script.js

var a =document.getElementById("area");
function press(i)
{
 console.log(i)
 a.value+=i;
}
function Clear()
{
 a.value="";
}

//THIS FUNCTION WILL HELP IN REMOVING THE ISSUE WITH FLOATING POINT NUMBERS
function strip(number) {
 var no = parseFloat(number).toPrecision(12)
 return (no * 1).toString();
}

function Eval()
{
 let p =a.value;
 while(p.includes("^"))
 {
 p=p.replace('^',"**");
 }
 console.log(p);
 let temp = eval(p);
 a.value=strip(temp);
}
function back()
{
 a.value=a.value.substring(0,a.value.length-1);
}