F5 JavaScript 1

When a user views a page containing a JavaScript program, which machine executes the script?

Which of the following lines of JavaScript code will change the HTML inside of an element with the attribute id="myElement" to "CS 105"?

If the function print() has been defined that prints the value passed in as the parameter to it, how many times is "Hello" printed?

If the initial value of x (set on Line #1) is now 5 instead of 20, how many times is "Hello" printed?

Based on its usage in the function, what type of variable x be?

Which of the following statements are true about this code?

In JavaScript, which one of the following is not considered as an error?

In JavaScript, the statement "40" + 6 will return

To determine if an object contains a certain property, we can use the ______ operator.

What is the correct JavaScript syntax to change the content of the HTML element <p id="demo">This is a demonstration.</p>

What is the output of the following JavaScript snippet?

What is the output of the following JavaScript snippet?

If you have the following JavaScript statement:

The first console.log statement (line 4) will output:

If we call func(1, "1"); it will log:

If we call func("1"); it will log:

If we call func("A", "2", "Ali", "Z"); it will log:

If we call func(); it will log:

Line 2 in this code will (ignoring lines from 3- to the end):

Assume Line 2 in this code is removed, then line 3 in this code will (ignoring lines from 4- to the end):

Assume Lines from 1 to 3 are removed. Line 5 will:

Assume Lines 2, 4, and 5 in this code are removed. Line 6 will output:

Assume Lines from 1 to 3 in this code are removed, and line 6 is removed too, code remaining is only lines 4, 5 and 7, line 7 will output:

JavaScript is a statically typed language.

var a = 200; var b = "200"; a == b will return true while a === b will return false?

isNaN("Hello") returns true while isNaN(undefined) returns false?

Which of the following statement(s) is true about the JavaScript?

Which is the correct syntax to call an external JavaScript file in the current HTML document?

Which JavaScript method is used to write on browser's console?

Which JavaScript method is used to write into an alert box?

Which is the correct syntax to declare a constant in JavaScript?

What will be the output of this code?

Can we use a function as a variable value?

What will be the value of X?

What is the output of the following JavaScript code?

What will be the output of the following JavaScript code?

Which is the correct syntax to access an object property in JavaScript?

What will be the output of the following JavaScript code?

What will be the output of the following JavaScript code?

If you have the following JavaScript statement:

var colors = {1:"red", 2:"green", 3: "blue"} is one of the ways of defining an array in JavaScript?

To determine the type of an object, we can use the "typeof" function in JavaScript.

Which of the following is true about JavaScript syntax?

What is the purpose of the prototype property in JavaScript objects?

What will the following JavaScript code log?

How many ways are there with which we can declare a variable in javascript?

What will be the output of the following Java Script code snippet?

Which method can be used to combine two arrays in JavaScript?

Given a scores array in JavaScript, write a complete snippet to: 1. Start with const scores = [45, 80, 89, 30, 95]; and use the .filter() method to create a new array called passingScores that only contains numbers greater than 50. 2. Log the result using console.log().

Given a student record stored in a JavaScript object, write a complete snippet to: 1. Create an object named student with properties name ('Ali') and gpa (3.8). 2. Use document.writeln() to output: 'Ali has a GPA of 3.8' by dynamically accessing the object's properties.

Given the traditional function function(a, b) { return a * b; }, write a complete JavaScript snippet to: 1. Convert it to an ES6 arrow function and assign it to a const variable multiply.

Given an array const servers = [{host: 'Alpha'}, {host: 'Beta'}];, write a complete JavaScript snippet to: 1. Use the ES6 .map() method with arrow function syntax. 2. Create a new array called serverNames containing only the host strings.

Given an array of strings const labels = ['Secure', 'Fast', 'Scalable'];, write a complete JavaScript snippet to: 1. Use the .reduce() method to concatenate them into a single hyphen-separated string (e.g., 'Secure-Fast-Scalable'). 2. Assign the result to a variable tagline.