object movement as wave in Unity 3d - unity3d

Question

I created a object in unity
GameObject monsterclone =
(GameObject)Instantiate(monsterPrefab, floorPosition, Quaternion.identity);
This object should move in a wave style from a limit1 to limit2.
Then move back from limit2 to limit1.
Y position as well x position have to change in a specific way.
Vector3 nPos = mfloorPos + new Vector3(2f, 0f, 0f);
Vector3 oPos = mfloorPos + new Vector3(-2f, 0f, 0f);
How can I do it?

Answer 1

I can't exactly write the code without knowing more specific but i think this question is already asked any this link will help you out MOVE OBJECT as wave
EDIT:
I think the flat up and float down functionality will work for you for moving one point to another
example:
var floatup;
function Start(){
floatup = false;
}
function Update(){
if(floatup)
floatingup();
else if(!floatup)
floatingdown();
}
function floatingup(){
transform.position.y += 0.3 * Time.deltaTime;
yield WaitForSeconds(1);
floatup = false;
}
function floatingdown(){
transform.position.y -= 0.3 * Time.deltaTime;;
yield WaitForSeconds(1);
floatup = true;
}
example taken from

Answer 2

float amplitudeX = -25.0f;
float amplitudeY = 5.0f;
float omegaX = 0.5f;
float omegaY = 4.0f;
float index;
void Update () {
index += Time.deltaTime;
float x = amplitudeX*Mathf.Cos (omegaX*index);
float y = Mathf.Abs (amplitudeY*Mathf.Sin (omegaY*index));
if(transform.position.x > 24){
transform.eulerAngles = new Vector3(270, -90, 0);
}
if(transform.position.x < -24){
transform.eulerAngles = new Vector3(270, 90, 0);
}
transform.localPosition= new Vector3(x,y,20);
}

Answer 3

If this is a consitant wave and not dependant on speed I would use an animation to create a literal wave curve of the Position.Y value (much in the same principle as Ravindra Shekhawat has explained.) you can find out more about animation here.
Here is some code (untested) that you could go off. It is in c# so I hope it proves no issue with putting in to JavaScript.
bool monsterMoving = false;
void Update(){
//check monster moving to start updating position
if(monsterMoving == true){
//moving animation controls up and down "wave" movement
animation.CrossFade('moving');
//Lerp changes position
Transform.Lerp(transform.Position, oPos, Time.deltaTime);
if (transform.Position == oPos) {
//We are at destination, stop movement
monsterMoving = false;
}
} else {
// if monster stopped moving, return to idle animation (staying still)
animation.CrossFade('idle');
}
}
// function to send a new position to the monster object
void MoveTo(Vector3 newPos){
oPos = newPos;
monsterMoving = true;
}