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JavaScript Beginners Corner:
JavaScript Unary Operators
Posted 16 years ago on 11/6/2008 and updated 1/2/2009
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General Info: Unary Operator

An operation with only one operand (a single input). Common unary operators include + plus, - minus, and bitwise not. Some operators can function as both unary and binary operators. For example, + and - operators can serve as either.

Languages Focus: Unary Operators

What unary operators are supported in additoin to the standard plus, minus, and bitwise not.

JavaScript Unary Operators

An operation with only one operand (a single input). JavaScript unary operators include ++ and --. They can be used either before or after a variable as in: a++, b--, and ++a, and --b.


Syntax Example:
var iCounter=0;
for (iCounter=0;iCounter<=5;iCounter++)
document.write("Count is " + iCounter + "<br>");

Working Example

<script language=JavaScript>
var iCounter=0;
for (iCounter=0;iCounter<=5;iCounter++)
document.write("Count is " + iCounter + "<br>");

More Info

Definition:  Unary Operator


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Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

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