By Aaron Weiss
Able to make your website rock? Then try out JavaScript. it is the new scripting language everyone's speaking approximately. With JavaScript, you could construct robust applets that upload pizzazz and interactivity on your website. to exploit this new language, you wish the chief of the band, the whole Idiot's advisor to JavaScript, moment version. Its funny method of studying may have you writing JavaScript applets very quickly. you are going to upload multimedia, animation, sound, and extra on your web content. yet that is not all. you are going to additionally get an insider's view of the hot gains of JavaScript 1.1 and the way they combine with numerous net browsers. So upload a few rhythm for your websites with the e-book that does not leave out a beat, the entire Idiot's advisor to JavaScript, moment Edition!Updated to hide the newest model of Netscape Navigator and net Explorer
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Additional info for Complete Idiot's Guide to JavaScript
Sample text
Of course, + can't perform anything on its own—it needs data to work with. Here's where values come in, either in the form of variables or literals. In techno-talk, the values used with an operator are called operands. Thus, consider the following: ❍ 3+8 In the above, 3 and 8 are operands, and the + is the operator. " JavaScript offers a wide array of arithmetic operators, which you can use with your values, whether they are literals or variables (or variables in the form of properties of objects).
Let's Make a Function! 2001 00:37:38] Complete Idiot's Guide to JavaScript Now you're ready to define a real JavaScript function. No more talk about lunch. You will build on an example that was already coded in the previous chapter. In Chapter 7, you wrote a small segment of JavaScript code that calculated the daily gross profit on product purchases via a Web page. The special exception was that every 10th purchase was free, so for every 10th purchase, a zero was added to your cumulative total.
A couple of notable unary operators exist. These only call for one operand, which will be a variable. There are three unary operators in JavaScript to know: increment, decrement, and negation. Here's an example of each. Unary Increment ++ This operator will increase by one the value of the operand (variable) supplied to it. Thus, mugs++ will increase the value of the current value of mugs by 1. You might (as further detailed later in this chapter) use this in an assignment: ❍ sales = mugs++; Note the position of the ++ relative to mugs.