[英]How can I add multiple numbers in JavaScript?
I'm new to JavaScript Programming.. I've been researching for the solution but still.. no luck. 我是JavaScript编程的新手。.我一直在研究解决方案,但是仍然..没有运气。 Eg: I want to add like 6 numbers (or more) that the user will input.
例如:我想添加用户将输入的6个(或更多)数字。 I use this code but only the first three are calculated.
我使用此代码,但仅计算前三个。 When I add like four numbers already, 'NAN' appears.
当我已经添加了四个数字时,就会出现“ NAN”。 Nan means invalid computation.
Nan表示无效的计算。
<script type="text/javascript">
function show() {
var a = document.calc.B1.value*1;
var b = document.calc.B5.value*1;
var c = document.calc.B9.value*1;
var d = document.calc.B12.value*1;
var e = document.calc.B17.value*1;
var f = document.calc.B21.value*1;
document.calc.t1.value = a + b + c + d + e + f;
}
</script>
Only B1, B5 and B9 are calculated. 仅计算B1,B5和B9。 Here's the working code:
这是工作代码:
<script type="text/javascript">
function show() {
var a = document.calc.B1.value*1;
var b = document.calc.B5.value*1;
var c = document.calc.B9.value*1;
document.calc.t1.value = a + b + c;
}
</script>
Here's the form action: 这是表单动作:
<form action="sysdocadd.php" method="post" name="calc">
t1= TOTAL (text type
<td><div align="center" class="style66"><input name="t1" type="text" size="18" id="t1" value="0.00"/></div></td>
When I click calculate button, the result will be shown on t1 text area. 当我单击“计算”按钮时,结果将显示在t1文本区域中。 here's the code for that..
这是该代码。
<tr>
<td><span class="style77">Click to add</span></td>
<td><div align="center" class="style66"><input type=button onClick='show()'value=Calculate /></div></td>
</tr>
Please help me. 请帮我。 :(
:(
Here's the sysdocadd.php code: 这是sysdocadd.php代码:
<?php
$con = mysql_connect("localhost","user","password");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("dbconnect", $con);
$sql="INSERT INTO contents (reportnum, postedby, sysdate, userdateinp, B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12,
B13, B14, B15, B16, B17, B18, B19, B20, B21, B22, B23, B24, B25, B26, B27, B28, B29, B30,
B31, B32, B33, B34, B35, B36, B37, B38, B39, B40, B41, B42, B43, B44, B45, B46, B47, B48, B49, B50, B51, B52,
B53, B54, B55, B56, t1, t2, t3, t4)
VALUES
('$_POST[reportnum]','$_POST[postedby]','$_POST[sysdate]','$_POST[userdateinp]','$_POST[B1]','$_POST[B2]','$_POST[B3]',
'$_POST[B4]','$_POST[B5]','$_POST[B6]','$_POST[B7]','$_POST[B8]','$_POST[B9]','$_POST[B10]','$_POST[B11]','$_POST[B12]',
'$_POST[B13]','$_POST[B14]','$_POST[B15]','$_POST[B16]','$_POST[B17]','$_POST[B18]','$_POST[B19]','$_POST[B20]','$_POST[B21]',
'$_POST[B22]','$_POST[B23]','$_POST[B24]','$_POST[B25]','$_POST[B26]','$_POST[B27]','$_POST[B28]','$_POST[B29]','$_POST[B30]',
'$_POST[B31]','$_POST[B32]','$_POST[B33]','$_POST[B34]','$_POST[B35]','$_POST[B36]','$_POST[B37]','$_POST[B38]','$_POST[B39]','$_POST[B40]',
'$_POST[B41]','$_POST[B42]','$_POST[B43]','$_POST[B44]','$_POST[B45]','$_POST[B46]','$_POST[B47]','$_POST[B48]','$_POST[B49]','$_POST[B50]',
'$_POST[B51]','$_POST[B52]','$_POST[B53]','$_POST[B54]','$_POST[B55]','$_POST[B56]','$_POST[t1]','$_POST[t2]','$_POST[t3]','$_POST[t4]')";
if (!mysql_query($sql,$con))
{
die('Error: ' . mysql_error());
}
echo "1 record added";
mysql_close($con)
?>
You can simplify your own answer a little bit: 您可以稍微简化一下自己的答案:
function addNums() {
var sum = 0;
for(i=0; i<14; i++)
sum += parseFloat(document.forms["addition"]["B" + (4*i+1)].value);
document.forms["addition"].t1.value = sum;
}
Problem's solved. 问题解决了。
<script language="javascript" type="text/javascript">
function addNums(){
num_1=Number(document.addition.B1.value);
num_2=Number(document.addition.B5.value);
num_3=Number(document.addition.B9.value);
num_4=Number(document.addition.B13.value);
num_5=Number(document.addition.B17.value);
num_6=Number(document.addition.B21.value);
num_7=Number(document.addition.B25.value);
num_8=Number(document.addition.B29.value);
num_9=Number(document.addition.B33.value);
num_10=Number(document.addition.B37.value);
num_11=Number(document.addition.B41.value);
num_12=Number(document.addition.B45.value);
num_13=Number(document.addition.B49.value);
num_14=Number(document.addition.B53.value);
valNum=num_1+num_2+num_3+num_4+num_5+num_6+num_7+num_8+num_9+num_10+num_11+num_12+num_13+num_14;
document.addition.t1.value=valNum;
}
</script>
THANKS Y'ALL. 谢谢。 :)
:)
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