Cop final 2500
An operator used for concatenation
+
Difference between ++x and x++
++x is pre increment and x++ is post increment
What is a valid block comment in JavaScript?
/*This is a block comment*/
An inline comment is written as
// This is an inline comment
When using the Math.random() function of the Math object random numbers returned are between
0 (inclusive) and 1(exclusive)
How many times does a do/while loop execute as a minimum
1
jQuery timer $("#ball_holder").everyTime(100, function(){ $("#ball_holder").animate({top:"184px"}, 400).animate({top:"0px"}, 370); }); is executing every __________.
100 milliseconds
var sum = 19 + 83 which parts are the operands?
19 and 83
The ternary operator, which can be used to replace an if/else conditional statement, requires how many operands?
3
When using the concatenation what output would display based on the statement: document.write(102+201)
303
varword= "COP 2500 Concepts in Computer Science"; what would be the result of the word length be?
37
var message = 6 + 1 + 1 + " pets is probably too many!"; alert(message); What would be the output of this statement
8 pets is probably too many!
Where in an HTML document can functions be called
<a></a> <body></body> <head></head>
Tag element for defining hte clickable areas of an image map?
<area>
Tag element for creating the image map in HTML
<map>
The Html tag element creates a table row in a table
<tr>
<div> is used for
A division or section in an HTML document
An output of the HTML tag element <hr> when the HTML file is loaded in a web browser
A horizontal line
Website lifecycle is a request/response loop. A request is made when
A user types in ucf.edu in the URL
$(document).ready(function(){ $("p").click(function(){ $(this).hide(); }); })
All <p> tag elements
Which rule can be used to specify all of a Web site's style in one CSS file?
Amedia
document.getElementById("theDashes").innerHTML what does this reference?
An HTML element with the id attribute set to theDashes
Nested array
An array that contains another array, similar to the row/column concept, two-dimensional array.
After a function has been declared in the <head></head> section of the HTML document, how many times can it be used in the <body></body>
As many times it's required
var states = new Array(); states["CA"] = "90210"; states["ME"] = "01234"; states["MT"] = "55641"; states["FL"] = "32829"; What type of array is this
Associative
Recursion is a function that
Calls itself
Bit is short for
Binary Digit
JavaScript supported object include
Browser objects, Document objects, User-defined objects
var weekdays = new Array("Monday", "Tuesday", "Wednesday", "Thursday", "Friday"); What array statement is this?
Condensed
Boolean, const, string, numeric. What doesn't belong?
Const
To declare a constant, a value that cannot be changed during programming execution requires the use of keyword
Const
Decision making constructs for control flow such as if, if/else, if/else if, and switch are called
Control expression
When passing data to a function in JavaScript :
Data values passed to a function are called arguments, enclosed in parantheses. Multiple data values passed to a function are separated using a comma
var my Array= new Array(100); what's the purpose of 100?
Declares the initial size and allocates memory
$(document).ready(function(){ $("img").dblclick(function(){ $(".test").hide(); }); });
Double click an HTML tag element
A single Web page can contain a most one form.T/F
False
jQuery Events are not specific to respond to fired events in an HTML page. T/F
False
jQuery animation cannot be stopped once it's started. T/F
False
var mathClass = new Math();. When using functions from the MAth object you must declare an instance of the Math object.
False
Data hierarchy comprises bits, characters, records, files and
Fields
Variables declared outside of functions that can be used or changed anywhere in the program are called
Global variables
JavaScript is used to enhance ___ Web pages for an interactive experience.
HTML
Which positional numbering system includes valid values 0-9 and A-F
Hex
JavaScript can
Improve website usability
<script> var counter = 0; while( counter < 5 ) { document.writeln( counter * 2); } What's the output?
Infinite loop
Javascript programs are executed by a JavaScript _______ in a Web Browser
Interpreter
In the computer science the UNIX start date is defined as starting on
January 1, 1970 )):00:00:00
jQuery is a ___ library to simplify JavaScript programming.
JavaScript
$(document).ready(function(){ $("#updownmouse").mousedown(function(){ alert("Mouse down over footprint!"); }); });
Left mouse button is pressed down over the HTML element
Numeric Arrays use ___ as their index value and associative array use ___ as their index value
Numbers, strings
Kerning is the space between ___, while tracking is the space between ___.
Letters, words
<br> element is known as
Line break
A valid color gradient in CSS
Linear Radial Repeating
What are the three ways to create an array in JavaScript?
Literal, Regular, Condensed
&& and || are
Logical operators
JavaScript is a ___ programming language.
Loosely typed
78. There are two attributes of the Date object that start at 0 rather than 1, just to mess with us mere humans ☺, which attributes illogically start at 0 even though day of the month starts at 1?
Month and Day of the Week
<script> var asterisk = "*"; for (var row = 0; row < 10; row++) { for (var column = 0; column < row; column++) { document.writeln(asterisk); } document.writeln("<br>"); } </script> This is an example of what type of loop
Nested loop
When using the typeof() function what does a value of null mean?
