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3 years ago
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makanan 1 <input type="text" id="txt1" onkeyup="sum();"/> . makanan 2 <input type="text" id="txt2" onkeyup="sum();"/> . makanan 3 <input type="text" id="txt3" onkeyup="sum();"/> . minuman 1 <input type="text" id="txt4" onkeyup="sum();"/> . minuman 2 <input type="text" id="txt5" onkeyup="sum();"/> minuman 3 <input type="text" id="txt6"/> total <script>function sum() { var txtFirstNumberValue = document.getElementById('txt1').value; var txtSecondNumberValue = document.getElementById('txt2').value; var txtThreeNumberValue = document.getElementById('txt3').value; var txtFourNumberValue = document.getElementById('txt4').value; var txtFiveNumberValue = document.getElementById('txt5').value; var result = parseFloat(txtSecondNumberValue) + parseInt(txtFirstNumberValue); var result = parseFloat(txtThreeNumberValue) + parseInt(txtSecondNumberValue); var result = parseFloat(txtFourNumberValue) + parseInt(txtThreeNumberValue); var result = parseFloat(txtFiveNumberValue) + parseInt(txtThreeNumberValue); if (isNaN(result)) { var document.getElementById('txt6').value = result; } } </script>
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