1 00:00:00,510 --> 00:00:01,820 Hello and welcome. 2 00:00:01,860 --> 00:00:06,480 In this video I will introduce you to JavaScript. 3 00:00:06,480 --> 00:00:17,070 JavaScript is one of the three languages that a web developer must learn what is javascript. 4 00:00:17,070 --> 00:00:26,090 JavaScript is a programming language that adds interactivity to your website. 5 00:00:26,160 --> 00:00:36,840 The interactivity can be when a button is pressed or when data is entered in to a form. 6 00:00:36,840 --> 00:00:45,630 It can even be animations so when you go to a Web site any time you notice some interaction or where 7 00:00:45,630 --> 00:00:54,090 you have to press a button may be complete a form those interactions are made possible by javascript 8 00:00:54,810 --> 00:01:00,900 when javascript is applied to and hasty AML document. 9 00:01:00,900 --> 00:01:11,570 It makes the document dynamic and eat as interactivity to the Web site. 10 00:01:11,700 --> 00:01:17,390 Javascript was invented by Brandon H. 11 00:01:17,600 --> 00:01:28,200 Who is the co-founder of the Mozilla Corporation which also is responsible for the Firefox web browser. 12 00:01:28,200 --> 00:01:31,420 JavaScript is not Java. 13 00:01:31,530 --> 00:01:35,580 There is a completely separate language programming language called Java. 14 00:01:35,970 --> 00:01:42,350 So they are both different in design and other aspects as well. 15 00:01:42,390 --> 00:01:51,300 JavaScript is one of the three language or web developers must learn the other two languages are hasty 16 00:01:51,300 --> 00:01:54,780 AML and CSX. 17 00:01:54,780 --> 00:02:04,500 Another key distinct feature of javascript is that JavaScript is case sensitive so if you declare something 18 00:02:04,500 --> 00:02:11,790 with a lower case and later on tried to access that with an uppercase it will not work because they 19 00:02:11,790 --> 00:02:13,110 are two separate things. 20 00:02:13,110 --> 00:02:20,870 It treats cases separately so uppercase and lower and lower case are two different things in javascript. 21 00:02:20,880 --> 00:02:28,640 So when you write in JavaScript code you need to be careful which are cases for you using lowercase 22 00:02:29,040 --> 00:02:36,290 to define something stick to lowercase so that's it for this introduction to JavaScript. 23 00:02:36,300 --> 00:02:37,950 Thank you and bye for now.