HTML Tutorial 9

¡Supera tus tareas y exámenes ahora con Quizwiz!

Identify the output of the following code. var x = 8; var y = 6;

56 28 96

​_____ is the programming language for client-side programs.

JavaScript

​The _____ attribute tells a browser to parse the HTML and JavaScript code together, only pausing to process the script before returning to the HTML file.

async

​Identify a command that displays a dialog box containing the message "Hello World!".

window.alert("Hello World!");

Which of the following methods of the Math operator rounds x up to the next highest integer?

​Math.ceil(x)

​The _____ property should be used only when no markup tags are involved.

​textContent

​Identify a command that uses the dateDiv variable to refer the page element with ID dateNow.

​var dateDiv = document.getElementById("dateNow");

​To break a text string into several lines, which means that the text string continues on the next line, the _____ character should be used.

backslash

The technique for locating the source of an error is to set up _____, which are locations where the browser will pause the program, allowing the programmer to determine the error at that position.

breakpoints

JavaScript is used as a programming tool for: ​

creating interactive web forms and animated graphics

​The _____ attribute can be applied to the script element to ensure that an object can be referenced within a JavaScript program that runs only after the page has completed loading.

defer

​Identify an expression that can be used to refer an element by its id attribute.

document.getElementById(id)

​A(n) _____ is a collection of commands that performs an action or returns a value.

function entity pointer

​Which of the following syntax is used for a function to return a value?

function function_name(parameters){ commands return value;}

​Identify a syntax for JavaScript function.

function_name function(parameters){ commands }

​Identify a syntax to access any of the mathematical constants supported by the Math object.

math.constant ​Math.CONSTANT ​Math.constant

​Identify an expression that defines a date object.

new Date("month day, year" "hrs:mins:secs"); ​new Date("month day, year hrs:mins:secs"); ​new Date("month, day, year" hrs:mins:secs);

​A video embedded on a web page is a(n) _____ and has properties such as source of the video file or the width and height of the video player.

object

​Objects are organized into groups called _____.

object collections

​Identify an expression used to apply a method to an object.

object.object(method) ​object.method(values) ​Object.name(values)

​A _____ occurs after a script has been successfully loaded with no syntax errors and is being executed by a browser.

run-time error

​JavaScript code is attached to an HTML file using the _____ element.

script

​A command that indicates an action for the browser to take should end with a _____.

semicolon

​Identify a method that repeatedly runs commands at specified time breaks in a function created.

setInterval("command", interval)

​Identify a syntax to set the time-delayed commands.

setTimeout("command", delay);

​A user can create an embedded script by removing the _____ attribute and placing all of the JavaScript code within the script element.

src

​Developers advocate that JavaScript be run in _____ in which all lapses in syntax result in load-time or run-time errors.

strict mode

A(n) _____ is any group of characters enclosed within either double or single quotation marks in JavaScript.

text string

​Identify a property used to refer an HTML code that is stored within a page element.

element.innerHTML

​Identify a function that extracts the first numeric value from the text string.

parseFloat(string)

Identify a statement that is added to the first line of the file to run a script in strict mode.​

"use strict";

_____ are intrinsic to the JavaScript language.

Built-in objects

​_____ is the process of locating and fixing a programming error.

Debugging

​Identify a shortcut key on the keyboard to open the debugging tools.

F12

​Identify a return value for the expression 5/"A" using JavaScript.

NaN

​A(n) _____ is a named item in a program that stores a data value, such as a number or text string, or an object, such as a part of the web browser or browser window.

variable

​To avoid fatal errors, it is advised to apply the _____ statement locally only to functions that are created rather than globally as the first line of the script file.

​"use strict"; ​"use global"; ​"use moderate";

​Which of the following can be referenced only after the browser has finished parsing the page content?

​Built-in objects ​Browser objects ​Document objects

​_____ programming distributes the load to prevent a server from getting overloaded with program-related requests.

​Client-side

Which of the following is created by a programmer for use in an application.

​Customized objects


Conjuntos de estudio relacionados

Skeletal System, Part 1, Calcium Homeostasis, Locklin

View Set

Genetics ...Patterns of Inheretence

View Set

Just One More Serving Please Lab

View Set

Chapter 21: Nursing Management of Labor and Birth at Risk

View Set

FON Exam 4 Psychosocial Issues Grief, Loss, and Dying (Week 11)

View Set