Every N8N JavaScript Function Explained (106 + 7 Extras)

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Join Maker School & get automation customer #1 + all my templates ⤵️ Want to work with my team, automate your business, & scale? ⤵️ Watch me build my $300K/mo business live with daily videos + strategy ⤵️ Summary ⤵️ One of the greatest parts about N8N is your ability to use JavaScript in the 'expression' field + your code editor. Compared to other no-code tools, this opens up a world of possibilities. But because it's code-adjacent, it can be difficult to get up and running without coding knowledge. In this video I will methodically go through *every* single built-in N8N JavaScript function, including string manipulation like 'includes()' and 'replaceAll()', to number and array functions like 'append()', 'map()', and 'reduce()'. I'll also walk you through a couple of real-world applications using base64 encoding, website scraping, HTML tag stripping, and datetime management. What to watch next 🍿 1. Exactly how I'd create another $39K/mo: 2. My $21,000/m Make.com proposal system: 3. Multi-cycle ChatGPT content generator: The Five, my pod w Matt Larsen on how to run a $10M/yr business ⤵️ My software, tools, & deals (some give me kickbacks—thank you!) 🚀 Instantly: 📧 Anymailfinder: 👻 PhantomBuster: 🧑🏽💻 n8n: 📈 Rize: (use promo code NICK for addn 25% off) Other places I exist 😈 🤫 Daily updates: @nicksaraevdaily 📸 Instagram: 🕊️ Twitter/X: 🤙 Blog: Why watch? If this is your first view—hi, I’m Nick! TLDR: I spent six years building automated businesses with Make.com (most notably 1SecondCopy, a content company that hit 7 figures). Today a lot of people talk about automation, but I’ve noticed that very few have practical, real world success making money with it. So this channel is me chiming in and showing you what *real* systems that make *real* revenue look like. Hopefully I can help you improve your business, and in doing so, the rest of your life 🙏 Like, subscribe, and leave me a comment if you have a specific request! Thanks. Chapters 00:00:00 Introduction to N8N JavaScript Functions 00:02:45 The Edit Fields Node 00:03:22 String Functions Overview 00:04:48 The Split Function 00:07:39 Using Starts With and Ends With 00:09:07 The Replace All Function 00:10:24 String Length and Base64 Encoding 00:12:51 Concatenation and Extract Functions 00:15:26 Validating Strings and Extracting Data 00:28:45 Case Conversion Functions 00:30:41 Parsing JSON and Data Types 00:30:57 Boolean and Date Time Functions 00:56:56 Conclusion and Final Thoughts 00:58:40 Converting Strings to Numbers 01:09:35 Exploring Array Functions 01:22:30 Array Manipulations 01:26:50 Renaming and Reversing Arrays 01:28:03 Advanced Array Techniques 01:34:45 Unions and Uniqueness 01:36:16 The Power of Map, Filter, and Reduce 01:40:51 Introduction to Object Functions 01:46:04 URL Encoding and Query Parameters 01:47:07 Datetime Functionality 01:57:19 Conclusion and Next Steps