/Javascript/React/React should write method in a functional component or outside functional component

React should write method in a functional component or outside functional component

In most cases you should declare the functions outside of the component function
so you declare them only once and always reuse the same reference. When you 
declare the function inside, every time the component is rendered the function 
will be defined again.

There are cases in which you will need to define a function inside the component
to, for example, assign it as an event handler that behaves differently based on
the properties of the component. But still you could define the function outside
Ball and bind it with the properties, making the code much cleaner and making 
the update or draw functions reusable.

Source: stackoverflow.com

Similar codes

0 vote339 views1 answer
React linking to documents
Javascript React
2 votes329 views2 answers
How to send form data from react to express
Javascript React
0 vote271 views1 answer
React native change image color
Javascript React
1 vote319 views1 answer
How to position View absolute react native
Javascript React
0 vote318 views1 answer
If statement in react native
Javascript React
1 vote312 views1 answer
React native get last element of array
Javascript React
0 vote313 views2 answers
React native share image
Javascript React
3 votes344 views2 answers
Use onchange with react select
Javascript React
3 votes300 views2 answers
React native pm ERR! code EINTEGRITY
Javascript React
12 votes332 views3 answers
Vs code emmet for html in react
Javascript React