Section 1
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Which of the following is the JavaScript escape character? A. " B. ' C. \ D. /
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Cards (105)
Section 1
(50 cards)
Which of the following is the JavaScript escape character? A. " B. ' C. \ D. /
C. \
Which of the following is an arithmetic binary operator? A. + B. | | C. = D. &&
A. +
What organization oversees the development of web technology standards? A. U.S Department of Defense B. World Wide Web Consortium C. Stanford Unoveristy D. United Nations
B. World Wide Web Consortium (W3C)
A switch statement compares the value of an expression to a value contained in a(n) _____ . A. default label B. case label C. fallthrough D. break statement
B. case label
Which of the following creates a local variable A. Declaring it outside of a function with the var keyword B. Declaring it outside of a function without the var keyword C. Declaring it inside of a function with the var keyword D. Declaring it inside of a function without the var keyword
C. Declaring it inside of a function with the var keyword.
A simple if/else statement enables you to specify code for _____ alternatives. A. 2 B. 3 C. 4 D. unlimited
A. 2
Which type of error occurs when the interpreter fails to recognize code? A. Debugging B. Syntax C. Run-time D. Logic
B. Syntax
An if statement can include multiple statements provided that they _____ . A. execute after the if statement's closing semicolon B. are not contained within a command block C. do not include other if statements D. are contained within a command block
D. are contained within a command block
________ is a separate, complementary language to HTML that was developed for specifying the appearance of web page elements. A. XHTML B. SGML C. XML D. CSS
D. CSS
The markup language originally developed to create web pages and still in use today is called _______? A. HTML B. SGML C. XML D. CSS
A. HTML (Hypertext Markup Language)
When you assign a specific value to a variable on its creation, you ______ it. A. Declare B. Call C. Assign D. Initialize
D. Initialize
Which of the following describes JavaScript? A. Strongly Typed B. Statically Typed C. Loosely Typed D. Untyped
C. Loosely Typed
Which of the following is a valid JavaScript statement? A. document.write('Boston, MA is called 'Beantown.'') B. document.write("Boston,MA is called "Beantown."") C. document.write("Boston,MA is called 'Beantown."') D. document.write("Boston,MA is called 'Beantown.'")
D. document.write("Boston, MA is called 'Beantown.'")
A section of a document that is not interpreted as markup is referred to as _____ . A. PDATA B. CDATA C. PCDATA D. CPDATA
B. CDATA
Which of the following uses the correct case? A. Document.write() B. document.write() C. document.Write() D. Document.Write()
B. document.write()
A(n) _____ allows you to execute a related group of statements as a single unit. A. Variable B. Statement C. Event D. Function
D. Function
Which of the following properties returns the number of elements in an array? A. length B. size C. elements D. indexes
A. length
The statements in a(n) _____ statement always execute at least once. A. for B. do/while C. switch D. if
B. do/while
A system consisting of a client and a server is known as a ________. A. Mainframe Topology B. Double-System Architecture C. Two-Tier System D. Wide area network
C. Two-Tier System
Code that tells a browser what to do in response to a specific event on a specific element is called a(n) _______. A. Method B. Event Handler C. Response D. Procedure
B. Event Handler
What is usually the primary role of a client? A. Locating records that match a request B. Heavy processing, such as calculations C. Data Storage D. The presentation of an interface to the user
