Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 69 - 2625 PortGPt V2.1
P. 69

    Alongside HTML5 and CSS, JavaScript is one of the core languages
                     of the World Wide Web (WWW). It was developed by Brendan                      Tech Fact
                     Eich, a Netscape Communications Corporation programmer, in            There are about 1.7 billion
                     1995. He takes only ten days to develop the language.
                                                                                           websites on the Internet
                                                                                           from which 95% websites
                            FEATURES OF JAVASCRIPT                                              use JavaScript.

                     Some of the important features of JavaScript are as follows:

                         It is used in both client-side and server-side applications.
                         It is platform independent; hence, it runs on many operating systems.

                         It is used with HTML code and run on web browsers.

                         It is a case-sensitive and interpreted language.
                         It is used to validate user input for errors.

                            USING JAVASCRIPT

                     JavaScript cannot run on its own because it is a scripting language, and hence, needs to be embedded
                     within an HTML code.

                     In HTML5, we can use JavaScript in two ways: internally and externally.

                          Internal JavaScript

                     When JavaScript code is written within the HTML web page then it is called internal JavaScript. We
                     use the <SCRIPT> and </SCRIPT> tags to place the JavaScript codes either in the <HEAD> or <BODY>
                     tag of the HTML5 document. The syntax to add internal JavaScript is:
                     <HEAD>
                     <SCRIPT>
                     JavaScript code
                     .....

                     </SCRIPT>
                     <HEAD>
                     OR

                     <BODY>
                     <SCRIPT>
                     JavaScript code
                     .....
                     </SCRIPT>

                     </BODY>

                                                                                              Introduction to JavaScript  67

| 64 65 66 67 68 69 70 71 72 73 74 |