Error in Javascript

help me, i have an error in this line of code and i cannot understand it
var bulletScript : clone.gameObject.AddComponent(“BulletScript”);

the error was
‘;’ expected.Insert a semicolon at the end

Remove the ‘:’ from

var bulletScript : clone.gameObject.AddComponent("BulletScript");

And do a:

var bulletScript = clone.gameObject.AddComponent("BulletScript");

That is, assuming you’re trying to add the component and get a reference to it at the same time. See AddComponent.
Btw, there’s no need to do this.gameObject. gameObject already refers to the game object that your script is attached to. So just:

bulletScript.playerShooting = gameObject;

Did you mean:

var bulletScript = clone.gameObject.AddComponent("BulletScript");

( “=” not “:” )?