confusion about a string

[TimeKeyRoll]

Hi! i just am confused about the string which patrick has mentioned in lesson 5.

console.log(`Current Fav no : ${currentfavoriteNumber.toString()}`);

Above string is mentioned by patrick.

And i tried with the below string..

console.log(`current fav no is : ${currentfavoriteNumber}`);

Both are giving the same answers. And working great. so what makes the difference of us using string keyword in that.

could anyone help me to explain?

Thankyou

[iangechuki]

When we get favouriteNumber it comes in form of a bigNumber .Ethereum uses BigNumbers because in Javascript as the number gets really big it gets to a point where you start experiencing rounding errors.To avoid this BigNumbers are used as the can hold a big number of any magnitude.Therefore to convert from BigNumber to string we use number.toString().You will see Patrick using this in later lessons especially when doing tests.You can read more about this here

[TimeKeyRoll]

Hi! I understand what you just said but what i dont understand is its not used in these mentioned two lines which are mentioned below in the screenshot. lines are marked as red and yellow.

if you could check that would be apprecaited.Thankyou