Calculator that Remembers!

Example 1

This calculator outputs what was computed each time

Simply type in a string such as 32 + 98 * 6 and click GO.

COMPUTE :   

Code:

var session, ans = 0;

function init(){   
	session=document.getElementById("output");
}

function comp(id){   
	var input = document.getElementById(id);
	var str = input.value;
	ans = eval(str);
	var ansNode = document.createTextNode("ans: " + str + " = " + ans);
	var parNode = document.createElement("p"); 
	parNode.appendChild(ansNode);
	session.appendChild(parNode);
	input.value="";
}

Output: