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javascript calculate multiple check boxes

Posted on 2009-05-08
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Last Modified: 2012-05-06
Hi all,
I have been scouring all over google for an example.  I am looking for an example javascript that can calculate multiple textboxes...
Quantity * Value
--------------------
Box1 * Box2
     +
Box3 * Box4
...etc...
= Total
Any examples will be appreciated.
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Question by:newbe101
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by:
Alsaibai earned 2000 total points
ID: 24341600
I hope this will help you out...

<SCRIPT LANGUAGE="JavaScript"> 
  
<!-- Begin
function  doMath() {
var one = eval(document.theForm.elements[0].value)
var two = eval(document.theForm.elements[1].value)
var prod = one  *   two
alert("The product of "  +  one  +  " and "  +
two  +  " is "  +  prod  +  ".")
}
// End -->
</SCRIPT>
<CENTER>
<FORM NAME="theForm">
Multiply
<INPUT TYPE="text">
 By
<INPUT TYPE="text">
<INPUT TYPE="button" VALUE="Show result" onClick="doMath()">
</FORM>
</CENTER>

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Author Comment

by:newbe101
ID: 24341605
thanks for the example... I am going to check it out.
0
 

Author Closing Comment

by:newbe101
ID: 31579688
thanks... you got me going in the right direction
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