1 <html> 2 ????<head> 3 ????????<title>多列求和</title> 4 ????????<script type="text/javascript"> 5 ????????????function addAll(){ 6 ????????????????var total_value=0; 7 ????????????????for(i=0;i<document.myform.check.length;i++){ 8 ????????????????????if(document.myform.check[i].checked){ 9 ????????????????????????total_value+= parseInt( document.myform.money[i].value );10 ????????????????????}11 ????????????????} ???12 ????????????????alert(total_value); ???????????????13 ????????????????document.getElementById("total").value = total_value;14 ????????????????????????????15 ????????????}16 ????????????17 ????????????18 ????????????19 ????????</script>20 ????21 ????</head>22 ????<body>23 ????????<form action="" method="post" name="myform">24 ????????????<table border="1" cellpadding="0" cellspacing="0" width="20%" height="40%">25 ????????????????<tr>26 ????????????????????<td>金额</td>27 ????????????????????<td>是否求和</td>28 ????????????????</tr>29 ????????????????<tr>30 ????????????????????<td><input type="text" name="money" /></td>31 ????????????????????<td><input type="checkbox" name="check" /></td>32 ????????????????</tr>33 ????????????????<tr>34 ????????????????????<td><input type="text" name="money" /></td>35 ????????????????????<td><input type="checkbox" name="check" /></td>36 ????????????????</tr>37 ????????????????<tr>38 ????????????????????<td><input type="text" name="money" /></td>39 ????????????????????<td><input type="checkbox" name="check" /></td>40 ????????????????</tr>41 ????????????????<tr>42 ????????????????????<td><input type="text" name="money" /></td>43 ????????????????????<td><input type="checkbox" name="check" /></td>44 ????????????????</tr>45 ????????????????<tr>46 ????????????????????<td><input type="button" value="求和" onclick="addAll()" /></td>47 ????????????????????<td><input type="text" id="total" readonly /></td> ???48 ????????????????</tr>49 ????????????????50 ????????????????51 ????????????</table>52 ????????????53 ????????</form>54 ????????55 ????</body>56 </html>HTML--JS ?多列求和
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