I created a simple function to calcluate the average of 3 numbers:
let calcAverage = (v1,v2,v3) =>{
calcAverage = v1+v2+v3 / 3;
return calcAverage
}
const d1 = calcAverage(44, 23,71)
const k1 = calcAverage(44, 23,71)
console.log(d1)
if you comment out: const k1 = calcAverage(44, 23,71)then you will notice that the const d1 = calcAverage(44, 23,71)works, but why does it say 'Uncaught TypeError: calcAverage is not a function for this line of code: const k1 = calcAverage(44, 23,71)? this doesn't make any sense to me. how do I make both of them work? and why is it even saying that calcAverage is not a function i the first place?
Because you reassigned calcAverage in this line
calcAverage = v1+v2+v3 / 3;
which made calcAverage a number value instead of a function
why don't you just return this calculations immediately
return v1+v2+v3 / 3;
When calling calcAverage for the first time, it indeed is a function. However, you overwrite it within the function itself to be a number:
calcAverage = v1+v2+v3 / 3;
Simply change the variable name inside the function to make it work as you expect:
const calcAverage = (v1,v2,v3) =>{
const result = v1+v2+v3 / 3;
return result;
}
const d1 = calcAverage(44, 23,71);
const k1 = calcAverage(44, 23,71);
console.log(d1);
Update:
To clearly see the issue, you can log out the type of calcAverage for each of the function calls:
let calcAverage = (v1,v2,v3) =>{
calcAverage = v1+v2+v3 / 3;
return calcAverage;
}
console.log("Type before first call: ", typeof calcAverage);
const d1 = calcAverage(44, 23,71);
console.log("Type before second call: ", typeof calcAverage);
const k1 = calcAverage(44, 23,71);This nicely shows the advantage of using const over using let for actual constants, by the way. If you would have declared calcAverage as a const, you wouldn't have run into this issue.
i found a variable inside the function with the same function name . so when you call calAverage second time it is not a function instead it is a resultof of some calculation. also i made function as a constant one
const calcAverage = (v1, v2, v3) =>
{
let calcAverageVal = v1 + v2 + v3 / 3
return calcAverageVal
}
const d1 = calcAverage(44, 23, 71)
const k1 = calcAverage(44, 23, 71)
console.log(d1)