1. Which tag is used to write the javascript code

script
sp
javascript
java

2. Which is not valid data type in Javascript

Undefinded
Boolean
float
Number

3. Which of the following type of variable is visible everywhere in your JavaScript code?

global variable
local variable
Both of the above
None of the above.

4. Which of the following function of Array object reverses the order of the elements of an array?

push()
reduce()
reverse()
reduceRight()

5. Which of the following function of String object extracts a section of a string and returns a new string?

slice()
split()
replace()
search()

6. Which of the following function of String object combines the text of two strings and returns a new string?

add()
merge()
concat()
append().