JumpSpriteManager error

I am new in JavaScrip sow I don’t know what is the mistake in this…

public var jumpSprite : JumpSpriteManager;

It sais that "the name
“JumpSpriteManager” does not denote to
a valid tipe (“not found”). (BCE0018)

What can I do??

If you don’t understand what the problem is here, I’d suggest doing some scripting tutorials first than trying to ask super beginner questions here on Unity Answers.

A good site to learn scripting is www.unity3dstudent.com which has step by step videos.
Once you’ve learned the basics and have problems with your scripts come back and we’ll be happy to help.