This document discusses JavaScript control statements including for loops, switch statements, do-while loops, break and continue statements, and logical operators. It covers the basic syntax and flow of each statement type with examples. Key topics are counter-controlled repetition with for loops, using break and continue to control loop execution, and applying logical operators like AND, OR, and NOT in conditional statements.

1. Kelompok 8 Java Script : Control Statement II Oleh: Kukuh I. 5108100122 Brian M. 5108100156 Yodiar Hellian 5108100165

2. Chapter 8 - JavaScript: Control Statements II 1. Introduction 2. Essentials of Counter-Controlled Repetition 3. For Repetition Statement 4. Examples Using the for Statement 5. Switch Multiple-Selection Statement 6. Do … while Repetition Statement 7. Break and continue Statements 8. Labeled break and continue Statements 9. Logical Operators

3. 1. Introduction Continuation of Chapter 8 Theory and principles of structured programming

4. 2. Essentials of Counter-Controlled Repetition Counter-controlled repetition Name of a control Initial value Increment or decrement Final value

5. While Counter.html

6. 3. for Repetition Statement for repetition statement Handles all the details of counter-controlled repetition for structure header The first line

7. 3. for Repetition Statement for ( var counter=1 ; counter<=7 ; ++counter ) Initial value of control variable Increment control variable Control variable name Final value of control variable for which the condition is true for keyword Loop-continuation condition

8. 3. for Repetition Statement counter <= 7 document.writeln( &quot;<p style=\&quot;font-size: &quot; + counter + &quot;ex\&quot;>XHTML font size &quot; + counter + &quot;ex</p>&quot; ); true false var counter = 1 ++counter Establish initial value of control variable. Determine if final value of control variable has been reached. Body of loop (this may be many statements) Increment the control variable. Fig. 9.4 for repetition structure flowchart.

9. For Counter.html

10. 4. Examples Using the for Statement Summation with for Compound interest calculation with for loop Math object Method pow Method round

11. Sum.html

12. Interest.html

13. 5. switch Multiple-Selection Statement Controlling expression Case labels Default case

14. SwitchTest.html

15. 5. switch Multiple-Selection Statement case a case a action(s) true false . . . break case b action(s) break false false case z case z action(s) break default action(s) true true case b

16. 6. do … while Repetition Statement Similar to the while statement Tests the loop continuation condition after the loop body executes Loop body always executes at least once

17. 6. do…while Repetition Structure condition true action(s) false Fig. 9.10 do … while repetition statement flowchart.

18. DoWhile.html

19. 7. break and continue Statements break Immediate exit from the structure Used to escape early from a loop Skip the remainder of a switch statement continue Skips the remaining statements in the body of the structure Proceeds with the next iteration of the loop

20. BreakTest.html

21. ContinueTest.html

22. 8. Labeled break and continue Statements Labeled break statement Break out of a nested set of structures Immediate exit from that structure and enclosing repetition structures Execution resumes with first statement after enclosing labeled statement Labeled continue statement Skips the remaining statements in structure’s body and enclosing repetition structures Proceeds with next iteration of enclosing labeled repetition structure Loop-continuation test evaluates immediately after the continue statement executes

23. BreakLabelTest.html

24. ContinueLabelTest.html

25. 9. Logical Operators More logical operators Logical AND ( && ) Logical OR ( || ) Logical NOT ( ! )

26. 9 Logical Operators

27. 9. Logical Operators

28. LogicalOperators.html