How Long Is a Word?
Count the letters with length.
How Long Is a Word? is a free Javascript for Kids lesson on CoddyKit — lesson 3 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Javascript for Kids learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
How Long is a Word? 📏
Hello, measuring master! 🌟 Today we count how many letters are in a word.
We use a magic helper called .length! 🔢
console.log("cat".length)The .length Helper 🪄
Add .length after a string and it counts the letters!
"cat".length is 3 because c-a-t is 3 letters. 🐱
console.log("dog".length)Counting a Big Word 🐘
Long words have a big length!
Let us count the letters in "elephant". 🐘
console.log("elephant".length)Spaces Count Too ␣
Remember, spaces are part of the string!
So "a b" has a length of 3: a, space, b. 👀
console.log("a b".length)Measuring a Box 📦
You can measure a string saved in a box too!
Put a word in a box, then check its .length. 📐
let word = "rainbow"
console.log(word.length)Empty String Length 🫙
An empty string "" has a length of 0.
No letters means zero! 0️⃣
console.log("".length)Whose Name is Longer? 🧒
We can compare lengths to see whose name is longer!
Let us check two names. 🆚
console.log("Sam".length)
console.log("Olivia".length)Length of a Sentence 📜
A whole sentence has a length too! It counts every letter AND every space.
That can be a big number! 🤯
console.log("I love cake".length)Using Length in a Message 💬
We can join .length with words to make a fun message!
Tell everyone how long a word is. 📣
let animal = "tiger"
console.log("Tiger has " + animal.length + " letters")Count Your Name ✍️
Change "Alex" to YOUR name and see how long it is!
So cool to measure your own name. 😍
let myName = "Alex"
console.log("My name has " + myName.length + " letters")Emojis and Length 🦄
Even emojis add to the length! Try counting a word with a smiley.
Every character counts! 🎈
console.log("hi 😀".length)Quick Check ✅
Question time! Take your time and think. 🧠
Measuring Champion! 🏆
Brilliant! 🎊 Today you learned:
.lengthcounts the letters in a string- Spaces and emojis count too!
- An empty string has length 0
You are a length-measuring legend! 📏⭐
console.log("I can measure words! 📏")Frequently asked questions
Is the “How Long Is a Word?” lesson free?
Yes — the full text of “How Long Is a Word?” is free to read here on the web, and the Javascript for Kids course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Javascript for Kids course, upgrade to CoddyKit PRO.
What will I learn in “How Long Is a Word?”?
Count the letters with length. You practise Javascript for Kids with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Javascript for Kids?
No prior experience is required. Javascript for Kids on CoddyKit is structured for beginners through advanced learners; this is — lesson 3 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “How Long Is a Word?” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Javascript for Kids lesson?
Yes. Every Javascript for Kids lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- What Is a String?
- Joining Words Together
- How Long Is a Word?
- Making Words SHOUT or whisper