Javascript : Advantage as Scripting language
Comment now »
Javascript : Advantages as Scripting languages short overview
JavaScript gives HTML designers a programming platform- HTML authors are normally not programmers, but JavaScript is a scripting language with a very simple syntax.
JavaScript can inserted as dynamic text into an HTML page - A JavaScript statement like this: document.write(”<h1>” + name + “</h1>”) can write a variable text into an HTML page.
-JavaScript can respond to Events - A JavaScript can be set to execute when something happens, like when a page has finished loading or when a user clicks on an HTML element.
-JavaScript can read and write HTML elements - A JavaScript can read and change the content of an HTML element.
-JavaScript can be used to validate data - A JavaScript can be used to validate form data before it is submitted to a server. This saves the server from extra processing .
-JavaScript can be used to detect the visitor’s browser - A JavaScript can be used to detect the visitor’s browser, and depending on the browser - load another page specifically designed for that browser .
-JavaScript can be used to create cookies - A JavaScript can be used to store and retrieve information on the visitor’s computer
Javascript : Introduction and Overview
Comment now »
Java script is scripting language designed by Netscape to enable Website gurus to design interactive sites..
JavaScript was originally developed by Brendan Eich of Netscape under the name Mocha, which was later renamed to LiveScript, and finally to JavaScript.
It can enhance the dynamics and interactive features of your page by allowing you to perform calculations, check forms, write interactive games, add special effects, customize graphics selections, create security passwords and more.
You can even use it with CSS to make DHTML (Dynamic HyperText Markup Language). This allows you to make parts of your web pages appear or disappear or move around on the page. JavaScripts only execute on the page(s) that are on your browser window at any set time. When the user stops viewing that page, any scripts that were running on it are immediately stopped.
The only exception is a cookie, which can be used by many pages to pass information between them, even after the pages have been closed.
One of the difference between javascript and Java Programming language is JavaScript is a client side, interpreted, object oriented, high level scripting language, while Java is a client side, compiled, object oriented high level language.
Some of the features related to JavaScript are give below
-JavaScript was designed to add interactivity to HTML pages.
-JavaScript is a scripting language .
-A scripting language is a lightweight programming language.
-JavaScript is usually embedded directly into HTML pages.
-JavaScript is an interpreted language (means that scripts execute without preliminary compilation)
Everyone can use JavaScript without purchasing a license
What are HTML Meta tags ?
Comment now »
Html Meta Tag Details
Meta tags allow the most valuable feature that offer the web site owner that is the ability to control to some degree how their web pages are described by some search engines. They also offer the ability to prevent pages from being indexed at all.
They are information inserted into the “head” area of your web pages. Other than the title tag (explained below), information in the head area of your web pages is not seen by those viewing your pages in browsers. Meta tags, for example, can tell a browser what “character set” to use or whether a web page has self-rated itself in terms of adult content.
Meta tags are html tags that are included in the <head> tag along with the <title> tag. A meta tag is formatted in the following way,
<meta type=”name” content=”value”>
example of Meta tag
Meta elements can be used to specify page description, keywords and any other metadata not provided through the other head elements and attributes.
The meta element has four valid attributes: content, http-equiv, name and scheme. Of these, only content is a required attribute.
For example
<meta name=”description” content=”Free free script installation tutorails on HTML, CSS, XML, and XHTML” />
This meta element defines keywords for your page:
<meta name=”keywords” content=”HTML, DHTML, CSS, XML, XHTML, JavaScript” />