Write a short note on Web Browsers - MBA Assignment Notes
Answer:A web browser is a software program that enables you to view and interact with any information available on the Web.
Web comprises of a number of text files generally written in HTML language that are linked to each other is a specific manner and these text files are called HTML Web pages. These web pages can be viewed with the help of a software program known as web browsers. Web browsers acts as a user interface for users to navigate in the web pages, read content and perform actions such as click buttons, click on hyperlinks to another web page, select text, enter URL (uniform resource locator) of a web page to access etc.
Functions of a web browser:
Web browser has two main functions namely:
· To make a request for a page. This is done by typing in the URL of the web page concerned in the address bar of the web browser. Similarly, when a hyperlink is clicked the URL of the hyperlink gets automatically populated in the address bar of the browser.
· To interpret the HTML page sent to the user from the web server. The formatting is done on the browser and displayed to the user in a readable form. The actual page on the web server is in ASCII form. HTML along with Cascading Style Sheets (CSS) are used to present the web pages in web browser.
Examples of web browsers:
Microsoft Internet Explorer, Mozilla Firefox, Google Chrome are popular web browsers.
· User interface: It consists of an address bar where you can enter the URL, bookmark menu to save the links of your favourite Web pages, back/forward button to navigate to the previous Web page/next Web page, and so on.
· Browser engine: It is the interface through which you can ask questions to the browser and manipulate the rendering engine. It also sets the layout of a Web page formatted with HTML tags within a browser.
· Rendering engine: It is displays the content you had requested, after obtaining it from the respective Web server.
· Networking: It is used for calling the network for example, raising an HTTP request for a URL connection through the server.
· Display backend: It provides drawing tools, user interface widgets, and fonts that help to display text and graphics.
· JavaScript interpreter: It is used to parse and execute the codes of written using the Java script.
· Data storage: This enables the browser to save all the data on the hard disk and acts as the database of the browser.
· To interpret the HTML page sent to the user from the web server. The formatting is done on the browser and displayed to the user in a readable form. The actual page on the web server is in ASCII form. HTML along with Cascading Style Sheets (CSS) are used to present the web pages in web browser.
Examples of web browsers:
Microsoft Internet Explorer, Mozilla Firefox, Google Chrome are popular web browsers.
Main components of a web browser:
Figure: components of web browser |
| source: coolnerds.com |
· User interface: It consists of an address bar where you can enter the URL, bookmark menu to save the links of your favourite Web pages, back/forward button to navigate to the previous Web page/next Web page, and so on.
· Browser engine: It is the interface through which you can ask questions to the browser and manipulate the rendering engine. It also sets the layout of a Web page formatted with HTML tags within a browser.
· Rendering engine: It is displays the content you had requested, after obtaining it from the respective Web server.
· Networking: It is used for calling the network for example, raising an HTTP request for a URL connection through the server.
· Display backend: It provides drawing tools, user interface widgets, and fonts that help to display text and graphics.
· JavaScript interpreter: It is used to parse and execute the codes of written using the Java script.
· Data storage: This enables the browser to save all the data on the hard disk and acts as the database of the browser.
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