# Introduction In this challenge, we will be working with palindrome strings, which are strings that read the same forwards and backwards. The objective is to complete the `isPalindromeStr` function in the provided JavaScript file to determine whether a given string is a palindrome. The function should handle different types of inputs correctly and return `true` for palindrome strings and `false` for all other cases. Passing all the reference test cases will be considered as the completion of the objective.
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