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What's the difference between declaring a variable with let and var in JavaScript?

Asked on Friday, May 15, 2026

In JavaScript, "let" and "var" are both used to declare variables, but they have different scoping rules and behaviors. Here's a simple example to illustrate the differences: // Example of 'var' funct…

How can I prevent a function from being executed multiple times in a row quickly in JavaScript?

Asked on Thursday, May 14, 2026

To prevent a function from being executed multiple times in quick succession, you can use a technique called "debouncing". Debouncing ensures that a function is only called after a certain amount of t…

What is the difference between var, let, and const in JavaScript?

Asked on Wednesday, May 13, 2026

In JavaScript, "var", "let", and "const" are used for variable declarations, but they differ in scope, hoisting, and mutability. Here's a concise example to illustrate these differences: // var is fun…

How can I prevent a JavaScript function from executing multiple times in quick succession?

Asked on Tuesday, May 12, 2026

To prevent a JavaScript function from executing multiple times in quick succession, you can use a technique called "debouncing". Debouncing ensures that a function is only called once after a specifie…