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What is the difference between let, var and const

12/18/2024 8:14:39 AM 69

In JavaScript, `let`, `var`, and `const` are used to declare variables, but they differ in terms of scope, hoisting, and mutability.

How to use .join method in Javascript

12/18/2024 8:11:25 AM 89

The `.join()` method in JavaScript is used to join all elements of an array into a single string. It takes an optional `separator` parameter that specifies how the elements should be separated in the resulting string.

How to use console.log in Javascript

12/18/2024 8:07:58 AM 74

In JavaScript, console.log() is a built-in method used to print messages to the console, typically for debugging purposes.

What is null in Javascript

12/18/2024 8:04:20 AM 75

In JavaScript, `null` is a special value that represents the intentional absence of any object value.

How to round up in Javascript

12/18/2024 8:02:27 AM 76

To round up a number in JavaScript, you can use the `Math.ceil()` function.

How to round down in Javascript

12/18/2024 7:59:35 AM 52

To round down a number in JavaScript, you can use the `Math.floor()` method. This method returns the largest integer less than or equal to the given number.

How to use .reduce() method in Javascript

12/18/2024 7:58:08 AM 60

The `.reduce()` method in JavaScript is used to reduce an array of values into a single value.

How to use .every() method in Javascript

12/18/2024 7:56:07 AM 90

The `.every()` method in JavaScript is a built-in array method used to check if every element in an array satisfies a condition specified by a callback function.

What is arrow function in Javascript

12/18/2024 7:49:32 AM 48

An arrow function in JavaScript is a shorthand syntax for writing function expressions, making functions more concise and readable.

How to use querySelectorAll in Javascript

12/18/2024 7:36:15 AM 83

The `querySelectorAll` method in JavaScript is used to select multiple elements from the DOM based on a CSS selector. It returns a `NodeList` containing all the elements that match the specified selector.

What is a variable in JavaScript

12/18/2024 7:34:40 AM 39

In JavaScript, a variable is a named container that holds a value, allowing you to store and manipulate data.

How to use .toLowerCase() function in Javascript

12/18/2024 7:33:11 AM 50

The `.toLowerCase()` function in JavaScript is used to convert a string to lowercase letters. It is a built-in method that can be applied to any string variable or literal.

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