SOURCE

var rightEye=document.getElementById("righteye");
rightEye.addEventListener("click",moveUpDown);
function moveUpDown(e){
  var robotPart=e.target;
  var top=0;
  var id=setInterval(frame,10)
  
  function frame(){
    robotPart.style.top=top+`%`;
    top++;
    if(top===20){
      clearInterval(id);
    }
    
  }
  
}

var leftEye=document.getElementById("lefteye");
leftEye.addEventListener("click",moveUpDown);
function moveUpDown(e){
  var robotPart=e.target;
  var top=0;
  var id=setInterval(frame,10)
  
  function frame(){
    robotPart.style.top=top+`%`;
    top++;
    if(top===20){
      clearInterval(id);
    }
    
  }
  
}


var leftArm=document.getElementById("leftarm");
leftArm.addEventListener("click",moveRightLeft);

function moveRightLeft(e){
  var robotPart=e.target;
  var left=0;
  var id=setInterval(frame,10)
  function frame(){
    robotPart.style.left=left+`%`;
    left++;
    if(left===70){
      clearInterval(id);
    }
  }
}

<div id="robot">
<div id="head">
    <div class="eye" id="righteye"></div>
    <div class="eye" id="lefteye"></div>
    <div id="nose"></div>
    <div id="mouth"></div>
</div>
<div class="arm" id="rightarm"></div>
<div id="body"><p>I &lt;3 JS!</p></div>
<div class="arm" id="leftarm"></div>
</div>

body {
    font-family: "Comic Sans MS", cursive, sans-serif;
}
p {
    font-size: 2.5em;
}
.eye {
    background-color: blue;
    width: 30%;
    height: 30%;
    border-radius: 50%;
}
.arm {
    background-color: #cacaca;
    position: absolute;
    top: 35%;
    width: 3%;
    height: 40%;
}

#head {
    width:30%;
    height:30%;
    border-radius: 15%;
    background-color: #dadada;
    position: absolute;
    left: 33%;
    top: 5%;
}
#righteye {
    position: absolute;
    left: 10%;
    top: 10%;
}
#lefteye {
    position: absolute;
    left: 60%;
    top: 20%;
}
#nose {
    position: absolute;
    left: 45%;
    top: 50%;
    width: 10%;
    height: 10%;
    background-color: black;
}
#mouth {
    position: absolute;
    width: 65%;
    height: 15%;
    left: 20%;
    top: 70%;
    background-color: red;
}
#body {
    position: absolute;
    left: 25%;
    top: 35%;
    width: 45%;
    height: 55%;
    background-color: #dadada;
    text-align:center;
    padding-top: 30px;
}

#rightarm {
    position:absolute;
    left:21%;
}
#leftarm {
    position: absolute;
    left: 70%;
    width: 27%;
    height: 5%;
}