Here are some JavaScript coding interview questions along with their solutions:

1. Reverse a String:

Question: Write a function to reverse a string.

2. Find the Factorial of a Number:

Question: Write a function to calculate the factorial of a given number.

3.Check for Palindrome:

Question: Write a function to check if a string is a palindrome.

4. Find the Longest Word:

Question: Write a function to find the longest word in a string.

5. Fibonacci Series:

Question: Write a function to generate Fibonacci series up to a given number of terms.