Help with attacking, and death animation. Unity 5 javascript

Ok, I am trying to add a death animation, and an attack on hit animation; and I cannot seem to make anything work. There exist no errors, but when I click play the game goes from idle to being hit animation without me left clicking and just loops it over again.

Here is what shows for errors as I play.

MissingComponentException: There is no ‘Animation’ attached to the “slime” game object, but a script is trying to access it.
You probably need to add a Animation to the game object “slime”. Or your script needs to check if the component is attached before using it.
UnityEngine.Animation.Play (System.String animation) (at C:/buildslave/unity/build/artifacts/generated/common/modules/Animations.gen.cs:601)
Enemy.OnMouseDown () (at Assets/Enemy.js:36)
Enemy.Update () (at Assets/Enemy.js:14)

‘slime’ AnimationEvent has no function name specified!

Here is my code!

#pragma strict

var health : int = 100;
var tapdmg : int = 10;
 

function Start () {

}

function Update () {
	if(Input.GetMouseButton(0))
		Debug.Log("Pressed Left Click.");
		OnMouseDown();
	if(health <= 0)
	{
		Dead();
	}	
}

function ApplyDamage (tapdmg : int)
{
	health -= tapdmg;
	
}
 function Dead()
 {
	GetComponent.<Animation>().Play ("slimedeath"); 
 	
 

 }
function OnMouseDown ()
{
	ApplyDamage(10);
	GetComponent.<Animation>().Play ("hit"); 

}

Use OnMouseDown function when you have a collider on a gameObject then want to click on it
as you can see on docs

then better to named as Clicked() because it already do something else.

try to use Animator instead Animation component in your project that you can see the bugs visually. its new and easy!

anyway you can fix your script with some change:

var playerAnimation  =  GetComponent.<Animation>();
var isDead:boolean = false; // to play dead animation once

function Update () 
     if(health <= 0 && !isDead)
     {
         Dead();
         isDead = true;
     } else if(Input.GetMouseButtonDown(0)) { // use down to play hit animation once
            ApplyDamage(10);
            playerAnimation.CrossFade ("hit"); // use crossfade to transition between animation clips
     }
 }

also can use playerAnimation.Stop(); if you want to sure the previous clip is stopped