Literal Matching

The simplest regex pattern matches text literally, character by character.

Exact Matches

The pattern hello matches exactly those five characters in that order.

Notice how:

• hello matches inside hellooo (the first 5 characters)
• Each occurrence is found with the g (global) flag

Case Sensitivity

By default, regex is case-sensitive.

Multiple Occurrences

With the g flag, all matches are found:

Matching Phrases

You can match multiple words too:

Practice

Try matching:

• quick - appears twice
• the - case sensitive
• jump - find both jump and jumps

Key Takeaways

• Literal patterns match exact text
• Case matters by default (use i flag to ignore)
• The g flag finds all occurrences
• Spaces and punctuation are characters too