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Loops

Loops give the JavaScript code you are writing the ability to make decisions (with the Conditional part of the statement) or perform a single task as many times as you have a need for. These Conditional and Looping statements were borrowed from older, more polished languages like C, C++, and Java. Porting over the functionality of these very capable languages gives JavaScript a very polished set of very useful and functionally correct tools which you, the developer, can work with.

Basically, a loop is just that - an action that occurs again and again until a certain condition, set by you, is met, thus satisfying the condition of the loop and stopping the looped action. Used with the many operators available to JavaScript, there is no limit on what your looped expressions can do. There are four different loop structures and three different statements that will be discussed in this document. They are as follows.

  • The for Loop
  • The while Loop
  • The do / while Loop
  • The for / in Loop
  • The break Statement
  • The continue Statement
  • The with Statement

The break, continue, and with statements are used within the loop statements to provide a very specific functionality that would either be non-existent or be very tedious. The statement is there to help you, the developer, in writing more efficient code with a smaller amount of typing. They are fairly simply to use and are very straightforward. There's no big tricks or hidden functionality, just well designed and fully functional commands.

Variables
JavaScript Introduction
The JavaScript Array

The JavaScript Chronicles

JavaScript Introduction
Part 2: Data Types
Part 3: Arrays
Part 4: Operators
Part 5: Conditional Statements
Part 6: JavaScript Functions
Part 7: Pattern Matching - The RegExp Object
Part 8: Introduction to Server Side JavaScript
Part 9: Server Side JavaScript Mail Sending
Part 10: Server Side JavaScript and File Manipulation
Part 11: Working with Forms in JavaScript Part 12: Getting to Know Dynamic HTML


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