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This chapter is from the book


Another useful feature of JavaScript—and most other programming languages—is the ability to create loops, or groups of statements that repeat a certain number of times. For example, these statements display the same alert 10 times, greatly annoying the user:

for (i=1;i<=10;i++) {
  Alert("Yes, it's yet another alert!");

The for statement is one of several statements JavaScript uses for loops. This is the sort of thing computers are supposed to be good at: performing repetitive tasks. You will use loops in many of your scripts, in much more useful ways than this example.


Loops are covered in detail in Hour 7, "Repeating Yourself: Using Loops."

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