Test your basic knowledge |

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. The string escape sequence to insert a vertical tab in JavaScript
v
expression
getTime()
Use the second parameter. Example: prompt("Enter Age:", "18")

2. To create a Date object in JavaScript
semicolon ";"
document.writeln("Text Here") //Advances to new line after text
expression
var dateVar = new Date()

3. The string escape sequence to insert a backslash in JavaScript
document.getElementById("CheckboxId").checked = true; //Could also be false
\
toFixed(digitCount)
document.getElementById("radioButtonId").checked = true; //Could also be false

4. The format to create a new Date object from a string
substring(startIndex, stopIndex)
var functionName = function(param1, param2, paramN) {}
var dateObject = new Date("11/22/2012 18:25:35")
string

5. A statement that yields a value
expression
r
toDateString()
<noscript>

6. A list-like construct that has properties which corresponds to JavaScript values or variables or other objects.
confirm("Message Text Here")
document.getElementById("radioButtonId").checked;
v
Objects

7. A function that is called with a certain event occurs - e.g. button.onclick and window.onload.
semicolon ";"
toExponential(digits)
var dateObject = new Date(year, month, day, hours, minutes, seconds, milliseconds)
event handler .

8. To create a function that returns a value in JavaScript
var functionName = function(param1, param2, paramN) {}
document.getElementById("TextBoxId").focus;
toTimeString()
document.getElementById(id)

9. The identity operator for equals
document.getElementById("radioButtonId").checked;
===
Math.ceil(number)
semicolon ";"

10. A _______ variable can be changed and accessed from within and without a function or object.
<noscript>
semicolon ";"
document.getElementById("TextBoxId").focus;
global

11. The four attributes of the <script> tag:Type - Src - _____ and Defer
Charset
Math.pow(number, power)
document.getElementById("listId").value;
var functionName = function(param1, param2, paramN) {}

12. The string escape sequence to insert a tab in JavaScript
window.onload = function() {//actions here}
Math.random() //Returns a value >= 0.0 but <1.0
var dateObject = new Date(year, month, day, hours, minutes, seconds, milliseconds)
t

13. Statements end in JavaScript with a ________
semicolon ";"
toString(base)
var stringVar = prompt("Text Here")
toTimeString()

14. To alter the value of the text element in a span tag
document.getElementById("TextBoxId").value;
Math.min(var1, var2, varN)
document.getElementById("spanId").firstChild.nodeValue = "New Value";
document.getElementById(id)

15. When you add a string and a number the result will be a ____
toLowerCase()
string
f
Underscores

16. The string escape sequence to insert a carriage return in JavaScript
redeclare
<noscript>
r
'

17. Date object method used to return a string containing the date
toDateString()
<noscript>
event handler .
Number.NEGATIVE_INFINITY

18. To get the value or the currently selected item for lists
document.getElementById("listId").value;
Math.max(var1, var2, varN)
indexOf(searchValue, startPosition)
semicolon ";"

19. The available get methods for a Date object: getTime() - _________ - getMonth() - getDate() - getHours() - getMinutes() - getSeconds() - getMilliseconds()
getFullYear()
standard equality operators
Multi line
window.location = "New Web Address Here";

20. Math object method used to return a given number rounded to the next lowest integer value
Math.floor(number)
Number.NEGATIVE_INFINITY
while (condition) {}
indexOf(searchValue, startPosition)

21. What Date object method is used to return the number of milliseconds since the start of GMT
window.location = "New Web Address Here";
document.getElementById("spanId").firstChild.nodeValue = "New Value";
standard equality operators
getTime()

22. Number object method used to return a number in exponential format with the specified number of decimal places
document.write("Text Here") //Remains on current line
var functionName = function(param1, param2, paramN) {}
toExponential(digits)
standard equality operators

23. To write a line to the current element of the DOM (Document Object Model)
document.getElementById("spanId").firstChild.nodeValue = "New Value";
while (condition) {}
toString(base)
document.writeln("Text Here") //Advances to new line after text

24. String object method used to concatenate multiple strings
prompt("Text Here")
string
document.getElementById("spanId").firstChild;
concat(var1, var2, varN)

