Hey!

Not sure if it is of any interest to anybody, but I decided to pass the “Truncate a string” challenge using only one IF and I just succeeded! It took some time to figure out the math formula, but I did! And I’m happy, so I just decided to share it.

```
function truncateString(str, num) {
// Clear out that junk in your trunk
if (num<str.length) {
str = str.slice(0,-str.length+num-Math.min(3,Math.max(0,num*(num-3/Math.abs(num-3)))));
str += "...";
}
return str;
}
```

Just to remember, the challenge was to truncate any *str* argument if its length passed the *num* argument, and append three dots on the string, still respecting the *num* limit.

The tricky part was that if *num* was 3 or less,the three dots append could pass the *num* limit, only the truncated string should match the *num* limit.