JavaScript Loops | JavaScript Loops Examples | JavaScript Tutorial For Beginners | Simplilearn

2. What’s in it for you? • For loop • While loop • Breaking out of a loop • Skipping a loop cycle

3. What is a loop? A loop is a programming construct that executes a piece of code as long as a certain condition is met Loops Exit controlled Entry controlled

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5. For loop

6. For loop start Increase n by 1 for n= 0 to 9 Print “Looping” 0<n<10 n>10 end

7. For loop Counter variable – Keeps track of how many times the code has been executed Counter variable increment Usually +1 for(i=0; i<5; i++) Condition code – Keeps looping until the condition is met

8. While loop

9. While loop start while(condition) Execute code true false end

10. While loop The variable is the value that will change while (variable < endingCondition) Maximum value a variable can reach

11. Do - while loop start Execute code while(condition) true false end

12. Breaking out of a loop

13. Breaking out of loop Break is used to break out of a loop for(i=1;i<=10;i++) { document.write ( i + “is the current number) if( i==5 ){ break; } }

14. Skipping a loop cycle

15. Skipping a loop cycle To skip a particular loop, continue is used for(i=1;i<=10;i++) { if( i==3 ){ continue; } document.write ( i + “is the current number) }