49 javascript bangla tutorial javascript hoisting

in the 49th javascript bangla tutorial, the concept of hoisting is explored, a fundamental aspect of javascript that often confuses many developers. hoisting refers to the behavior of javascript in which variable and function declarations are moved to the top of their containing scope during the compilation phase before the code is executed. this means that variables can be referenced before they are declared in the code, leading to potentially unexpected results. the tutorial explains how variable declarations using `var`, `let`, and `const` behave differently when hoisted, emphasizing that `var` allows access before declaration (resulting in `undefined`), while `let` and `const` do not, causing a referenceerror if accessed early. additionally, function declarations are fully hoisted, allowing them to be invoked prior to their definition. understanding hoisting is crucial for writing predictable and bug-free javascript code, making this tutorial an essential resource for learners.
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