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Select ราคาขายในฐานข้อมูลมาแก้ไขและให้คำนวณใหม่หน้านั้นเลย จะคำนวณยังไงคะ มันไม่คำนวณให้อัติโนมัติคะ |
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กำหนดแอตทริบิว class ให้กับ <td> ที่แสดงราคารวม <td class="price" .........
เราจะสามารถใช้ jQuery ในการหาค่าราคารวมของแต่ละแถวได้ดังนี้
Code (JavaScript)
function refreshTotal(){
var sum = 0;
$('.price').each(function(){
sum += parseFloat($(this).text());
});
}
ตัวแปร sum จะเก็บค่าผลรวมทั้งหมด เพื่อนำไปใช้งานต่อไป
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Date :
2013-06-23 18:59:57 |
By :
{Cyberman} |
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เอาไปใส่ตรงไหน กำหนดยังไงคะ เขียนให้ดูหน่อยค่ะ
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Date :
2013-06-23 21:16:28 |
By :
jungnaka |
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ช่วยหน่อยค่ะ พี่ๆ..
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Date :
2013-06-23 23:41:26 |
By :
jungnaka |
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ยังไม่ได้ค่ะ
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Date :
2013-06-24 14:25:41 |
By :
jungnaka |
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Code (PHP)
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>jQuery Calculator</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
</head>
<body>
<label for="txt1">Text 1 : </label>
<input type="text" name="txt1" id="txt1" class="price"><br>
<label for="txt2">Text 2 : </label>
<input type="text" name="txt2" id="txt2" class="price"><br>
<label for="txt3">Text 3 : </label>
<input type="text" name="txt3" id="txt3" class="price"><br>
<label for="txt4">Text 4 : </label>
<input type="text" name="txt4" id="txt4" class="price"><br>
<label for="txt5">Text 5 : </label>
<input type="text" name="txt5" id="txt5" class="price"><br>
<input type="button" name="btn_calculator" id="btn_calculator" class="btn_calculator" value="Calculator"><br>
<label for="txt_sum">Total : </label>
<input type="text" name="txt_sum" id="txt_sum">
<hr>
<div id="show_txt">Total : ???</div>
</body>
</html>
<script>
$('.btn_calculator').click(function(){
var sum = 0;
$('.price').each(function(){
sum += parseFloat($(this).val());
});
$('#txt_sum').val(sum.toFixed(2));
$('#show_txt').text("Total : "+sum.toFixed(2));
});
</script>
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Date :
2013-06-24 15:19:03 |
By :
popnakub |
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ถ้าจะอับเดตค่าลงฐานข้อมูลด้วย เอาตัวแปรตรงไหนลงคะ แบบวิธีง่ายๆก็ได้ค่ะ
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Date :
2013-06-24 17:06:28 |
By :
jungnaka |
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Load balance : Server 05
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