5 Function's Calculator

Here is a really simple JavaScript calculator with just 5 functions (add, subtract, multiply, divide, and power). This example can help you see how JavaScript evaluates math functions! Check it out!

5 Function Calculator
Simply click inside the window below, use your cursor to hilight the script, and copy the script into a new file in your text editor (Note Pad or MultiEdit) and save.

  <HEAD> <SCRIPT LANGUAGE="JavaScript">      </SCRIPT>  <BODY> <CENTER> <FORM name="formx"><input type=text size=4 value=12 name="a"> <input type="button" value=" + " onClick="a_plus_b(this.form)"> <input type="button" value=" - " onClick="a_minus_b(this.form)"> <input type="button" value=" x " onClick="a_times_b(this.form)"> <input type="button" value=" / " onClick="a_div_b(this.form)"> <input type="button" value=" ^ " onClick="a_pow_b(this.form)"> <input type="number" size=4 value=3 name="b"> = <input type "number" value=0 name="ans" size=9> </FORM> </CENTER>  // End --> </table> </form> </center> </body></html>