Floating Calculator

James Crooke Nov 23, 2005

It's a calculator that floats on the page. Drag it around and use it the same way you would the normal Windows calculator. Nice looking too!

Download the graphic files here,

The JavaScript Source: Math Related: Floating Calculator

Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Command-s). The script is yours!!!

<!-- TWO STEPS TO INSTALL FLOATING CALCULATOR:

1.  Copy the coding into the HEAD of your HTML document
  2.  Add the last code into the BODY of your HTML document  -->

<HEAD>

-->
</style>

var calculation = "";
var resultDone = false;

function addToCalc(val) {
  if(isNaN(val) && isNaN(calculation.substring(calculation.length-1, calculation.length)))
    return false;

if(!isNaN(val) && resultDone) {
    resetCalc();
    resultDone = false;
  } else if(isNaN(val) && resultDone) {
    resultDone = false;
  }
  calculation += val;
  showResult();
}

function addToCalcDirect(val) {
  calculation = val;
}

function resetCalc() {
  calculation = "";
  showResult();
}

function positiveNegative() {
  if(calculation.substring(0, 1) == "-")
    calculation = calculation.substring(1, calculation.length);
  else
    calculation = "-" + calculation;
  showResult();
}

function percentage() {
  try {
    calculation = eval(calculation) / 100;
  } catch(e) {
    reportError("Error!");
  }
  resultDone = true;
  showResult();
}

function squareRoot()
{
  try {
    calculation = Math.sqrt(eval(calculation));
  } catch(e) {
    reportError("Error!");
  }
  resultDone = true;
  showResult();
}

function showResult() {
  calculation = calculation.toString();
  if(calculation == "NaN") {
    reportError("Error!");
  } else {
    document.getElementById("result").value = calculation;
  }
}

function reportError(msg) {
  calculation = msg;
  document.getElementById("result").value = msg;
}

function closeCalculator() {
  document.getElementById("calculator").style.display = "none";
}

function about() {
  msg = "CJ Floating Calculator\n=============\n\n";
  msg += "Developed by James Crooke\nhttp://www.cj-design.com";
  alert(msg);
}

var ie = document.all;
var ns6 = document.getElementById && !document.all;
var dragapproved=false;
var z, x, y;

function move(e) {
  if (dragapproved) {
    z.style.left=ns6? temp1+e.clientX-x: temp1+event.clientX-x;
    z.style.top=ns6? temp2+e.clientY-y : temp2+event.clientY-y;
    return false;
  }
}

<BODY>

<div id="demo">
  <form onsubmit="calculate(); return false;">
  <div id="calculator" class="drag">
    <div class="calculatorcontainer">
      <div id="version"><a href="http://www.cj-design.com" title="web design uk" onclick="return false">CJ Floating Calculator V1.0</a></div>
      <div id="control"><a href="#" onclick="about();return false"><img src="/img/float-calc/q.gif" /></a> <a href="#" onclick="closeCalculator();return false"><img src="/img/float-calc/close.gif" style="position:relative;top:-1px"/></a></div>
      <input type="text" name="input" size="16" id="result" onclick="this.focus()" onkeyup="addToCalcDirect(this.value)"><br />
      <input type="button" value="1" onclick="addToCalc(this.value)"><input type="button" value="2" onclick="addToCalc(this.value)"><input type="button" value="3" onclick="addToCalc(this.value)"><input type="button" value="+" onclick="addToCalc(this.value)" class="operation"><br />
      <input type="button" value="4" onclick="addToCalc(this.value)"><input type="button" value="5" onclick="addToCalc(this.value)"><input type="button" value="6" onclick="addToCalc(this.value)"><input type="button" value="-" onclick="addToCalc(this.value)" class="operation"><br />
      <input type="button" value="7" onclick="addToCalc(this.value)"><input type="button" value="8" onclick="addToCalc(this.value)"><input type="button" value="9" onclick="addToCalc(this.value)"><input type="button" value="*" onclick="addToCalc(this.value)" class="operation"><br />
      <input type="button" value="+/-" onclick="positiveNegative()" class="operation"><input type="button" value="0" onclick="addToCalc(this.value)"><input type="button" value="." onclick="addToCalc(this.value)" class="operation"><input type="button" value="/" onclick="addToCalc(this.value)" class="operation"><br />
      <input type="button" value="sqrt" onclick="squareRoot()" class="operation"><input type="button" value="%" onclick="percentage()" class="operation"><input type="button" value="c" onclick="resetCalc()" class="operation"><input type="button" value="=" onclick="calculate()" class="equals">
    </div>
  </div>
  </form>
</div>

<p><center>
<font face="arial, helvetica" size"-2">Free JavaScripts provided<br>
by <a href="http://javascriptsource.com">The JavaScript Source</a></font>
</center><p>

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