CODE HS 3 Questions and Answers Rated A+

CODE HS 3 Questions and Answers Rated A+ How do you declare a variable in JavaScript? You declare a variable using `let`, `const`, or `var`. What is the difference between `let` and `const` in JavaScript? `let` allows you to reassign a variable, while `const` makes it immutable. How do you create a function in JavaScript? You create a function using the `function` keyword followed by a name and parentheses. What is an array in JavaScript? An array is a collection of elements stored in a single variable. How do you access the first element of an array in JavaScript? You access it using `array[0]`. 2 What does the `push()` method do in JavaScript? The `push()` method adds an element to the end of an array. How do you remove the last element of an array? You use the `pop()` method. What is the purpose of the `if` statement in JavaScript? The `if` statement is used to execute code only if a specified condition is true. How do you create a loop in JavaScript? You use a `for` loop, `while` loop, or `do...while` loop. What is the difference between `==` and `===` in JavaScript? `==` checks for value equality, while `===` checks for value and type equality. How do you define an object in JavaScript? You define an object using curly braces `{}` with key-value pairs. 3 What is the purpose of the `return` statement in JavaScript? The `return` statement sends a value back from a function to its caller. How do you add a property to an object in JavaScript? You add a property using `rtyName = value`. What does the `length` property of a string do in JavaScript? The `length` property returns the number of characters in the string. What is a callback function in JavaScript? A callback function is a function passed as an argument to another function. How do you concatenate two strings in JavaScript? You concatenate strings using the `+` operator. What does the `split()` method do in JavaScript? The `split()` method splits a string