java.js

function addNum(val){
    quest.innerText +=  val;
    disp.innerText= val;

}
function solve(){
ans.innerText= eval(quest.innerText); 
disp.innerText= "="; 


}
function del(){
quest.innerText= quest.innerText.slice(0,-1);
ans.innerText= "";
disp.innerText= "del";
}
function clr(){
quest.innerText= "";
ans.innerText= "";
}
function collectAns(){
quest.innerText=ans.innerText ;
ans.innerText="";
disp.innerText= "ans";
}

function root(){

ans.innerText=  Math.sqrt(quest.innerText);
// quest.innerText= "√" + quest.innerText;
disp.innerText= "√";
}
function findPi(){
var pi = quest.innerText;
var mat = Math.PI * pi;
ans.innerText=mat;
//    quest.innerText= "π" + quest.innerText;
disp.innerText= "π";
}
function squareOffTwo(){
ans.innerText=quest.innerText*quest.innerText;
disp.innerHTML= "X<sup>2</sup>";
}
function squareOffAny(){
ans.innerText=Math.pow(quest.innerText,quest.innerText);
disp.innerHTML= "X<sup>x</sup>";
}
function sin(e){

if(e.target.innerText== "SIN"){
 ans.innerText=  Math.sin(quest.innerText*Math.PI/180);
e.target.innerText= "asin";
disp.innerText= e.target.innerText;
}else if(e.target.innerText== "asin") {
 ans.innerText=  Math.asin(quest.innerText*Math.PI/180);
e.target.innerText= "SIN";
disp.innerText= e.target.innerText;
}
}
function cos(e){
if(e.target.innerText== "COS"){
    ans.innerText=  Math.cos(quest.innerText*Math.PI/180);
   e.target.innerText= "acos";
   disp.innerText= e.target.innerText;
  }else if(e.target.innerText== "acos") {
    ans.innerText=  Math.acos(quest.innerText*Math.PI/180);
   e.target.innerText= "COS";
   disp.innerText= e.target.innerText;
  }

}
function tan(e){
if(e.target.innerText== "TAN"){
    ans.innerText=  Math.tan(quest.innerText*Math.PI/180);
   e.target.innerText= "atan";
   disp.innerText= "tan";
  }else if(e.target.innerText== "atan") {
    ans.innerText=  Math.atan(quest.innerText*Math.PI/180);
   e.target.innerText= "TAN";
   disp.innerText= "atan";
  }
}
function ln(){
ans.innerText=  Math.LN2 * quest.innerText;
disp.innerText= "ln";
}
function resArea(e){
 e.target.disabled=true;
}
function exp(){
ans.innerText=Math.exp(quest.innerText);
disp.innerText= "exp";
}

function logBaseTen(){
ans.innerText=  Math.log10(quest.innerText);
disp.innerHTML= "log<sub>2</sub>";
}
function logBaseTwo(){
ans.innerText=  Math.log2(quest.innerText);
disp.innerHTML= "log<sub>2</sub>";
}

function round(){
ans.innerText=  Math.round(quest.innerText);
disp.innerText= "round to n integer";
}

function convertm(e){
ans.innerText= quest.innerText*1000;
disp.innerText= "km-m";
}
function convertcm(e){
ans.innerText= quest.innerText*100000;
disp.innerText= "km-cm";
}

function offBtn(e){

quest.innerText="";
ans.innerText="";
disp.innerText= "off";

}
function onBtn(e){

ans.innerText="";
disp.innerText= "on";

}
//   dat.innerText= Date();