JavaScript is a scripting language designed primarily for adding interactivity to Web pages and creating Web applications. Nex-G Skills provide javascript training according to the current requirement of IT industry. The language was first implemented by Netscape Communications Corp in Netscape Navigator 2 beta (1995). JavaScript is different from the Java language (developed in the 1990s at Sun Microsystems). However, the two languages can interoperate well. Client-side JavaScript programs, or scripts, can be embedded directly in HTML source of Web pages. Depending on the Web developer's intent, script code may run when the user opens the Web page, clicks or drags some page element with the mouse, types something on the keyboard, submits a form, or leaves the page. JavaScript is scripting language used to make web pages interactive & spontaneous. JavaScript is widely supported for all the major web browsers, including Internet Explorer, Firefox, Google Chrome, Safari etc. JavaScript developed by Netscape in 1995 as a method for validating forms and providing interactive content to web site. Microsoft and Netscape introduced JavaScript support in their browsers. JavaScript led the Web 2.0 revolution with AJAX. Using JavaScript, sites can send HTTP requests behind the scenes and customize or update certain sections of the site, tailored to a particular user’s needs. This does away with complete page refreshes and makes the user interface a lot more powerful and user friendly.

Who Should Do ?

B.Tech, M.Tech, Technical Managers, Consultants, Communications Professionals, Software engineers, System Engineers, Network Professionals, Marketing and Sales professional, IT professionals.

    Introducing JavaScript

  • Evolution of JavaScript since 1996
  • Current uses of JavaScript in web applications

  • JavaScript in web applications

  • Placing JavaScript code in separate .js files
  • Using unobtrusive JavaScript principles to separate event handlers from HTML

  • JavaScript language fundamentals

  • Statements
  • Variables and data types
  • Operators (for both numbers and strings)
  • Conditionals (if-else if-else and switch-case)
  • Loops (while, do-while, for)
  • Functions a) Creating functions b) Calling functions c) Returning values

  • Understanding JavaScript objects

  • The role of objects in JavaScript programming
  • Working with methods and properties
  • The JavaScript object hierarchy
  • The implicit window object
  • Event handlers

  • JavaScript with forms

  • How forms fit into the JavaScript DOM
  • Setting focus on a specific field
  • Blocking a field from being edited
  • Setting field values based on user input
  • Basic validation: requiring field values to be filled in
  • Handling calculations within forms (useful for totaling orders and other quantitative form operations)
    a) Includes a discussion of the Math object, which provides useful methods for making calculations

  • JavaScript with links and images

  • Using onMouseOver and onMouseOut to detect the presence of the mouse
  • Using onClick to process clicks on hyperlinks
  • Having hyperlinks call functions via javascript: URLs
  • Conditionally navigating the user to a page when they click a link
  • Dynamically swapping one or more images on a page based on the position of the mouse

  • JavaScript for navigation

  • Overview of the history and location objects
  • Building a jump menu (a pulldown menu that takes the user to a page based on their selection)
  • Navigating the user to a specific page based on their input in a form

  • JavaScript for pop-up help

  • Pros and cons of having JavaScript open another window
  • Generating and sizing a new (child) window via JavaScript
  • Communication between the child window and the parent window
  • Implementing attractive pop-up help or information windows using JavaScript

  • Advanced form validation with regular expressions

  • Overview of regular expressions as a powerful language for validating form submissions Note: Regular expressions are supported by almost all major programming languages -- learning them in this class will be a boon to students who will later learn other languages
  • Using the RegExp object in JavaScript a)To test whether a string matches a pattern b)To extract pieces of a string (e.g., the month, day, and year from a date the user has entered) c)To clean up illegal characters the user has entered

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"I've been to a different training facilities for other technologies, and this is one of the few where I've left feeling like I've learned more than I expected.
Eduardo Moreno, USA