Regular Expression Exercises

RegEx Documentation

1. Write a JavaScript program to test the first character of a string is uppercase or not.

2. Write a JavaScript program to check a credit card number.

3. Write a pattern that matches e-mail addresses.

The personal information part contains the following ASCII characters.

Uppercase (A-Z) and lowercase (a-z) English letters. Digits (0-9). Characters ! # $ % & ' * + - / = ? ^ _ ` { | } ~ Character . ( period, dot or fullstop) provided that it is not the first or last character and it will not come one after the other.

4. Write a JavaScript program to search a date within a string.

5. Write a JavaScript program that work as a trim function (string) using regular expression.

6. Write a JavaScript program to count number of words in string.

Note :

• Remove white-space from start and end position.
• Convert 2 or more spaces to 1.
• Exclude newline with a start spacing.

7. Write a JavaScript function to check whether a given value is IP value or not.

8. Write a JavaScript function to count the number of vowels in a given string.

Test Data :
console.log(alphabetize_string('United States'));

Output :
"SUadeeinsttt"

9. Write a JavaScript function to check whether a given value is an valid url or not.

10. Write a JavaScript function to check whether a given value is alpha numeric or not.

11. Write a JavaScript function to check whether a given value is time string or not.

12. Write a JavaScript function to check whether a given value is US zip code or not.

13. Write a JavaScript function to check whether a given value is UK Post Code or not.

14. Write a JavaScript function to check whether a given value is Canada Post Code or not.

15. Write a JavaScript function to check whether a given value is a social security number or not.

16. Write a JavaScript function to check whether a given value is hexadecimal value or not.

17. Write a JavaScript function to check whether a given value is hexcolor value or not.

18. Write a JavaScript function to check whether a given value represents a domain or not.

19. Write a JavaScript function to check whether a given value is html or not.

20. Write a JavaScript function to check a given value contains alpha, dash and underscore.

21. Write a JavaScript function to print an integer with commas as thousands separators.

Test Data :
console.log(thousands_separators(1000));
"1,000"
console.log(thousands_separators(10000.23));
"10,000.23"
console.log(thousands_separators(100000));
"100,000"

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