Internet Explorer返回错误的字符串长度 [英] Internet Explorer Returning Wrong Length of String

问题描述

我遇到了IE调用JavaScript的可能错误。 length 函数返回一个值，如果/当字符串派生自 .toLocaleString（）。

I've ran into a possible bug with IE where calling the JavaScript .length function returns a value that is off by 1 if/when the string was derived from .toLocaleString().

var d = new Date();
var locale = navigator.language;
var month = d.toLocaleString(locale, { month: "long"});
// month.length will return the length of the month string +1 
//(eg: if month = "March", month.length will return 6.)

有趣的是，上面的代码示例将返回true（在IE中）以下内容：（month [0]应该是M）

Interestingly, the code example of above will return true (in IE) for the following: (month[0] should be "M")

month[0] == "";
month[1] == "M";
month[2] == "a";
month[3] == "r";
month[4] == "c";
month[5] == "h";

在我的特定情况下，这导致我需要的问题。 slice（）月份。示例：如果月份是3月，那么IE将为 month.slice（0,3）而不是Mar返回Ma。

In my particular case, this is causing a problem where I need to .slice() the month. Example: If the month is March, then IE will return "Ma" for month.slice(0,3) instead of "Mar".

这是IE的已知错误吗？是否有针对此问题的修复和/或解决方法？

Is this a known bug with IE? Is there a fix and/or workaround for this problem?

运行此，并注意IE中 month.length 的错误。

我的环境：

操作系统：Win Server 2012 R2

OS: Win Server 2012 R2

IE版本：11.0.9600.18231（更新版本：11.0.29）

IE Version: 11.0.9600.18231 (Update Versions: 11.0.29)

区域设置：英语/美国

推荐答案

所以，我偶然发现了这篇文章 toLocaleDateString错误

So, I stumbled upon this post toLocaleDateString error in IE 11

它似乎是由toLocaleDateString函数在IE11中添加额外的LTR和RTL字符引起的。其中一条评论给出了正在使用的正则表达式替换功能。

It appears it is caused by the toLocaleDateString function added extra LTR and RTL characters in IE11. One of the comments gave a regex replace function that is working for me.

month.replace(/[^ -~]/g,'');

尝试在执行 .toLocaleDateString（），它应该工作。它对我有用。

Try adding that after you perform the .toLocaleDateString() and it should work. It worked for me.

我们鄙视IE的另一个原因。

Just another reason for us to despise IE.

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