如何比较 JavaScript (React-Native) 中的两个动态变量？

Question

I am trying to compare these two variables: res_id; and rest_id;

likes this:

if(res_id == rest_id){
console.log("THESE VALUES ARE THE SAME", rest_id);
}

whenever any of their values are the same I want to print something but it doesn't work using the above statement.

Remember they are dynamic.

console.log() :

    [14:21:08] I | ReactNativeJS ▶︎ 'PRINT THE REST-ID:', '1'
                             └ 'PRINT THE RES-ID:', undefined

[14:21:08] I | ReactNativeJS ▶︎ 'PRINT THE REST-ID:', 'Aura1'
                             └ 'PRINT THE RES-ID:', undefined

[14:21:08] I | ReactNativeJS ▶︎ 'PRINT THE REST-ID:', 'jeta1'
                             └ 'PRINT THE RES-ID:', undefined

[14:21:08] I | ReactNativeJS ▶︎ 'PRINT THE REST-ID:', undefined
                             └ 'PRINT THE RES-ID:', '1'

[14:21:08] I | ReactNativeJS ▶︎ 'PRINT THE REST-ID:', undefined
                             └ 'PRINT THE RES-ID:', '10'

Answer 1

You've provided no view of your overall function, but i'm assuming it's a react component in which case you can use useEffect to perform an action when any of those values change.

useEffect((), {
    if (res_id === rest_id) {
     console.log('they are equal')
    }
    else {
      console.log('they are not equal')
    }
  }, [res_id, rest_id])