react-forms Flashcards
1
Q
What are controlled components?
A
An input form element whose value is controlled by React (making value=this.state.value–the state will always be in control)
2
Q
What two props must you pass to an input for it to be “controlled”?
A
value, onChange
3
Q
What Array method is commonly used to create a list of React elements?
A
.map
4
Q
What is the best value to use as a “key” prop when rendering lists?
A
key is to use a string that uniquely identifies a list item among its siblings. Most often you would use IDs from your data as keys:
