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strings-template-literals

Strings and template literals

Last reviewed May 28, 2026 Content v20260528
Track mode
client_javascript
Means
In-browser JS
Reading
~1 min
Level
beginner

This lesson

This lesson teaches Strings and template literals—the ideas, syntax, and habits you need before moving on in JavaScript.

Without a solid grasp of Strings and template literals, you will repeat mistakes in JavaScript exercises and on real pages or scripts.

You will apply Strings and template literals in contexts like: Browsers, Node.js services, edge workers, and tooling ecosystems (bundlers, test runners).

Run JavaScript in the in-browser sandbox, use the terminal output panel, and verify with MCQs.

When the previous lesson's MCQs feel easy and you can explain Strings and template literals in your own words.

Strings are UTF-16 text. Template literals (backticks) support interpolation and multiline text.

Template literals

const name = 'Ada';
const msg = `Hello, ${name}!`;
console.log(msg);

Useful methods

includes, startsWith, trim, split, slice—prefer these over regex for simple checks.

Important interview questions and answers

  1. Q: Backticks vs quotes?
    A: Backticks allow ${} interpolation and multiline.
  2. Q: Immutable strings?
    A: Primitives are immutable—methods return new strings.

Self-check

  1. How embed a variable in a string?
  2. What does trim() do?

Tip: Re-run the playground code for strings-template-literals and tweak one line before the MCQs.

Interview prep

Backticks?

Enable interpolation and multiline strings.

Interview tip Lesson completion confidence

Can you explain this lesson in 30 seconds without reading notes?

Not saved yet.

Playground

Runs in your browser in a sandboxed frame. Backend runners appear when this track’s profile allows them.

Check yourself

Multiple choice — immediate feedback.

Discussion

Past discussion is visible to everyone. Only logged-in users can post comments and replies.

Starter discussion topics

  • What would you log to verify this behavior?
  • What breaks if you run this before the DOM is ready?

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