JavaScript Interview Questions | #0113 #javascript

In this YouTube Short, We have a variable a = 10, and then an IIFE (Immediately Invoked Function Expression). Inside the function:

1️⃣ console.log(a); is executed first. But wait! There’s a local var a inside the function.
2️⃣ Due to hoisting, var a is declared at the top inside the function but remains undefined until it’s assigned 20.
3️⃣ So, when console.log(a); runs, it doesn’t access the outer a = 10, instead, it prints undefined.

Final output? undefined, because of JavaScript’s variable hoisting!

#javascript #codingtricks #technical #webdevelopment #programming #codetips #codingfrontier #javascripttips #learntocode2023 #shortvideo #react #shorts

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