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Q:

What are windows object and navigator object in JavaScript?

Answer

Windows object is top level object in Java script. It contains several other objects such as, document, history, location, name, menu bar etc., in itself. Window object is the global object for Java script that is written at client-side.


Information pertaining to the client browser and system is returned by the navigator object of JavaScript. Navigator object is the top level object for all users.

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Q:

What is decodeURI(), encodeURI() in JavaScript?

Answer

To send the characters that can not be specified in a URL should be converted into their equivalent hex encoding. To perform this task the methods encodeURI() and decodeURI() are used.


For example, the following code snippet performs the encoding of URL:


<script type="text/javascript">


          var uri = https://www.mysite.com/city?=Banglore; // original URI


          var ncodeuri=encodeURI(uri);


          document.write("<br />ncodeuri”);


          var dcodeuri = decodeURI(ncodeuri); 


          document.write(“<br>/>dcodeuri”);


</script>

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Q:

How to set the cursor to wait in JavaScript?

Answer

The cursor can set to wait in JavaScript by using the property ‘cursor’ property. The following example illustrates the usage.


window.document.body.style.cursor = "wait"; 

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Q:

How to Accessing Elements using javascript?

Answer

The elements of JavaScript are accessed by their names. By default the browser is accessed by the element ‘windows’ and the page by ‘document’. The corresponding element has user defined names for forms and its elements. For example


var pwd = windows.document.frmLogin.password.value;


assigns the value of the password field of the form fromLogin in the current document, where password is the name of the element and frmLogin is the name of the form. Like wise any form element is accessed.

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Q:

Where are cookies actually stored on the hard disk?

Answer

The storage of cookies on the hard disk depends on OS and the browser. The Netscape navigator on Windows, the file cookies.txt contains all the cookies. The path is :


c:\Program Files\Netscape\Users\username\cookies.txt


 


The Internet Explorer stores the cookies on a file by name username@website.txt is


c:\Windows\Cookies\username@Website.txt

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Q:

What is the difference between Client side JavaScript and Server side JavaScript.

Answer

Client side java script comprises the basic language and predefined objects which are relevant to running java script in a browser. The client side java script is embedded directly by in the HTML pages. This script is interpreted by the browser at run time.


Server side java script also resembles like client side java script. It has relevant java script which is to run in a server. The server side java scripts are deployed only after compilation.

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Q:

What are the advantages of the external over inline style methods?

Answer

- External Style Sheets are useful as it keeps the style and content separately and doesn’t allow it to mix with each other. It can control the styles for multiple documents, whereas inline style mixes the content with the style and make the code messier.


- External style sheet allows the creation of various classes in a structured way, whereas inline style sheet can’t create or control class elements.


- External style sheet can use selector and grouping methods to apply styles, whereas inline styles can’t use selector and grouping methods.

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Q:

What is the use of Media Types in CSS?

Answer

Media types in CSS define the media like audio and video to be used in your HTML document to represent the properties in a better way. The font property can be used for media types as it can be used for print media or screen media. Document requires a defined media to represent the screen that can be read on the paper. It is used as:@media 


<html>


<head>


<style>


@media screen


{


p.test {font-family:verdana,sans-serif;font-size:14px;}


}


@media print


{


p.test {font-family:times,serif;font-size:10px;}


}


</style>


</head>


<body>


----------Your code here----------


</body>


</html>

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