var musicArray=['Crashing Cars','Human','Mr.Brightside','Super Massive Black Hole','Twisted Transistor','Yellow','Seven Nation Army'];

var index=document.getElementById("index");
var fetch=document.getElementById("fetch");



function load(){
    document.getElementById("length").innerHTML=musicArray.length;
}

function chooseSong(){
   for(var x=0;x<musicArray.length;x++){
       if(x==index.value){
            document.getElementById("display").style.color="black";
            document.getElementById("display").style.fontSize="initial";
            document.getElementById("display").innerHTML="song: "+musicArray[x];
       }else if(index.value >= musicArray.length){
            document.getElementById("display").style.color="red";
            document.getElementById("display").style.fontSize="x-large";
            document.getElementById("display").innerHTML="Kindly search for an index between 0 and 6";
       }

}
}
fetch.addEventListener("click",chooseSong);