D. The presentation of an interface to the user`
A variable is declared outside a function is called a(n) _____ variable. A. Class B. Local C. Global D. Program
C. Global
Which method displays a dialog box with an OK button? A. document.write() B. document.writeIn() C. window.alert() D. window.popup()
C. window.alert()
Which of the following is a Boolean value? A. 3.04 B. true C. "Greece" D. 6.02e23
B. true
Elements that do not require a closing tag are called ______ elements. A. Independent B. Empty C. Permanent D. Constant
B. Empty
Which of the following is a concatenation operator? A. > B. + C. | | D. ++
B. +
Which of the following statements causes a syntax error? A. var firstName = ""; B. document.write(Availble points: " + availPoints); C. readyState = true; D. "use strict";
B. document.write(Available points: " + availablePoints);
What is the root element of an HTML document? A. Head B. Body C. HTML D. Script
A. Head
The _____ statement halts a looping statement and restarts the loop with a new iteration. A. restart B. continue C. break D. halt
B. continue
What is the result of the statement 5 < 4? A. 1 B. yes C. true D. false
D. False
Which of the following statements writes the value of the selection variable to the console? A. colsole.log("selection"); B. document.console("selection"); C. console.alert(selection); D. console.log(selection);
D. console.log(selection);
_____ errors are problems in the design of a program that prevent it from running as you anticipate. A. Application B. Syntax C. Logic D. Run-time
C. Logic
The _____ statement is equivalent to the conditional operator(?:). A. if B. if/else C. nested if D. switch
B. if/else
Which of the following creates an empty string? A. null B. undefined C. "" D. 0
C. ""
Parameters in a function definition are placed within _____ . A. Braces B. Parentheses C. Double Quotes D. Single Quotes
B. parentheses
If you do not include code that changes the counter value in a loop statement, your program will be caught in a(n) _____ . A. Iteration B. Condition C. Fall through D. Infinite loop
D. Infinite Loop
Which of the following is NOT a valid identifier? A. $InterestRate B. 2QInterest Rate C. interestRate D. _interestRate
B. 2QInterest Rate
Which characters are used to create a command block? A. ( ) B. [ ] C. { } D. <>
C. { }
Which of the following statements adds the value "oak" as the third element of the trees array? A. trees += "oak"; B. trees += "", "", "oak"; C. trees[2] = "oak"; D. trees[3]= "oak";
C. trees[2] = "oak";
Which of the following is an arithmetic unary operator? A. ++ B. | | C. = D. &&
A. ++
Which of the following is a primitive data type in JavaScript? A. Boolean B. Integer C. Floating-Point D. Logical
A. Boolean
A URL is a type of _____? A. Web Page B. URI C. Link D. Network
C. Link
When the value returned by a switch statement expression does not match a case label, then the statements within the _____ label execute. A. error B. else C. exception D. default
D. default
What is the correct syntax for creating an empty array named taxRules? A. var taxRules = {}; B. var taxRules; C. var taxRules = [ ]; D. var taxRules[5];
C. var taxRules = [ ];
Which of the following is an integer? A. -2.5 B. 6.02e23 C. -11 D. 0.0
C. -11
The parentheses at the start of a(n) _____ statement can include code that initializes a counter and changes its value with each iteration. A. while B. do C. do/while D. for
D. For
You track the progress of a loop with a(n) _____ . A. Counter B. Iteration C. Increment D. Decrement
A. counter
When is a for statement initialization expression executed? A. When the for statement begins executing B. With each repetition of the for statement C. When the counter variable is incremented D. When the for statement ends
