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# Thread: Help with Prompt scripted

1. ## Help with Prompt scripted

I'm trying to make a calculator with prompts. I want it to give several different answers. Like one text area will display one answer (example a*b*c) and another text area will display a different answer (example a+b+c). From tutorials I know that to calculate the answer with prompts it would look like this:
return (a*b*c); break;

That would be only one of the equations. How would I get both of them and display them in two different text areas?

• I think you might understand better if I showed the source I have right now:

Code:
```<HEAD>

<SCRIPT LANGUAGE="JavaScript">

<!-- Begin
function gearCalc1(num) {
switch(num) {
case 0 : return (""); break;
case 1 : var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;
case 2 :  var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;
case 3 :  var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;
case 4 :  var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;
case 5 : var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;
case 6 : var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;

}
}
function gearCalc2(num) {
switch(num) {
case 0 : return (""); break;
case 1 : var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter+fDiameter+rbDiameter+rpm+gaWidth+gfWidth); break;
case 2 :  var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;
case 3 :  var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;
case 4 :  var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;
case 5 : var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;
case 6 : var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

return (pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth); break;

}
}
//  End -->
</script>

<!-- STEP TWO: Copy this code into the BODY of your HTML document  -->

<BODY>

<center>
<form name=GearCalc>
Type Of Gear
<select name="shape" size="1" onChange="this.form.area.value = gearCalc1(this.selectedIndex); this.form.gear.value = gearCalc2(this.selectedIndex);">
<option> ...
<option value="square">45/80 gear
<option value="triangle">80/125 gear
<option value="rectangle">no teeth
<option value="circle">0-25 gear
<option value="sphere">conservative
<option value="TG-22">TG-22
</select>
= <input type=text name=area size=10>
<p>
<input type=text name=gear size=10>
</form>
</center>

<p><center>```
Now I edited it so it does display it differently, but it's not the way I want it. The way I have iot now is that when its done with the first prompt it gives you the answer and then it will display the prompts again...

Anyway to fix this?

• Code:
```function gearCalc1(shape) {
switch (shape.selectedIndex) {
case 0 : return (""); break;
case 1 : var pDiameter = prompt("Please enter the Pitch Diameter:", "");
var fDiameter = prompt("Please enter the Fit Diameter:", "");
var rbDiameter = prompt("Please enter the Rotor Bore Diameter:", "");
var rpm = prompt("Please enter the RPM:", "");
var gaWidth = prompt("Please enter the Gear Axial Width:", "");
var gfWidth = prompt("Please enter the gfWidth:", "");

shape.form.area.value = pDiameter * fDiameter * rbDiameter * rpm * gaWidth * gfWidth;
shape.form.gear.value = Number(pDiameter) + Number(fDiameter) + Number(rbDiameter) + Number(rpm) + Number(gaWidth) + Number(gfWidth);
break;
//...other cases
}
...
<select name="shape" size="1" onChange="gearCalc(this)">```
If the math operation is addition, you need to convert the input string to number by using Number, parseFloat or parseInt methods because the + operator has 2 uses: addition and string concatenation.
If operation is multiplication, division, or subtraction, you don't need the conversion as the strings are internally converted to numbers.

• Thanks so much

As you can tell I'm new to java script. But anxious to learn

•

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