Exercises:
JS Functions

1. Write a JavaScript function that returns a passed string with letters in alphabetical order. Go to the editor
Example string : 'webmaster'
Expected Output : 'abeemrstw'
Assume punctuation and numbers symbols are not included in the passed string.


2. Write a JavaScript function that accepts a string as a parameter and converts the first letter of each word of the string in upper case. Go to the editor
Example string : 'the quick brown fox'
Expected Output : 'The Quick Brown Fox '


3. Write a JavaScript function that accepts a string as a parameter and find the longest word within the string. Go to the editor
Example string : 'Web Development Tutorial'
Expected Output : 'Development'


4. Write a JavaScript function that accepts a string as a parameter and counts the number of vowels within the string. Go to the editor
Note : As the letter 'y' can be regarded as both a vowel and a consonant, we do not count 'y' as vowel here.
Example string : 'The quick brown fox'
Expected Output : 5


5. Write a JavaScript function that accepts a number as a parameter and check the number is prime or not. Go to the editor
Note : A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself.

JS Objects

6.
Write a JavaScript program to display the reading status (i.e. display book name, author name and reading status) of the following books. Go to the editor

var library = [
   {
       author: 'Bill Gates',
       title: 'The Road Ahead',
       readingStatus: true
   },
   {
       author: 'Steve Jobs',
       title: 'Walter Isaacson',
       readingStatus: true
   },
   {
       author: 'Suzanne Collins',
       title:  'Mockingjay: The Final Book of The Hunger Games',
       readingStatus: false
   }];

Validation

1. Write a JavaScript function to validate whether a given value type is boolean or not.

2. Write a JavaScript function to validate whether a given value type is NaN or not.

3. Write a JavaScript function to validate whether a given value type is null or not.

4. Write a JavaScript function to validate whether a given value is number or not.

5. Write a JavaScript function to validate whether a given value is object or not.