java script

Which of the following is not JavaScript Data Types?

• Undefined

• Number

• Boolean

• Float

Which of the following is correct about features of JavaScript?

• It can not Handling dates and time.

• JavaScript is a object-based scripting language.

• JavaScript is not interpreter based scripting language.

• All of the above

Which of the following is the correct syntax to display "WadJava" in an alert box using JavaScript?

• alert-box("WadJava");

• confirm("WadJava");

• msgbox("WadJava");

• alert("WadJava");

Choose the correct JavaScript syntax to change the content of the following HTML code.

• document.getElement (“WadJava").innerHTML = "I am a WadJava";

• document.getElementById (“WadJava").innerHTML = "I am a WadJava";

• document.getId (“WadJava") = "I am a WadJava";

• document.getElementById (“WadJava").innerHTML = I am a WadJava;

What will be the output of the following Javascript code?

var string1 = "WadJava";

var intvalue = 30;

alert( string1 + intvalue );

• WadJava 30

• 30

• WadJava30

• Exception

Which symbol is used for comments in Javascript?

• \\

• //

• \* *\

• \* */

Javascript string using double quotes is exactly the same as a string using single quotes?

• True

• False

Find output of below code

var a = '20';

var b = a = 30;

document.write(a+b);

• Error in Script

• '20'30

• 2030

• 50

What is divide by 0 in Javascript? var a = 10;

var b = 0;

document.write(a/b);

• Nothing is printed

• 0 is printed

• Infinity is printed

• Some Garbage Value

In JavaScript, Arrays are data type. State True or False

• True

• False