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Javascript Basics

Subject : it-skills

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. To set focus on the control for textboxes
\
sensitive
document.getElementById("TextBoxId").focus;
setMilliseconds()

2. String object method used to return a new string that contains part of the original string from the specified start position
var arrayVar = new Array()
"
substring(startIndex)
var functionName = function(param1, param2, paramN) {}

3. When you add a string and a number the result will be a ____
substring(startIndex)
\
confirm()
string

4. To assign the value from a prompt to a non-string variable
Charset
Math.ceil(number)
var arrayVar = new Array()
Use a parse. Example : var intVar = parseInt(prompt("Text Here"))

5. When you __________ a javascript variable it retains its original value
Math.round(number)
getFullYear()
redeclare
Multi line

6. To get the text value of the control for radio buttons
Math.ceil(number)
getTime()
document.getElementById("checkboxId").value;
substring(startIndex)

7. The string escape sequence to insert a vertical tab in JavaScript
expression
confirm()
v
toLowerCase()

8. To access a page element by id
semicolon ";"
getTime()
document.getElementById(id)
document.getElementById("radioButtonId").value;

9. To create an Array object in JavaScript
var arrayVar = new Array()
getFullYear()
for (counter; condition; incrementor) {}
redeclare

10. The _____ attribute is used to denote external file for script use
event handler .
Number.NEGATIVE_INFINITY
Math.pow(number, power)
Src - e.g. <script src="fileName.js"> //

11. Command to display a prompt
var arrayVar = new Array()
toPrecision(precision)
Math.ceil(number)
prompt("Text Here")

12. To get the value or the currently selected item for lists
while (condition) {}
document.getElementById("listId").value;
document.writeln("Text Here") //Advances to new line after text
toFixed(digits)

13. Math object method used to return the absolute value of a given number
Math.abs(number)
Math.random() //Returns a value >= 0.0 but <1.0
standard equality operators
document.getElementById("ButtonId").onclick = functionName;

14. To set the current checked status of the control for checkboxes
document.getElementById("CheckboxId").checked = true; //Could also be false
var dateObject = new Date("11/22/2012 18:25:35")
var stringVar = prompt("Text Here")
document.getElementById("spanId").firstChild;

15. A statement that yields a value
Src - e.g. <script src="fileName.js"> //
var variableName;
toString()
expression

16. The format to create a new Date object from a string
document.getElementById("radioButtonId").checked = true; //Could also be false
Objects
var dateObject = new Date("11/22/2012 18:25:35")
document.getElementById("textAreaId").value;

17. To create a Date object in JavaScript
toUpperCase()
var dateVar = new Date()
<script type="text/javascript">.....</script>
window.location = "New Web Address Here";

18. The identity operator for equals
Math.abs(number)
if (condition) {}
===
Math.ceil(number)

19. To create a function in JavaScript
var functionName = function(param1, param2, paramN) {}
prompt("Text Here")
document.getElementById("checkboxId").checked;
Charset

20. The available properties for the Number object: Number.MAX_VALUE - Number.MIN_VALUE - Number.POSITIVE_INFINITY - _______ - Number.NaN
Number.NEGATIVE_INFINITY
document.getElementById("spanId").firstChild;
document.getElementById("CheckboxId").checked = true; //Could also be false
toLowerCase()

21. To get the current value of the control for a text area
Math.abs(number)
document.getElementById("textAreaId").value;
string
<script type="text/javascript">.....</script>

22. To code a for statement in JavaScript
===
"
for (counter; condition; incrementor) {}
document.getElementById("spanId").firstChild.nodeValue = "New Value";

23. Math object method used to return a given number that has been rounded to the closes integer value
alert("Alert Text Here")
Math.abs(number)
substring(startIndex, stopIndex)
Math.round(number)

24. The identity operator for not equal
!==
n
Math.random() //Returns a value >= 0.0 but <1.0
expression

25. The events common to most controls: onfocus - onblur - onclick - _______ - onchange - onselect
toDateString()
document.getElementById("radioButtonId").checked = true; //Could also be false
ondblclick
global

26. String object method used to concatenate multiple strings
concat(var1, var2, varN)
setMilliseconds()
Math.random() //Returns a value >= 0.0 but <1.0
===

