Confused

Opticknerve

Hy Guys well i am very new to Java script please help me with this..

[color=Blue]Question, var sentence="java script is easy and fun!"[/color]


write the script code to write:
1.1 To return the number of characters contained in the sentence
1.2 To extract a substring from the index "3" to index"10"
1.3 To Convert every character in the sentence to UPPER CASE
1.4 To return the single character that is stored at the index"7" of the sentence
1.5 To return the index position of the character "f" in the sentence.

Your assistance will be highly appreciated