A. When the for statement begins executing.
Which of the following functions does the processing tier NOT handle in a three-tier client/server system? A. Processing and Calculations B. Reading and writing of information to the data storage tier C. The return of any information to the client tier D. Data storage
D. Data Storage
When a JavaScript interpreter encounters a problem while a program is executing, that problem is called a(n) _____ error. A. application B. syntax C. logic D. run-time
D. run-time
Section 2
(50 cards)
Which method of the Math class rounds a value to the next lowest integer? A. floor() B. max() C. min() D. round()
D. round()
Which of the following is the correct syntax for accessing an element with the id value headline? A. document.getElementsByID("headline") B. document.getElementById("headline") C. document.getElementByID("headline") D. document.getElementById(headline)
B. document.getElementById("headline")
Which of the following is the correct syntax for accessing the value of the href attribute for the third a element in a document? A. document.getElementsByTagName("a") [2].href B. document.getElementsByTagName("a") [3].href C. document.getElementsByTagName("a").href D. document.getElementsByTagName("href") [3]
A. document.getElementsByTagName("a") [2].href
Which event do you use to call a function when a user selects a field or moves the insertion point into a field? A. blur B. focus C. input D. forminput
B. focus
In the browser object model, the History object is a _____ object to the Location object. A. parent B. grandparent C. sibling D. child
C. sibling
Which statement moves the browser to the top of the page? A. scroll(top) B. scroll(0,0) C. move(top) D. move(0,0)
B. scroll(0,0)
Which event do you use to call a function when a field is no longer selected, or a user moves the insertion point to a different field? A. blur B. focus C. click D. forminput
A. blur
Which Number method converts a number to a string using a specified number of decimal places? A. toFixed() B. toLocalString() C. toString() D. valueof()
A. toFixed()
The watch list in browser debugging tools lets you monitor the value of a(n) _____ during program execution. A. function B. exception handler C. expression D. statement
C. expression
To simulate the behavior of placeholder text in older browsers, you can instead set the value of the _____ property. A. src B. alt C. title D. value
D. value
For many fields that require numeric values, you can use JavaScript's built-in _____ function to determine whether the user actually entered a number. A.value() B. integer() C. isNumber() D. isNaN()
D. isNaN()
Which of the following attributes for form child elements would you use for a field that must have a value before the form can be submitted? A. novalidate B. min C. required D. max
C. required
A set of connected nodes that are NOT part of a document is known as a(n) _____ . A. history list B. node list C. HTML collection D. document fragment
D. document fragment
In object-oriented programming, a(n) _______ is a template, or blueprint, that serves as the basis for new objects. A. instance B. object C. method D. class
D. class
Which Number method converts a number to a string that is formatted with local numeric formatting style? A. toFixed() B. toLocalString() C. toString() D. valueof()
B. toLocalString()
Which of the following input type values triggers browser-based validation in modern browsers? A. password B. text C. radio D. number
D. number
The properties of which object describe a user's browser? A. History B. Location C. Navigator D. Screen
C. Navigator
How do you control a new window that you have created with JavaScript code?. A. You cannot control a new window with JavaScript code. B. Assign the new Window object created with the window.open() method to a variable. C. Use the name argument of the window.open() method. D. Use the name argument of the document.open() method.
B. Assign the new Window object created with the window.open() method to a variable.
Which of the following type values for the input element does NOT enable you to provide users with a limited set of choices? A. radio B. email C. checkbox D. range
B. email
After you throw an error, you use a(n) _____ statement to handle the error. A. try B. throw C. catch D. finally
C. catch
What do you assign to the value property of a text box to remove its contents? A. false B. true C. "" D. null
C. ""
Objects representing each of the controls in a form are stored in the _____ collection. A. forms B. controls C. inputs D. elements
D. elements
Which of the following modes temporarily suspends, or pauses, program execution so that you can monitor values and trace program execution? A. Suspend B. Step C. Break D. Continue
C. Break
Which of the following attributes triggers browser-based validation in modern browsers? A. max B. title C. alt D. src
A. max
Which of the following pieces of information is passed as an argument from a throw statement to a catch statement? A. Error number B. Error message C. Line number D. URL
B. Error message
What value of the selectedIndex property of a select object corresponds to no selection? A. -1 B. 0 C. q D. false
