<html> <body> <html> <head> <title>-</title> <script language="javascript"> function Calcular(){ if (document.frm.v1.value == "") { var v1 = 0; } else { var v1 = document.frm.v1.value; } . . . . . . var P1=parseFloat(document.frm.v1.value); var P2=parseFloat(document.frm.v2.value); var P3 =parseFloat(document.frm.v3.value); document.frm.total.value=P1+P2+ P3; } </script> </head> <body> <form name="frm"> <input type="text" name="v1" value><BR> <input type="text" name="v2"><BR> <input type="text" name="v3"><BR><BR> <input type="text" name="total" onClick="Calcular()"><BR> </form> </body> </html>
Se me pudessem ajudar agradecia