Basic Javascript Iterate With Javascript HD50tld8ROc

Web Reference: In the first example, using var, the variable declared in the loop redeclares the variable outside the loop. In the second example, using let, the variable declared in the loop does not redeclare the variable outside the loop. Jan 19, 2026 · Loops in JavaScript allow a block of code to run multiple times as long as a given condition is satisfied. They help reduce repetition and make programs more efficient and organized. You can run the same code multiple times by using a loop. The most common type of JavaScript loop is called a for loop because it runs for a specific number of times.

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