(MCQs for web) MCQ on Front-end Development

What will be the value of selected?

let pocket = ['turnip', 'stone', 'log', 'apple'];
let selected = pocket[1];

Lighthouse is a tool for auditing your website. Which choice is not a category of report offered by Lighthouse?

What is the correct way to initialize an array of galaxies in JavaScript?

You find this code in a stylesheet. What is it being used for?

.cf::after {
  content: '';
  display: block;
  clear: both;
}

A webpage has rel="preconnect" added to a link resource. What will this do?

<link rel="preconnect" href="https://example.com">

How does the rem unit represent a font size?

Which choice is a correct use of the parseInt() function in Javascript that parses a string and return an integer?

How many columns will there be, given this code?

.container {
  width: 600px;
  column-width: 200px;
  column-gap: 50px;
}

You have a set of images that are slightly different sizes and aspect ratios. You don't mind if you crop off some of the image, but you want each image to completely fill a square box without being distorted. Which property and value would achieve this?

What does the === comparison operator do?

Which choice is not part of CSS box model

Which choice is not a render blocking resource?

In this code, what is the term for the h1?

h1 {
  color: red;
  font-size: 5em;
}

Variables declared with the let keyword have what type of scope?

Why would you surround a piece of text with <h1></h1> tags?

Which part of the URL https://app.uniswap.org/pool specifies the domain name

In the following code, the variable fruit has been assigned a value of apple. How would you change the value to plum?

let fruit = 'apple';

Which HTML element represents either a scalar value within a known range a fractional value?

What is Webpack primarily used for?

What will this loop print?

let max = 3;
     for (i = 0; i > max; i++) {
       document.write("skrt ");
     }

When might an empty alt attribute be the correct value?

what does the CSS selector a[href$="org"] select?

Which statement is true when an HTML tag has been deprecated?

You have used dispaly: none in your stylesheet. Which users will be able to see or hear this content?

How can you rewrite this function using arrow function syntax?

What is the <label> element used for?

Which HTML will result in text being highlighted in yellow?

.highlight {
  background-color: yellow;
}

Which attribute must have a unique value each time it is used in an HTML document?

The browser finds some CSS that it does not understand. What is likely happen?

You have placed an image in a directory named images and want to reference it from a page located in the root of your site. Which choice would correctly display the image on the page?

Which HTML element is not considered a landmark element?

Which CSS property will not trigger layout recalculation?

Which description correctly describes the initial values of flex items if the only thing you have done is apply display: flex to their parent?

In the context of this code, how would you describe user?

const user = {
  given_name: 'Joe',
  family_name: 'Bloggs',
  age: 40,
}

In normal flow, some elements display as block elements default and others inline. which choice contains only block-level by default elements?**

Which choice is not a value of the type attribute of the <input> element?

A video on your webpage does not display and the console shows an error about mixed content. What is happening?

Which line of code, if applied to all flex items in a flex container, would cause each flex item to take up an equal share of the total width of the container? For example, if there are four items, they would get 25% of each/