What is hoisting in JavaScript with let and const?
An example of an AI chatbot conversation about hoisting with let and const in JavaScript.
Can you explain what hoisting is in JavaScript, especially with let and const?
Sure! Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their containing scope during the compile phase.
How does hoisting work differently for let and const compared to var?
Unlike var, variables declared with let and const are not initialized until their definition is evaluated, leading to a 'temporal dead zone'.
What happens if I try to access a let or const variable before it's declared?
If you try to access a let or const variable before its declaration, you'll get a ReferenceError due to the temporal dead zone.
Can you give me an example of hoisting with let and const?
Certainly! If you write console.log(x); let x = 5;, it will throw a ReferenceError. But var y; console.log(y); will log undefined.
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