No valid data type
function setLetter(word,letter, display) How many arguments must be passed for the function to compile?
None are required to compile or run
What is the result of jQuery function $(document).ready(function(){ $("input").focus(function(){ $(this).css("background- color","#cccccc"); }); $("input").blur(function(){ $(this).css("background-color","#ffffff"); }); }); when the user's mouse has focus on then loses focus of the HTML element <input />?
On focus the background color chages to #ccccccc, lose focus the background color changes to #ffff
JavaScript is a client-side language because it works
On the local computer
Local variables aredeclared inside of JavaScript functions and can be used or modified
Only in the functions they are declared
When a function is defined in JavaScript the expected received data values are called
Parameters
76. var index = word.search( letter ); uses which String object method?
Search
When defining a clickable area of an image map, what are the shape options
Rect Circle Poly
var weekdays = new Array(); weekdays[0] = "Monday"; weekdays[1] = "Tuesday"; weekdays[2] = "Wednesday"; weekdays[3] = "Thursday"; weekdays[4] = "Friday"; What format is this
Regular
The JavaScript logical not operator (!) results in the
Reverse evaluation of the condition
$(document).ready(function(){ $("button").click(function(){ $("#test").hide(); }); });
Single click an HTML tag element
Primitive data types are assigned
Single literal values
When asked to develop unobtrusive JAvaScript this means that the JavaScript is
Stored in an external file with a .is file extention
var num1 = 8675; var myString = String(num1); var result = myString + 309; alert("String result is " + result); What's the output?
String result is 8675309
Operands can be of data type
String, Numeric, Boolean
75. word = word.substr( 0, index ) + '-' + word.substr( index + 1 ); uses which String object method?
Substring
switch (color) { case "blue": alert("cold"); case "red": alert("hot"); default: alert("No temperature selected"); } What is this?
Switch, multi-way decision, Alternative to the if/else condition
What are the two types of drop shadows available in CSS
Text and box
What does would var date = new Date(); return when printed?
The day of the week, date, time, and time zone of the time the function was executed.
Assuming good HTML form and embedded <script></script>, when using concatenation what output would display based on the statement: document,write("The temperature is " +89);
The temperature is89
User-defined Objects are composite data types. T/F
True
var date= new Date(14,9,22);
Thu Oct 22 1914 00:00:00 <some time zone depending upon the computer>
All selectors in jQuery start with $(). T/F
True
CSS is the style sheet language used to specify the appearance of the HTML page
True
HTML tag element <input> is an HTML button. T/F
True
JQuery queue functionality allows for multiple animate function calls in one function that are called sequentially on a single HTML, tag element. T/F
True
Composite data types, also known as comples types, consist of more than one component. Valid composite data types include all of the following(Functions,Objets, Arrays) BUT
Undefined
CSS precedence begins at the broadest definition and finishes with the most finite defintion; browser, user-defined, external, embedded, and inline. How can you force the highest level of precedence?
Use keyword !important
To set a style rule using CSS you must include the selector, property, and
Value
if("14" = = 14) alert("Values are equal"); else if("14" = = = 14) alert("Values are identical"); else alert("Values are not equal or identical"); what would be the displayed to the user in an alert dialog box?
Values are equal
Anonymous funcitons in JavaScript are unique because its definition is assigned to a ___ since they don't have a ___.
Variable, name
What is the purpose of $(document).ready(function (){})
Verifies the document is finished loading before performing any actions
Variable scope in JavaScript defines where the variable is___ in the program or where it can be used.
Visible
Difference between a while loop and a do/while loop
While loops executes 0...n times; do/while loop executes 1...n times.
Example 1: dog.breed = "German Shepard"; Example 2: dog["breed"] = "German Shepard"; Do they have equivalent results?
Yes
Well-formed statements written in JavaScript end with
a semi colon ;
When creating an array in JavaScript using varmyArray= new Array();, Array() is called a
contructor
HTML tag <img> is used to insert an ___ in the document.
image
What is <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"> </script> referencing?
jQuery library
<script type="text/javascript" src="jquery.timers-1.1.2.js" ></script> What's it referencing?
jQuery timers
In computer science the date/time is measured in
milliseconds
To group options buttons so that selecting one deselects all of the others, you must make the ___ attribute the same
name
positional numbeirng system's valid value range from 0-7, 10-17, 20-27, etc
octal
Option buttons are sometimes called
radio buttons
A valid color definition method in CSS
rgb(200,100,50) hsl(38,40%,20%) #99CCDD
JQuery is tailored for selecting HTML elements to perform an action, as a result___ are the most important part of jQuery
selectors
Which input type creates a field that is not viewable on the form?
type="hidden"
When naming variables, these are valid: var message; var_9; varfive5s; BUT
var#343489;
What are three looping constructs in JavaScript
while, do/while, for
