What are the top 5 important things a beginner must know about JavaScript?

1. What are the top 5 important things a beginner must know about JavaScript? www.mindfiresolutions.com z

2. When websites started springing up over the World Wide Web, on came a host of web technologies along with it. The journey started with the very basic HTML and cascade style sheets, which would help develop basic webpages. Although these web pages would be suave and glossy in their appeal, they were literally dead in terms of user interactions. As more and more users started logging in online and user interactions started getting complex, there was the need for smarter technologies. JavaScript was hence born as a structure devoid scripting platform. It is in fact the lack of this structure, which makes JavaScript easy to grasp by even the most naïve developers. Here are some of the to do for the rookie JavaScript professionals. www.mindfiresolutions.com z

3. Customization at all levels By the very innate design of it, JavaScript is meant to have just the very least data types. The standard data types are string, number and Boolean, and that is where the realm of limitations ends. One can add what is called as a ‘property’ or attribute to almost every artefact and object. As an example, consider declaring a variable and then attaching a property to it. Var a() A.b=”yes” What effectively has been done here is that a newly created object “a” has been assigned a property “b”, and this can even manipulate individual characters within a value set. www.mindfiresolutions.com z

4. Performing operations using variables www.mindfiresolutions.com z Once variables have been declared and their properties assigned, assignment of value to these can be taken up. JavaScript provides for four major classes of operators to support this: A. Arithmetic: perform your mathematical functions such as addition, multiplication, division, subtraction on constants and declared variables. B. Comparison: these can be used for comparing variable values to each other , or to constants, working predominantly on the primitive numeric type. C. Logical and conditional: Get your hands dirty at using all these operators to master javascripting.

5. www.mindfiresolutions.com z Document object model While JavaScript works its magic amidst tags, it is the HTML document which is the framework. JavaScript gives JavaScript developers a chance to modify and play with this very object- document. The document object model can be used to write custom scripts to update and change the object, and can be a handy trick up the sleeve.

6. www.mindfiresolutions.com Graphics and Animation z As moving graphics and animation are commonly used on websites, JavaScript supports including graphics in many ways. To start with, the libraries have functions such as setinterval() and settimeout() ,to manipulate graphical displays. These functions can in turn be combined with appropriate properties of the DOM objects above for the desired effects. In Addition to this, there is the added support of automating this process for the programmers.

7. www.mindfiresolutions.com z Forms This is a very important premise of effective user interactions supported by JavaScript. A Forms class is available with objects such as textbox, listbox, radio buttons, checkbox, etc., which can be used to capture user input. A good JavaScript programming expert should also know how to perform specific tasks based upon selections from these objects. Various event handling functions such as OnClick() are available for the same.

8. www.mindfiresolutions.com z Content Designed By: Mindfire Solutions