alexbrohman

# JavaScript Coding Exemplar: 
### Question 1

The issue with the function is that when the string begins with 'superman', the indexOf is 0, which is a 'falsy' value. The if statement returns false for this 0 and because of this, the error is thrown. 

The indexOf for a string without 'superman'  is -1, so a better function in this case would be: 

```
const validateString = (str) => {
    if(str.toLowerCase().indexOf('superman') === -1)