27. The available get methods for a Date object: getTime() - _________ - getMonth() - getDate() - getHours() - getMinutes() - getSeconds() - getMilliseconds()
toExponential(digits)
getFullYear()
Math.ceil(number)
Src - e.g. <script src="fileName.js"> //

28. Math object method used to return a random number
Charset
Math.random() //Returns a value >= 0.0 but <1.0
var variableName;
focus

29. Date object method used to return a string containing the date
toDateString()
indexOf(searchValue, startPosition)
f
r

30. To assign the value from a prompt to a string
expression
var stringVar = prompt("Text Here")
document.getElementById("ButtonId").onclick = functionName;
toUpperCase()

31. The available set methods for a Date object: setFullYear() - setMonth() - setDate() - setHours() - setMinutes() - setSeconds() - _________
setMilliseconds()
Use a parse. Example : var intVar = parseInt(prompt("Text Here"))
toTimeString()
(Condition_Expression) ? Value_If_True : Value_If_False;

32. To code an If statement in JavaScript
if (condition) {}
sensitive
ondblclick
getFullYear()

33. To set the current checked status of the control for radio buttons
document.getElementById("radioButtonId").checked = true; //Could also be false
Multi line
substring(startIndex, stopIndex)
setMilliseconds()

34. To display an alert
!==
var functionName = function(param1, param2, paramN) {}
n
alert("Alert Text Here")

35. To get the text value of the control for radio buttons
Charset
isNaN(varHere) //Returns true or false.
var dateVar = new Date()
document.getElementById("radioButtonId").value;

36. To assign the return value of confirm() to a variable
"
document.getElementById("checkboxId").checked;
var answerVar = confirm("Message Text Here")
var arrayVar = new Array()

37. To access the text element in a <span> tag
document.getElementById("spanId").firstChild;
toDateString()
udddd
Math.random() //Returns a value >= 0.0 but <1.0

38. Number object method used to return a numerical string with the specified number of significant digits
toPrecision(precision)
document.getElementById("CheckboxId").checked = true; //Could also be false
r
document.write("Text Here") //Remains on current line

39. String object method used to return a new string that contains part of the original string from the specified start position and up to but not including the specified stop index
Multi line
document.getElementById("radioButtonId").checked = true; //Could also be false
expression
substring(startIndex, stopIndex)

40. To display a confirmation
toUpperCase()
document.getElementById("textAreaId").value;
confirm("Message Text Here")
var variableName;

41. The valid characters for an identifier in JavaScript: Letters - Numbers - ________ and Dollar Signs
Math.random() //Returns a value >= 0.0 but <1.0
document.getElementById("listId").value;
setMilliseconds()
Underscores

42. The string escape sequence to insert a backslash in JavaScript
substring(startIndex, stopIndex)
toFixed(digits)
document.write("Text Here") //Remains on current line
\

43. The string escape sequence to insert a single quote in JavaScript

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

44. To concatenate multiple parts into a string
Use a parse. Example : var intVar = parseInt(prompt("Text Here"))
var stringVar = "part 1:" + "part 2";
document.getElementById("listId").value;
<noscript>

45. To code a while statement in JavaScript
charAt(position)
setMilliseconds()
while (condition) {}
document.write("Text Here") //Remains on current line

46. To assign actions to the window onLoad event
Charset
window.onload = function() {//actions here}
document.getElementById("listId").value;
toLowerCase()

47. String object method used to get the character at a specified index position
window.location = "New Web Address Here";
var dateObject = new Date("11/22/2012 18:25:35")
!==
charAt(position)

48. To create a new Date object
Underscores
Use a parse. Example : var intVar = parseInt(prompt("Text Here"))
Math.floor(number)
var dateObject = new Date(year, month, day, hours, minutes, seconds, milliseconds)

49. To get the current checked status of the control for checkboxes
toDateString()
document.getElementById("checkboxId").checked;
<script type="text/javascript">.....</script>
document.write("Text Here") //Remains on current line

50. To alter the value of the text element in a span tag
Use the second parameter. Example: prompt("Enter Age:", "18")
document.getElementById("radioButtonId").value;
document.getElementById("spanId").firstChild.nodeValue = "New Value";
===