Web Reference: Mar 13, 2026 Β· Module scope refers to variables and functions that are accessible only within a specific JavaScript module. It helps keep code organized and prevents variables from affecting the global scope. 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. Local Scope and Functions Variables which are declared within a function, as well as the function parameters, have local scope. That means they are only visible within that function. Here is a function myTest with a local variable called loc. function myTest() { const loc = "foo"; console.log(loc); } myTest(); console.log(loc);
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