Web Reference: JavaScript follows lexical scoping (also called static scoping). This means that the scope of a variable is determined by where it is written in the source code, not by where the function is called from. Nov 13, 2023 · At its core, scope in JavaScript refers to the context or environment in which variables are declared and can be accessed. It dictates the visibility and lifetime of a variable, determining where in your code a particular variable is valid and accessible. These two keywords provide Block Scope in JavaScript. Variables declared with let and const inside a code block are "block-scoped," meaning they are only accessible within that block.
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