te')); return $arr; } /* 遍历用户所有主题 * @param $uid 用户ID * @param int $page 页数 * @param int $pagesize 每页记录条数 * @param bool $desc 排序方式 TRUE降序 FALSE升序 * @param string $key 返回的数组用那一列的值作为 key * @param array $col 查询哪些列 */ function thread_tid_find_by_uid($uid, $page = 1, $pagesize = 1000, $desc = TRUE, $key = 'tid', $col = array()) { if (empty($uid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('uid' => $uid), array('tid' => $orderby), $page, $pagesize, $key, $col); return $arr; } // 遍历栏目下tid 支持数组 $fid = array(1,2,3) function thread_tid_find_by_fid($fid, $page = 1, $pagesize = 1000, $desc = TRUE) { if (empty($fid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('fid' => $fid), array('tid' => $orderby), $page, $pagesize, 'tid', array('tid', 'verify_date')); return $arr; } function thread_tid_delete($tid) { if (empty($tid)) return FALSE; $r = thread_tid__delete(array('tid' => $tid)); return $r; } function thread_tid_count() { $n = thread_tid__count(); return $n; } // 统计用户主题数 大数量下严谨使用非主键统计 function thread_uid_count($uid) { $n = thread_tid__count(array('uid' => $uid)); return $n; } // 统计栏目主题数 大数量下严谨使用非主键统计 function thread_fid_count($fid) { $n = thread_tid__count(array('fid' => $fid)); return $n; } ?>jquery - Javascript calculation gives too many zero digits - Stack Overflow

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    jquery - Javascript calculation gives too many zero digits - Stack Overflow

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    I think it's time get some second opinions on the javascript I'm working on at the moment.

    I'm trying to create a calculator to tell people if they can save money by using a subscription etc etc. The calculation itself is done by som inputs from the client and some prevalues from Umbraco CMS.

    The result I get from the calculator at the moment is "right" in that the actual numbers are correct, but there's just too many zeroes in it.

    The calculator can be found here: my calculator

    The test data I'm using is the following:

    • Antal ansatte: 4
    • Gennemsnitlig ordreværdi kr. (ca.): 400
    • Antal ordrer årligt (ca.): 5500
    • Overskudsgrad (hvad er det?): 2.7

    Which gives the output: 712800.0000000001

    I tried to divide this by 100 and, of course, it just moved the ma/dot two steps the left. Still there's all those zeroes.

    Any help/hint is greatly appreciated! :-)

    Thanks in advance,

    Bo

    P.S. The result I'm looking for would be 7128.00

    I think it's time get some second opinions on the javascript I'm working on at the moment.

    I'm trying to create a calculator to tell people if they can save money by using a subscription etc etc. The calculation itself is done by som inputs from the client and some prevalues from Umbraco CMS.

    The result I get from the calculator at the moment is "right" in that the actual numbers are correct, but there's just too many zeroes in it.

    The calculator can be found here: my calculator

    The test data I'm using is the following:

    • Antal ansatte: 4
    • Gennemsnitlig ordreværdi kr. (ca.): 400
    • Antal ordrer årligt (ca.): 5500
    • Overskudsgrad (hvad er det?): 2.7

    Which gives the output: 712800.0000000001

    I tried to divide this by 100 and, of course, it just moved the ma/dot two steps the left. Still there's all those zeroes.

    Any help/hint is greatly appreciated! :-)

    Thanks in advance,

    Bo

    P.S. The result I'm looking for would be 7128.00

    • javascript
    • jquery
    Share Improve this question asked Jun 29, 2011 at 17:11 bomortensenbomortensen 3,39610 gold badges57 silver badges77 bronze badges 0
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    5 Answers 5

    Reset to default 11

    I believe you want to call toFixed on your integer.

    (712800.00000001/100).toFixed(2)
"7128.00"

    It will change your number into a string, but if it is for display purposes it should be fine.

    You can do something like this:

    value.toFixed(2);

    This will round off all your trailing decimals to only 2.

    You may want to use the round() method like this:

    var val = Math.round(val*100)/100

    This will give you the 2-decimal place precision you want, with rounding when needed.

    Try this:

    http://www.mredkj./javascript/nfbasic2.html

    It is Number Format code for decimal places.

    I suspect that you're running into floating point rounding errors (Is floating point math broken?). Try the solutions presented in Is there a definitive solution to javascript floating-point errors?.

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