Hi I be able to solve the problem but need some explaination
why it has to be myVar = --myVar;
instead of
myVar –
the position dose matter and seem conflict with i= i–
Thanks!
Your code so far
let myVar = 11;
// Only change code below this line
myVar = --myVar;
console.log(myVar);
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36
Challenge: Decrement a Number with JavaScript
Link to the challenge:
sanity
2
There’s difference how --
behave, depending if it’s as a prefix (--i
) or suffix (i--
). Not always this difference matters.
--i
decrements i
and returns value which i
has after the decrement
i--
decrements i
, but returns value which i
had before decrement
When used without assignment it might not matter which is used.
let i = 5;
let j = 5;
i--;
--j;
console.log(i); // 4
console.log(j); // 4
However, when --
operator is used for example during assignment, this can matter.
let i = 5;
let j = 5;
i = i--;
j = --j;
console.log(i); // 5
console.log(j); // 4
1 Like
system
Closed
3
This topic was automatically closed 182 days after the last reply. New replies are no longer allowed.