You should understand regular expression:

• String Literals
• Character Classes
• Predefined Character Classes
• Quantifiers
• Capturing Groups
• Boundary Matchers

You should be able to:

• Develop regular expressions to validate different numerical patterns, such as phone numbers and IDs.

• Develop regular expressions to validate strings such as email addresses, passwords, etc.

• Develop regular expressions to select or recognise different types of strings, such as past-tense verbs and occurrences of words in text.

• Use regular expressions in JavaScript, Perl, Python and PHP