A. -1
Which command executes all statements in the next function in browser debugging tools? A. Step Out B. Step Over C. Step D. Step in/into
B. Step Over
Each item in the DOM tree is known as a _____ . A. node B. document C. object D. element
A. node
In _____ , some features are removed from the JS language, while other features require more stringent syntax. A. exception handling B. strict mode C. debugging tools D. debugger mode
B. strict mode
Which of the following properties has a value of true when a user has left a required field blank? A. required B. valueMissing C. patternMismatch D. typeMismatch
B. valueMissing
What is the primary reason for using any of the "to" methods if the Number class? A. To convert a number for use in calculations B. To format a date C. To perform calculations D. To convert a number that will be displayed to a user
D. To convert a number that will be displayed to a user
What method do you use to disable the default behavior for an event? A. preventDefault() B. checkValidity() C. select() D. getElementById()
A. preventDefault()
Which of the following statements creates an empty object with the name registry? A. var registry; B. var registry = {}; C. var registry = ""; D. var registry = [];
B. var registry = {};
Which of the following objects is also referred to as the global object? A. Browser object B. Screen object C. Document object D. Window object
D. Window Object
Which object allows you to change to a new, unvisited web page from within JavaScript code? A. History B. Location C. Navigator D. Screen
B. Location
Which of the following is the correct syntax for using the getElementsByTaglName() method to return all of the document's p elements? A. document.getElementsByTagName("<p>") B. document.getElementsByTagName("p") C. document.getElementsByTagName(<p>) D. document.getElementsByTagName() = ""
B. document.getElementsByTagName("p")
Which method allows you to insert a node at a position among its sibling nodes that you specify? A. createElement() B. appendChild() C. cloneNode() D. insertBefore()
D. insertBefore()
In object-oriented programming, a(n) _________ is an object that has been created from an existing template. A. instance B. property C. method D. class
A. instance
Which of the following Date class constructors creates a Date object that contains the current date and time from the local computer? A. Date() B. Date(milliseconds) C. Date(date_string) D. Date(year, month[, date, hours, minutes, seconds, milliseconds])
A. Date()
Which of the following parts of a date value are stored in a Date object using numeric representations, starting with zero, similar to an array? A. Day of the month B. Month C. Year D. AM/PM
B. Month
Which of the following exception handling code executes regardless of whether its associated try block throws an exception? A. throw "Please enter your last name."; B. catch(lNameError) { return false; } C. catch(lNameError) { window.alert(lNameError) return false; } D. finally { lNameValid = true; }
D. finally { lNameValid = true; }
What statement can you add to your code to effectively serve the same role as a breakpoint? A. break; B. breakpoint; C. debug; D. debugger;
D. debugger;
To make a window the active window, you use the _____ method of the Window object. A. focus () B. open () C. close () D. active ()
A. focus ()
Which method do you use to execute code only once after a specific amount of time has elapsed? A. setTimeout() B. setInterval() C. clearTimeout() D. clearInterval()
A. setTimeout()
Which of the following for statements is logically incorrect? A. for (var count = 10; count <= 0; count++) {document.write(count);} B. for (var count = 0; count <= 10: count++) {document.write (count); } C. for (var count = 10; count <= 0: count++) {document.write(count); } D. for (var count = 5; count <= 0: count++) {document.write(count); }
A. for (var count = 10; count <= 0: count++) {document.write(count); }
Which of the following attributes determines whether a check box or option button is selected? A. checked B. defaultChecked C. selected D. focus
A. checked
The _____ is the ordered list maintained by a JS processor containing all the procedures, such as functions, methods, or events, that have been called but have not yet finished processing. A. variables list B. watch list C. strict mode D. call stack
D. call stack
What is the correct syntax for rounding the number 39.75 to the nearest integer? A. new Match = round(39.75); B. var matchCalc = new Match(round(39.75)); C. Match.round(39.75); D. round(39.75);
C. math.round(39.75);
Which method do you use to execute code repeatedly, with a specific amount of time between each execution? A. setTimeout() B. setInterval() C. clearTimeout() D. clearInterval()
B. setInterval()
How do you increase the likelihood that a new window you create with the window.open() method will open as a new window rather than a new tab? A. Specify a window=true option B. Specify a height and/or a width value. C. Ensure the method is initiated by a user action. D. Close all open tabs in the user's browser.
B. Specify a height and/or a width value
Section 3
(5 cards)