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Q:

How do you put a message in the browser's status bar ?

A) status("put your message here") B) window.status = "put your message here"
C) statusbar = "put your message here" D) window.status("put your message here")
 
Answer & Explanation Answer: B) window.status = "put your message here"

Explanation:
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Q:

What is the correct JavaScript syntax to write “Hello World”?

A) System.out.println( B) println (
C) document.write( D) response.write(
 
Answer & Explanation Answer: C) document.write(

Explanation:

document.write() is a JavaScript command that literally writes out whatever you place between the opening and closing parentheses.

 

 

What_is_the_correct_JavaScript_syntax_to_write_“Hello_World”1556279922.jpg image 

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Q:

What are the different objects used in JavaScripts?

Answer

JavaScripts uses a hierarchical structure that applies to the objects in a document. There are some objects that show the relationship of one object to another using the language.

Window object: This is the topmost object in the hierarchy. It represent the content area of browser window that consists of HTML documents. Each frame is also a window that has some actions inside it.

 Document object: This object gets loaded in a window and consists of objects of different kind in the model. It consists of the content that will be written in the script.

 Form object: Form objects are used for more interaction with the users. It represents the form elements inside <FORM>...</FORM> tag.

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Q:

What is Javascript namespacing? How and where is it used?

Answer

Using global variables in Javascript is evil and a bad practice. That being said, namespacing is used to bundle up all your functionality using a unique name. In JavaScript, a namespace is really just an object that you’ve attached all further methods, properties and objects. It promotes modularity and code reuse in the application.

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Q:

Are javascript and jQuery different?

Answer

jQuery is a quick as well as concise JavaScript Library that simplifies HTML document traversing, animating, event handling, & Ajax interactions for the purpose of quick web development needs. So although they are not entirely different, both are not the same either!

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Q:

How do you create a new object in JavaScript?

Answer

var obj = new Object(); or var obj = {};

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Q:

How to determine the state of a checkbox using Javascript?

Answer

var checkedP = window.document.getElementById("myCheckBox").checked;

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Q:

How to get the contents of an input box using Javascript?

Answer

Use the "value" property.
var myValue = window.document.getElementById("MyTextBox").value;

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Subject: Web Technology