How to show a real time calculation in javascript?

[Paul_Wilkins]

@xcfx2888

hey I hve teted my code once again and I calculated the expression manually which is displying currently and its showing answer in a correct way with operator preference ,
seriously I personally never checked it in that way manually because I have not included seperate code for operator preference , but now when I checked it its correctly evaluating the expression

A few rare formulas will evaluate correctly with and without operator preference.

That’s why I like to use 6 + 2 * 3 as you can clearly recognise good evaluation from bad.

With correct evaluation you get:
6 + 2 * 3 => 6 + 6 => 12

With sequential evaluation you get:
6 + 2 * 3 => 8 * 3 => 24

One of those answers is correct, and the other is not. Using the correct evaluation order matters.