Basic Algorithm Scripting - Truncate a String

JavaScript
1

Tell us what’s happening:
I am trying my best to understand what is going on, following in my example of code, before checking typeof I was getting all test passed expect 2, by putting typeof all test failed expect 2.

I am confused because I do not want to use typeof because it if num is not a numeric, it should go straight to else which is to print string as it is.

What am I missing? One side I am addicted to doing these all day and one side I get stuck in these small things

Your code so far

function truncateString(str, num) {
  if(typeof num == 'Number' && num > 0){
    console.log(`${str.slice(0,num)}...`)
    return `${str.slice(0,num)}...`
  }else{
    console.log(num,"><")
    return str
  }
}

truncateString("A-tisket a-tasket A green and yellow basket", 8);

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Challenge: Basic Algorithm Scripting - Truncate a String

Link to the challenge:

2

Why do you need a typeof? The instructions tell you the input must be a number.

3

I wanted to check if it is a number as a extra extra test because it wasn’t passing into else statement.

4

That means that your condition is wrong, not that you mush use a typeof

5

But if I console.log(num) and when it comes to print

A-tisket a-tasket A green and yellow basket…

num is 43

but in the tests it says

truncateString("A-tisket a-tasket A green and yellow basket", "A-tisket a-tasket A green and yellow basket".length) should return the string A-tisket a-tasket A green and yellow basket .

I wonder why is wrong with my condition, can u tell me without pointing out why is it wrong?

6

This is a number. The second argument is always a number.

This doesn’t agree with the instructions. What part of the instructions should this be handling?