Help- Javascript

//create and initialize a new object
var calc = new Object();
calc.enteredValue = "";   

function addItUp(theVal){

    //get the value from the user input and add it to the "calc" object as "enteredValue"

    calc.enteredValue = theVal;

    //test the entry- erase this line after confirming that the event handler works and prints whatever the user enters on the calculator into the screen.

    document.getElementById("display").value = "You entered: " + calc.enteredValue;

    //set the calc object's value
            // if it's an operator, what do you do?
            // if it's a number, what do you do? 
            // if it's an equals, what do you do?
            // if it's a clear, what do you do?
    //change the display to the current outcome

}


</script>