Learning PHP, MySQL, JavaScript, and CSS, 2nd Edition

Test Your Knowledge

1. What JavaScript method can you use to send a form for validation prior to submitting it?

2. What JavaScript method is used to match a string against a regular expression?

3. Write a regular expression to match any characters that are nonword characters, as defined by regular expression syntax.

4. Write a regular expression to match either of the words “fox” or “fix.”

5. Write a regular expression to match any single word followed by any nonword character.

6. Using regular expressions, write a JavaScript function to test whether the word “fox” exists in the string “The quick brown fox”.

7. Using regular expressions, write a PHP function to replace all occurrences of the word “the” in “The cow jumps over the moon” with the word “my.”

8. What HTML keyword is used to precomplete form fields with a value?

See Chapter 16 Answers in Appendix A for the answers to these questions.