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good practice - react project - array - switch - update object of array

 

setListing((prevState: any) => {
const todos = [...prevState.listingTodos]
const newTodos = todos.map(todo => {
return {
...todo,
expanded: todo.tabValue === todoValue,
}
})

return {
...prevState,
listingLoading: false,
listingTodos: newTodos,
}
})
// bad practice
const array = [ [ ['Shoaib Mehedi'] ] ]
array.forEach((firstArr) =>{
firstArr.forEach((secondArr) => {
secondArr.forEach((element) => {
console.log(element);
})
})
})
// good practice
const array = [ [ ['Shoaib Mehedi'] ] ]
const getValuesOfNestedArray = (element) => {
if(Array.isArray(element)){
return getValuesOfNestedArray(element[0])
}
return element
}
getValuesOfNestedArray(array)
const {role} = user const components = { ADMIN: AdminUser, EMPLOYEE: EmployeeUser, USER: NormalUser}; const Component = components[role]; return <Componenent />;


Don't Define a Function Inside Render


return (
<button onClick={() => dispatch(ACTION_TO_SEND_DATA)}> // NOTICE HERE
This is a bad example
</button>
)
const submitData = () => dispatch(ACTION_TO_SEND_DATA)
return (
<button onClick={submitData}>
This is a good example
</button>
)

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