Created
September 22, 2015 11:18
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Sum two fields
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| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Sum Form</title> | |
| <script> | |
| function startCalc(){ | |
| interval = setInterval("calc()",1); | |
| } | |
| function calc(){ | |
| one = document.SumForm.firstBox.value; | |
| two = document.SumForm.secondBox.value; | |
| document.SumForm.thirdBox.value = (one * 1) + (two * 1); | |
| } | |
| function stopCalc(){ | |
| clearInterval(interval); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <form name="SumForm"> | |
| <input type=text name="firstBox" value="" onFocus="startCalc();" | |
| onBlur="stopCalc();"> + <input type=text name="secondBox" value="" onFocus="startCalc();" | |
| onBlur="stopCalc();"> = <input type=text name="thirdBox"> | |
| </form> | |
| </body> | |
| </html> |
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