hey so I couldnt find an explanation on why the solution given works for when your feeding the function a number through the .length method. The solution code is :

function truncateString(str, num) {

if (str.length > num) {

return str.slice(0, num) + “…”;

} else {

return str;

}

}

I just want to know where the test case is feeding it a number through the length method how is this function getting access to the string?

**Your code so far**

My code so far is:

function truncateString(str, num) {

let x = ‘’;

for (let i = 0; i<num; i++){

```
x+=str[i];
```

}

x+=‘…’;

console.log(x);

return x;

}

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

```
**Your browser information:**
User Agent is: <code>Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36</code>
**Challenge:** Basic Algorithm Scripting - Truncate a String
**Link to the challenge:**
https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-algorithm-scripting/truncate-a-string
```