jQuery Basics Quiz

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Questions and Answers

Which method should be used to perform an Ajax call in jQuery?

reload.data(url, [data], [callback])

load(url, [data], [callback]) (correct)

fetchData(url, [data], [callback])

ajax.call(url, [data], [callback])

What does the selector $("div.intro") select?

The first div element with class="intro"

The first div element with id="intro"

All div elements with class="intro" (correct)

All div elements with id="intro"

In jQuery, what does the method outerWidth() return?

The outer width of an element excluding margin

The total width of the element along with its outer margins

The outer width of an element including the border (correct)

The inner width of an element excluding padding

What is the purpose of the param() method in jQuery?

To convert an array or object into a query string format Signup and view all the answers

Which jQuery method is used to set the background color of all span elements to blue?

$(“span”).css(“background-color”,“blue”); Signup and view all the answers

Which HTML element defines navigation links?

<nav> Signup and view all the answers

Which HTML attribute is used to define inline styles?

style Signup and view all the answers

What does HTML stand for?

Hyper Text Markup Language Signup and view all the answers

What is the correct syntax for adding a background color for all
elements?

h1 {background-color:#FFFFFF;} Signup and view all the answers

Which function of the Array object returns the first index of an element equal to a specified value?

indexOf() Signup and view all the answers

What is the correct HTML for inserting an image?

<img src='image.gif'> Signup and view all the answers

Which property is used to change the font of an element?

font-family Signup and view all the answers

A function with no return value is called __________.

Procedure Signup and view all the answers

Which function of Array object reverses the order of the elements in an array?

reverse() Signup and view all the answers

Which of the following is a proper syntax for defining a CSS style that changes text color?

body {color: black;} Signup and view all the answers

What does the CSS property 'font-size' control?

The size of the text Signup and view all the answers

Which HTML element is used to create a line break?

Signup and view all the answers

What is a ternary operator often used for?

To write a conditional statement Signup and view all the answers

Which of the following statements best describes the purpose of the escape sequence '\f'?

Represents a page break in printing Signup and view all the answers

Which of the following methods gives a string representation of a number in a locale-sensitive format?

toLocaleString() Signup and view all the answers

How do you correctly select elements with class name 'test' in CSS?

.test Signup and view all the answers

Which character is used to indicate an end tag in HTML?

/ Signup and view all the answers

Which HTML tag is used to define an internal style sheet?

What does it mean if a language is case-sensitive?

It differentiates between lower and uppercase letters. Signup and view all the answers

Which operator is used to check that a value is not equal to 'null' in JavaScript?

!== null Signup and view all the answers

Which property is used to change the background color of an element?

background-color Signup and view all the answers

Which function returns the index of the last occurrence of a specified value in a string?

lastIndexOf() Signup and view all the answers

Which class applies hover color to a specific row or cell of a table?

.warning Signup and view all the answers

Which class is used to create thumbnail images?

.img-thumbnail Signup and view all the answers

Which Bootstrap style is used for combining button sets for complex components?

.btn-toolbar Signup and view all the answers

Which class creates a list of items?

.list-group Signup and view all the answers

Which Bootstrap style aligns nav links or forms to the right in a navbar?

.navbar-right Signup and view all the answers

What is the correct data-selector Data attribute of Popover Plugin?

All of the above Signup and view all the answers

What is the default size of an H5 Bootstrap heading?

16px Signup and view all the answers

Which of the following Bootstrap styles is used to create pills navigation?

.nav-pills Signup and view all the answers

Which class indicates a dropdown menu in Bootstrap?

.dropdown Signup and view all the answers

What jQuery method is used to switch between adding/removing classes from selected elements?

toggleClass() Signup and view all the answers

Which jQuery method is used to hide selected elements?

hide() Signup and view all the answers

Which method checks the current selection against an expression in jQuery?

is( selector ) Signup and view all the answers

Which method is used to perform an asynchronous HTTP request in jQuery?

ajax() Signup and view all the answers

Which method loads a remote page using an HTTP request in jQuery?

ajax() Signup and view all the answers

Study Notes

HTML Background Color

Add background color using CSS: h1 {background-color:#FFFFFF;}

Use the <nav> element to define navigation links.

JavaScript Procedures

A function with no return value is called a procedure.

Inline Styles in HTML

Use the style attribute for inline styles: <div style="color:red;"></div>

JavaScript Errors

JavaScript errors include syntax errors, division by zero, and missing semicolons.

Background Color for All Elements

Use a CSS selector to apply a background color to all elements: h1 {background-color: #FFFFFF;} (Corrected).

HTML Header Element

<header> element defines a header for a document or section.

HTML Tag: Acronym

Acronym is a term for abbreviations or initialisms. It is rendered in sans-serif with capitals. <acronym title="World Health Organization">WHO</acronym>

HTML Stnad for

HTML stands for Hyper Text Markup Language

HTML Background Images

Use the background-image property to insert a background image within CSS. For example: <style>body { background-image: url("image.jpg"); }</style>

HTML List Styles

Use CSS to style lists with squares: ul {list-style-type: square;}

HTML Image Tag

The <img> tag is used to insert an image: <img src="image.jpg" alt="Description">

HTML Hyperlinks

Correct HTML for a hyperlink: <a href="http://www.tip.edu.ph">T.I.P.Schools.com</a>

Font Style

Use font-family to change the font: p {font-family: "Arial", sans-serif;}

Equality Comparison in JavaScript

a === b checks for equality of value and type.

Array Functions

indexOf(): Returns the index of the first occurrence of an element.
lastIndexOf(): Finds the index of the last occurrence of a value. (Corrected)

Programming Language Level

A scripting language is a high-level programming language.

