JavaScript函数调用将编码的单引号％27解释为文字 [英] JavaScript function call interprets encoded Single Quote %27 as literal

问题描述

要求:

• 我必须 fetch 一个包含单引号的URL.
• 我需要通过调用函数；例如< a href =" javascript:my_function('my_quote％27s.txt');> ...</a> .

• I have to fetch a URL that contains a single quote.
• I am required to call a function via; e.g. <a href="javascript:my_function('my_quote%27s.txt');">...</a>.

在尝试正确编码单引号(％27 )的麻烦之后，Waterfox和Chrome 两者都继续抛出错误.Chrome浏览器允许我看到该错误已触发，因为浏览器将其自己解码为字符串(当我 not 对其进行编程时)将％27 转到了文字单引号字符，因此甚至在调用该函数之前就会出错(例如， my_function('my_quotes's.txt'))，并且对引号进行内部解码并导致明显的三重引号问题).

After a lot of hassle of trying to properly encode a single quote (%27) both Waterfox and Chrome both keep throwing errors. Chrome allowed me to see that the error was triggered because the browsers are taking it upon themselves to decode strings (when I have not programed them to) turning %27 in to the literal single quote character so it errors out before the function is even called (e.g. my_function('my_quotes's.txt') with the quote being internally decoded and causing the obvious triple quote issue).

我可以使用PHP的 htmlentities($ file_name，ENT_QUOTES)，尽管我不得不用字符串替换' ，这似乎毫无意义.

I could use PHP's htmlentities($file_name, ENT_QUOTES) though I'd have to string replace ' which seems pointlessly convoluted.

• 我需要 支持单引号并通过 javascript:进行呼叫.
• 我希望在调用函数时避免对字符串进行字面解释.
• 我想尽量避免大惊小怪，只使用JavaScript不会抱怨的 编码.
• 没有框架或库.

• I am required to support the single quote and make the call via javascript:.
• I'd like to avoid literal interpretation of encoded strings when calling functions.
• I'd like to minimize the fuss and just use an encoding that JavaScript won't complain about.
• No frameworks or libraries.

我如何正确地编码单引号，以使JavaScript本身不会以某种方式对其内部进行解码并抛出错误?

How do I properly encode a single quote in a manner that JavaScript won't take it upon itself to somehow internally decode it and throw errors?

推荐答案

我需要通过 javascript:

发抖.请解决此问题.自从十年！正是造成URI解码的原因- javascript:模式后跟一个百分号编码的值来解释.

Shudder. Please fix this. It's known as a bad practice since over ten years! And it's exactly what's causing the URI decoding - the javascript: schema is followed by an percent-encoded value to interpret.

因此，如果您以js代码开头

So if you start with the js code

my_function('my&quote's.txt');

它将成为其中之一

javascript:my_function%28%27my%26quote%27s.txt%27%29%3B
javascript:my_function(%27my%26quote%27s.txt%27)%3B
javascript:my_function('my%26quote's.txt')%3B

(撇号'和括号实际上不需要进行编码).

(the apostrophe ' and the parenthesis actually don't need to be encoded).

但是'my_quote's.txt'不是您要开始使用的有效JavaScript.您实际上要查找的是'my_quote \'s.txt'或'my_quote's.txt'.要在 javascript:-方案URI中使用它们，它将变为

But 'my_quote's.txt' is not the valid javascript that you want to start with. What you're actually looking for is 'my_quote\'s.txt' or "my_quote's.txt'. To use these in a javascript:-scheme URI, it becomes

javascript:my_function('my_quote\'s.txt')%3B
javascript:my_function("my_quote's.txt")%3B

因此，如果您从动态文件名值生成此 href 字符串，则必须

So if you generate this href string from a dynamic filename value, you must

1. 用字符串转义JS字符串文字中的文件名
2. 在 javascript 网址
中对完整代码进行URL编码
3. html-entity-escape完整的 href 属性值

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