25. What String object method returns a new string containing the value of the original string but in all lower case
Math.abs(number)
document.write("Text Here") //Remains on current line
document.getElementById("listId").value;
toLowerCase()

26. The string escape sequence to start a new line in JavaScript
toUpperCase()
Charset
n
Math.sqrt(number)

27. To view the current web address using JavaScript
window.location()
Math.abs(number)
\
toFixed(digits)

28. The available properties for the Number object: Number.MAX_VALUE - Number.MIN_VALUE - Number.POSITIVE_INFINITY - _______ - Number.NaN
var variableName;
alert("Alert Text Here")
window.location = "New Web Address Here";
Number.NEGATIVE_INFINITY

29. Math object method used to return the absolute value of a given number
window.location = "New Web Address Here";
Math.abs(number)
ondblclick
f

30. String object method used to return a new string that contains part of the original string from the specified start position
Src - e.g. <script src="fileName.js"> //
<script type="text/javascript">.....</script>
substring(startIndex, stopIndex)
substring(startIndex)

31. JavaScript is case _______
Two forward slashes "//"
sensitive
var dateObject = new Date("11/22/2012 18:25:35")
event handler .

32. Number object method used to round numbers to the specified number of decimal places
===
isNaN(varHere) //Returns true or false.
var arrayVar = new Array()
toFixed(digits)

33. To get the current checked status of the control for radio buttons
document.getElementById("ButtonId").onclick = functionName;
var dateObject = new Date(year, month, day, hours, minutes, seconds, milliseconds)
toExponential(digits)
document.getElementById("radioButtonId").checked;

34. ________ comments start with / and end with /.
Multi line
var functionName = function(param1, param2, paramN) {}
f
Math.min(var1, var2, varN)

35. The available set methods for a Date object: setFullYear() - setMonth() - setDate() - setHours() - setMinutes() - setSeconds() - _________
setMilliseconds()
t
Math.pow(number, power)
document.getElementById("TextBoxId").focus;

36. To get the current value of the control for a text area
toUpperCase()
document.write("Text Here") //Remains on current line
document.getElementById("textAreaId").value;
Underscores

37. To set the current value of the control for a text area
getFullYear()
r
for (counter; condition; incrementor) {}
document.getElementById("textAreaId").value = "Text Value";

38. Math object method used to return a given number rounded to the next highest integer value
document.getElementById("checkboxId").value;
Math.min(var1, var2, varN)
Math.ceil(number)
Either single or double quotes surrounding the data

39. To assign the value from a prompt to a string
toExponential(digits)
var stringVar = prompt("Text Here")
Math.min(var1, var2, varN)
var stringVar = "part 1:" + "part 2";

40. What String object method returns a new string containing the value of the original string but in all upper case
if (condition) {}
var arrayVar = new Array()
toUpperCase()
toTimeString()

41. To assign the return value of confirm() to a variable
var answerVar = confirm("Message Text Here")
expression
event handler .
Use the second parameter. Example: prompt("Enter Age:", "18")

42. 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

43. Date object method used to return a string containing the time
Multi line
document.getElementById("listId").value;
<noscript>
toTimeString()

44. The string escape sequence to insert a double quote in JavaScript
Src - e.g. <script src="fileName.js"> //
toString(base)
"
document.getElementById(id)

45. Date object method used to return a string containing the date and time
document.getElementById("radioButtonId").checked;
toString()
var functionName = function(param1, param2, paramN) {}
confirm("Message Text Here")

46. To code an If statement in JavaScript
document.getElementById("TextBoxId").focus;
if (condition) {}
toPrecision(precision)
Math.max(var1, var2, varN)

47. The events common to most controls: onfocus - onblur - onclick - _______ - onchange - onselect
toFixed(digitCount)
global
Src - e.g. <script src="fileName.js"> //
ondblclick

48. Math object method used to return the highest value from a set of supplied numbers
var answerVar = confirm("Message Text Here")
Math.max(var1, var2, varN)
document.getElementById("CheckboxId").checked = true; //Could also be false
toExponential(digits)

49. The string escape sequence to insert a form feed in JavaScript
confirm()
f
Objects
Src - e.g. <script src="fileName.js"> //

50. Command to display a prompt
semicolon ";"
Math.floor(number)
if (condition) {}
prompt("Text Here")