Assets/Standard Assets (Mobile)/Example/ExampleScript.js/(13,104): BCE0044: expecting :, found ';'.

I am learning javascript currently and I simply don't understand this error. I have learned a great deal of javascript and Unity editing, but I have much to learn. Can you help me?

Assets/Standard Assets (Mobile)/zScripts/SummonEscape.js(13,104): BCE0044: expecting :, found ';'.

function Update()

{

if(Input.GetKeyDown("e"))

{

spawnBullet(grenade);

}

}

var grenade;

spawnBullet();

{

Instantiate(grenade, GameObject.Find("SummonEscape_Spawn").transform.position, Quaternion.identity);

grenade.rigidbody.AddForce(transform.forward*100);

yield WaitForSeconds(3);

Destroy(grenade);

}

I don't understand the error "Assets/Standard Assets (Mobile)/Example/ExampleScript.js/(13,104): BCE0044: expecting :, found ';'."

What do I need to do in order to fix it? I heard that I need to place || whenever I use an "If" function however there is only one If within my script and there is only one part to it. Do I need to place || even when I one have one topic within the "if" parenthesis?

Thanks for the help.