JavaScript Closures

JavaScript Closures

?? Day 6 of #30DayCode Challenge ??

? Understanding JavaScript Closures with a Coffee Shop Story ?

Let’s imagine a coffee shop:

1?? The coffee shop is like the outerFunction. It has everything you need: coffee beans, milk, and a recipe. 2?? The barista is like the innerFunction. They know how to make the coffee and serve it to you. 3?? When you order coffee, the barista takes the recipe (outerVariable) from the shop and starts making coffee.

Now, here’s the cool part:

  • Even if the coffee shop closes for the day (outerFunction finishes executing), the barista (innerFunction) still remembers the recipe (outerVariable).
  • The barista can make coffee for you later using the recipe they remembered!


?? What’s happening here? The barista (innerFunction) remembers the recipe (outerVariable) from the coffee shop (outerFunction), even after the shop is closed.

?? Why does this matter in programming? Closures let us:

  • Keep data secure and private, just like the recipe stays with the barista.
  • Reuse functions with specific data for flexibility and efficiency.

Learning about closures felt like finding a secret ingredient for making my code better. What’s your favorite JavaScript feature? Let’s share and learn together! ??

Thank you 10000 Coders and Harish Malisetty Sir.

#JavaScript #WebDevelopment #10000coders


Pavan Kalyan Ummagani

??Mastering web development| MERN Stack Enthusiast | ?? Passionate About Building Scalable Web Applications | ?? JavaScript | React | Node.js | Express | MongoDB | ?? Turning Ideas into Seamless Digital Experiences

2 个月

Very helpful??

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