1. Chapter 2 Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc.Slide 1

2. Objectives Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 2

3. Objectives (continued) Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 3

4. Objectives (continued) Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 4

5. Two attributes of the script element Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 5

6. A script element that embeds JavaScript in the head section Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 6

7. Terms Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 7

8. JavaScript in the body of an HTML document Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 8

9. The result of the JavaScript in a web browser Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 9

10. A noscript element in the body of the HTML Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 10

11. A block of JavaScript code Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 11

12. The basic syntax rules for JavaScript Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 12

13. How to split a statement over two or more lines Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 13

14. Rules for creating identifiers Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 14

15. Valid identifiers in JavaScript Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 15

16. Camel casing versus underscore notation Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 16

17. Naming recommendations Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 17

18. JavaScript code that includes comments Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 18

19. The syntax rules for JavaScript comments Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 19

20. Guidelines for using comments Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 20

21. Terms Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 21

22. Common methods of the window object Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 22

23. A statement that calls the prompt method with the object name omitted Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 23

24. One property of the window object Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 24

25. Terms related to objects Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 25

26. Number, string, and Boolean values Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 26

27. Terms related to data types Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 27

28. Common arithmetic operators Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 28

29. The order of precedence for arithmetic expressions Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 29

30. Terms related to numeric expressions Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 30

31. The most useful assignment operators Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 31

32. How to code compound assignment statements Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 32

33. Three ways to increment a counter variable Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 33

34. A floating-point result that isn’t precise Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 34

35. Terms for working with variables Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 35

36. The concatenation operator for strings Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 36

37. Escape sequences that can be used in strings Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 37

38. How to declare string variables Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 38

39. How to code compound assignment statements Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 39

40. How escape sequences can be used in a string Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 40

41. How to declare Boolean variables and assign values to them Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 41

42. Terms for string expressions Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 42

43. How JavaScript interprets the plus sign in mixed expressions Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 43

44. Two methods of the window object for converting string values Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 44

45. The same examples with chaining Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 45

46. Terms Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 46

47. The relational operators Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 47

48. The syntax of the global isNaN method Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 48

49. The logical operators in order of precedence Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 49

50. Terms for conditional expressions Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 50

51. The syntax of the if statement Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 51

52. An if statement with else if and else clauses Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 52

53. An if statement with a compound conditional expression Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 53

54. How to test a Boolean variable Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 54

55. The syntax of a while loop Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 55

56. The syntax of a do-while loop Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 56

57. A while loop that gets the average of numbers Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 57

58. The syntax of a for statement Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 58

59. A for loop that calculates future value Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 59

60. Terms for conditional statements Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 60

61. The Calculate MPG application Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 61

62. The Calculate MPG application (continued) Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 62

63. The HTML and JavaScript for the application Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 63

64. The dialog boxes for the Test Scores application Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 64

65. The Test Scores application (continued) Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 65

66. The JavaScript in the HTML head section Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 66

67. The Firefox Error Console with an error Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 67

68. How to display the Firefox Error Console and the source code for an error Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 68

69. Common syntax errors Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 69

70. Extra 2-1: Convert number grades to letter grades Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 70

71. Extra 2-1: (continued) Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 71

72. Extra 2-2: Convert Fahrenheit to Celsius Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 72

73. Extra 2-3:Calculate income tax Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 73

74. Extra 2-3: (continued) Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 74

75. Short 2-1: Enhance the Test Scores application Murach's JavaScript and jQuery, C2© 2012, Mike Murach & Associates, Inc. Slide 75