Case Sensitivity in JavaScript

JavaScript is a case-sensitive language

Selecting Elements by ID in CSS/HTML

Select an element with ID 'demo': #demo (Corrected)

String Functions

lastIndexOf(): Returns the index of the last occurrence of a substring.

Number Object Function

toLocaleString(): Formats a number as a string based on the browser's locale.

Emphasized Text in HTML

Use the  tag for emphasized text: This is emphasized text.

CSS Syntax

Correct CSS syntax: body {color: black;}

Ternary Operator

The ternary operator is ?: (e.g., condition ? value1 : value2).

JavaScript Placement Options

JavaScript can be embedded directly within HTML files.

Line Break in HTML

  tag creates a line break.

Array Sorting

sort(): Sorts the elements of an array.

HTML Checkboxes

<input type="checkbox"> creates a checkbox.

Array Reverse

reverse(): Reverses the order of elements in an array.

Escape Sequences (JavaScript)

\f represents a form feed (not specific to HTML or CSS).

CSS Comments

// this is a comment

External Style Sheets

Place <link> tag inside the <head> section to reference an external style sheet.

JavaScript Execution

Call JavaScript code with events (clicks, etc.), function calls, or methods.

Local Variables

Local variables are only accessible within the function they're declared in.

Text Size in CSS

Use font-size to change text size: p {font-size: 16px;}

Objects in Programming

An object is a collection of named properties (with values).

Selecting Elements by Class

Use .class for CSS selectors: .test

Bold Text in CSS

Use font-weight: bold; to make text bold: p {font-weight: bold;}

HTML Text Input

<input type="text"> defines a text input field.

Background Color in CSS

Use background-color to set a background color: div { background-color: blue; }

HTML Tag Endings

End tags in HTML are denoted by </element_name>.

CSS Acronym

CSS stands for Cascading Style Sheets.

Internal Style Sheets in HTML

Use <style> tags within <head> to define internal style sheets.

String Conversion to Upper Case in JavaScript

toUpperCase(): Converts a string to uppercase.

Important Text in HTML

Use the  tag to define important text: This is important.

Null Check in JavaScript

Use if (a !== null) to check if a is not null, as this is a strict comparison.

CSS Selector Grouping

Combine selectors with commas: h1, p { color: blue; }

Anonymous Functions in JavaScript

You can pass anonymous functions as arguments to other functions.

Highest Heading in HTML

<h1> tag defines the largest heading.

HTML Elements

Specify the element type like , <div>, <h1>, etc.

Bootstrap Plugins

The plugin used to create a modal window is modal.

Bootstrap Table Styles

table.table-hover.table-striped.table-bordered creates a table with stripes and hover.

Bootstrap Button Styles

btn-warning indicates caution.

Bootstrap Framework Developers

Bootstrap was developed by Mark Otto and Jacob Thornton

Bootstrap Pagination

Bootstrap uses pagination for pagination.

Hovered Table Rows

Use table-row for hovering on table rows.

Bootstrap Image Styles

img-thumbnail makes images appear like thumbnails.

Bootstrap Button Groups

btn-group groups buttons.

Bootstrap List Items

Use list-group for lists of items.

navbar-left and navbar-right align elements in a navbar.

data-placement specifies popover positioning (top, bottom, etc.).
data-content sets popover content.

Bootstrap Heading Sizes

Default H5 heading size in Bootstrap is 1.5rem (16px).

nav-pills creates pill navigation.

Bootstrap Form Layouts

Default layout is vertical.

Bootstrap Progress Bars

Use progress-stacked to create a stacked progress bar.

jQuery Text Selection

:contains() selects elements containing text.

jQuery Element Height

Set the height of div elements to 100 pixels: $("div").height(100);

jQuery Effects

Use hide(), show(), and toggle() for animation.

jQuery Class Switching

toggleClass() toggles classes.

jQuery Element Positioning

position(): Returns element position relatively to its offset parent.

jQuery AJAX Request

$.ajax(): Performs an asynchronous HTTP request.

jQuery Remote Page Loading

load(): Loads a remote page.

jQuery Selector Expression Check

is(selector) checks if an element matches a selector.

jQuery Element Hiding

hide(): Hides the selected elements.

jQuery Ready Event Control

holdReady(): Controls jQuery's ready event.

jQuery Shortcut

jQuery is used with the $ sign (dollar sign).

jQuery Function Equivalents

$.foo() is equivalent to jQuery.foo().

jQuery JSON Parsing

parseJSON(): Parses JSON text.

jQuery Array Iteration

forEach(): Iterates over array elements.

jQuery Global Function

jQuery(), the constructor, as well as $(), is a global jQuery function.

jQuery Class Checking

hasClass(): Checks for the presence of a specified class.

String Character Access

charAt(): Retrieves a character from a string.

jQuery AJAX Calls

load() is a jQuery method for performing AJAX calls.

jQuery Element Selection (div.intro)

Selects all <div> elements with the class "intro."

Short Form - Minimum

min usually means minimum value.

jQuery Inner Height

innerHeight(): Returns inner height, excluding padding and border.

jQuery Selector Match Check

is(selector) checks the current selection against a selector expression.

jQuery Outer Width

outerWidth([margin]): Returns outer width (including border and margins).

jQuery Data Serialization

param(): Serializes data in an array or object format.

jQuery Style Property Retrieval

Use .css('property') for a specific style property

jQuery Background Color for Span

$("span").css("background-color", "blue"); sets the background color of all span elements to blue.

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Description

Test your knowledge of fundamental jQuery concepts with this quiz. Answer questions about Ajax calls, element selectors, and methods like outerWidth() and param(). Perfect for beginners looking to solidify their understanding of jQuery basics.