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Friday 7 July 2017

Lesson No. 1 Web Publishing - Cross Browser Testing

Chapter No. 1 Web Publishing

Cross Browser Testing

Introduction
With wide range of web browsers available, end users using different web browsers to access your web site/applications, it has now become crucial to test web site/applications on multiple browsers. On different browsers, client components like HTML, JavaScript, AJAX requests, Applets, Flash, etc. may behave differently.

Testing your website on different browsers is knows as Cross Browser Testing.
Cross Browser Testing is a process to test web applications across multiple browsers.
It involves checking compatibility of your application across multiple web browsers and ensures that your web application works correctly across different web browsers.
It involves testing both the client side and server side behavior of your Web application when it is accessed using different Web Browsers.
It shows limitation of the web site and functional features.
Some Popular Browsers:

In every browser and platform the website will look and work differently.
Every web browser comes with variations and differences in the way a web page is displayed and works.

Examples:

1.  <bgsound> tag is only supported by Internet Explorer and not by Netscape Navigator, Chrome, Firefox, Opera, etc..
2.  Broken image - an image in a web page whose path is not found or path is wrong or file name is given is wrong. Internet Explorer shows broken images with a red color sign along with alternative text. In Netscape Navigator, it shows 3 color dots with alternative text.
3. <hr> tag Horizontal rule - The appearance is different in browsers. In Internet Explorer it shows 3D effect, whereas in Netscape Navigator it show rule (line)  in regular manner.
4. bordercolorlight and bordercolordark - attributes of <table> tag are supported in Internet Explorer but not supported in Netscape Navigator.
5. bgproperties=fixed - This attribute used in <body> tag makes background image water marked in Internet Explorer, but moves with text in Netscape Navigator.
6. Outset Border - Outset border style given to paragraph tag is shown in Internet Explorer and not in Netscape navigator.
7. <blink> tag is not supported in Internet Explorer and other browsers which blinks the text, but supported in Netscape Navigator.

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