🎯 Lesson 1: What is Regex?
Let's meet our friend Regex and learn what it can do!
👋 Meet Regex!
Regex (short for "Regular Expression") is like a super-smart search tool! It's a way to tell the computer exactly what patterns to look for in text.
🎈 Fun Fact: Imagine you're looking for all the red balloons in a big party. Regex is like giving the computer special glasses that can spot exactly what you're looking for!
🔍 What Can Regex Do?
Regex can help us:
- 📧 Find email addresses in text
- 📞 Spot phone numbers
- 🔤 Search for specific words or patterns
- ✨ Replace text with something else
- ✅ Check if text follows certain rules
🎮 Let's Try It!
Type the word "cat" in the box below to search for it in the text:
The cat sat on the mat. The dog chased the cat around the tree.
🎯 More Practice!
Let's try a few more examples to get comfortable with regex!
Challenge 1: Find "dog"
I have a big dog. The dog likes to play. My neighbor's dog is small.
Challenge 2: Find "123"
My code is 123. The number 456 and 123 are special. Room 123 is here.
Challenge 3: Find "fun"
Learning is fun! We had fun at the park. Regex is so much fun to learn!
🧠 Quick Quiz!
What does "regex" stand for?
🎯 What You Learned!
Regex Explorer!
You now know what regex is and how it helps us find patterns in text. Great job!