I have a page on geocities that I would like to add a box where someone could insert an installation number and then my page would display the (installation number + 4) - 25 for their serial number. But I can't find an example anywhere to help me out. Can anyone explain?
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add two numbers and subtract one
- Thread starter dmccallum
- Start date
<SCRIPT LANGUAGE="JavaScript">
function calculate()
{
x = parseInt(document.installation.number.value)
x = x + parseInt(4) - parseInt(25)
document.installation.number.value=x
}
</SCRIPT>
<form name="installation" method="POST" action="test.html">
<input type="text" name="number" value="">
<BR>
<BR>
<img onClick="calculate()" src="">
</form>
function calculate()
{
x = parseInt(document.installation.number.value)
x = x + parseInt(4) - parseInt(25)
document.installation.number.value=x
}
</SCRIPT>
<form name="installation" method="POST" action="test.html">
<input type="text" name="number" value="">
<BR>
<BR>
<img onClick="calculate()" src="">
</form>
- Thread starter
- #4
- Thread starter
- #6
You're right. I found the solution to that one by saving the code but how do I get the result of the calculation to display? Can I create another text box to the right of the calculation button that would display the result after hitting the button?
Well, in my example I thought that you want to see the result in the same text field, that is how I understood your question.
If you want to see the result in another text field - yes sure you can!
Here's a new one:
<html>
<body>
<form name=form1>
input:
<input type=text name=input value="">
output:
<input type=text name=output value="">
<br>
<input type=button value="calculate" onclick="form1.output.value=form1.input.value-21">
</form>
</body>
</html>
If you want to see the result in another text field - yes sure you can!
Here's a new one:
<html>
<body>
<form name=form1>
input:
<input type=text name=input value="">
output:
<input type=text name=output value="">
<br>
<input type=button value="calculate" onclick="form1.output.value=form1.input.value-21">
</form>
</body>
</html>
- Thread starter
- #8
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