help me with this issue.

Answer 1

You can do as:

const [effective_date_status, setEffectiveDateStatus] = React.useState(
  !!props.value
);

or

const [effective_date_status, setEffectiveDateStatus] = React.useState(
  props.value === 0 ? false : true
);

or Lazy Initialisation

const [effective_date_status, setEffectiveDateStatus] = React.useState(() =>
  props.value === 0 ? false : true
);

Answer 2

first, import use effect hook and then try this

useEffect(()=>{
if(props.value === 1)
setEffectiveDateStatus(true);
else if(props.value === 0)
setEffectiveDateStatus(false);
},[props.value])