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An introduction
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An introduction
http://www.geekpedia.com/prog_ttrls.php?id=4
It all started with Java. Java, developed by Sun Microsystems was intended to be used only in consumer electronics, but now it?s used as an advanced programming language for the Internet. First browser to implement Java was HotJava, developed by Sun Microsystems for testing purposes. Netscape integrated it in its browser, Navigator, and after this Java gained interest.
However, Netscape decided to implement some other language in its browser, a simple one, a scripting language. LiveScript was the first scripting language for the web. The syntax of LiveScript is based on Java, and it?s an interpreted language, not a compiled one like Java. Sun agreed with this language, and both companies decided to call it JavaScript.
Webpages visually enhanced, functionality increased, CGI scripts used more rarely, and all that with a programming language that is a lot easier to learn and makes programming simple things a lot easier. JavaScript > Tips and Tutorials > Introduction to JavaScript Oct 12, 2006
However, Netscape decided to implement some other language in its browser, a simple one, a scripting language. LiveScript was the first scripting language for the web. The syntax of LiveScript is based on Java, and it?s an interpreted language, not a compiled one like Java. Sun agreed with this language, and both companies decided to call it JavaScript.
Webpages visually enhanced, functionality increased, CGI scripts used more rarely, and all that with a programming language that is a lot easier to learn and makes programming simple things a lot easier. JavaScript > Tips and Tutorials > Introduction to JavaScript Oct 12, 2006
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We can?t tell the browser that a JavaScript is starting using some JavaScript code, because he doesn?t know, how to interpret it. We should tell the browser that a JavaScript code is starting that it says that another JavaScript is starting. That?s a paradox. Therefore, we must tell him using some usual code that all browsers can understand. That is HTML. We will use a HTML tag to tell the browser that JavaScript code is starting, and to send it to the JavaScript compiler implemented in the browser:
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2. Loops
You will not believe how important loops are in programming. Loops help a program decide what to do. From the simplest thing that may sound like ?While the visitor visits the website between 7AM and 10AM say ?Good morning?? to ?If browser is Internet Explorer use x function, if browser is Firefox use y function?.
Now, an example more suitable for JavaScript will be choosing between two different types of scripts, one for Internet Explorer browser and one for Netscape, because of some incompatibility between the two.
No matter where, loops are frequently used in programming. There are several types of loops and you will learn them all by reading the below lessons.
Now, an example more suitable for JavaScript will be choosing between two different types of scripts, one for Internet Explorer browser and one for Netscape, because of some incompatibility between the two.
No matter where, loops are frequently used in programming. There are several types of loops and you will learn them all by reading the below lessons.
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The following sample of code gives an idea of how to add a blinking flash message at the status bar. Adding flash text at the status is very simple for that we use a single if-else loop in function blinkflash(). This script is compatible with IE. Click here to see live example.
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4. operators
You?ll get familiar with operators really soon, that?s because you already know the basics of them. Yes, you do. You learned about them in your first years of elementary school. Addition, subtraction, multiplication, division? this is what operators are all about.
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JavaScript supports two loop statements: for and while. The For statements are best used when you want to perform a loop a specific number of times. The While statements are best used to perform a loop an undetermined number of times. In addition, you can use the break and continue statements within loop statements.
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