In IE, "x".split(/(x)/).length returns 0
在IE中，“x”.split（/（x）/）。length返回0
In Firefox, Chrome, Safari, and Opera, it returns 3.
在Firefox，Chrome，Safari和Opera中，它返回3。
Does anybody know the reason why? If possible, a reference link will be greatly appreciated.
有人知道原因吗？如果可能，将非常感谢参考链接。
I believe that it is a IE regex implementation issue, but I can't find any document about that.
我相信这是一个IE正则表达式实现问题，但我找不到任何关于它的文档。
3 个解决方案
#1
6
You're correct that there are implementation issues. IE both ignores empty values and capture blocks within regular expressions.
你确实存在实施问题。 IE都忽略空值并捕获正则表达式中的块。
So for
因此对于
"foo".split(/o/)
IE gives
IE给出了
[f]
where the other browsers give
其他浏览器给出的位置
["f","",""]
and when you add the capturing:
当你添加捕获时：
"foo".split(/(o)/)
IE performs the same, but the others add the captured delimiter to the resulting array to give
IE执行相同的操作，但其他人将捕获的分隔符添加到结果数组中
["f","o","","o",""]
So unfortunately you probably either need to avoid using split, or code around these issues.
所以不幸的是，您可能要么避免使用拆分，要么围绕这些问题进行编码。
#2
3
Here for example http://blog.stchur.com/2007/03/28/split-broken-in-ie/
例如http://blog.stchur.com/2007/03/28/split-broken-in-ie/
#3
1
I had the same problem with the broken IE implementation of split.
我遇到了与拆分的IE实施相同的问题。
Here's a small library file that fixed the problem perfectly.
这是一个小型库文件，可以完美地解决问题。
#1
6
You're correct that there are implementation issues. IE both ignores empty values and capture blocks within regular expressions.
你确实存在实施问题。 IE都忽略空值并捕获正则表达式中的块。
So for
因此对于
"foo".split(/o/)
IE gives
IE给出了
[f]
where the other browsers give
其他浏览器给出的位置
["f","",""]
and when you add the capturing:
当你添加捕获时：
"foo".split(/(o)/)
IE performs the same, but the others add the captured delimiter to the resulting array to give
IE执行相同的操作，但其他人将捕获的分隔符添加到结果数组中
["f","o","","o",""]
So unfortunately you probably either need to avoid using split, or code around these issues.
所以不幸的是，您可能要么避免使用拆分，要么围绕这些问题进行编码。
#2
3
Here for example http://blog.stchur.com/2007/03/28/split-broken-in-ie/
例如http://blog.stchur.com/2007/03/28/split-broken-in-ie/
#3
1
I had the same problem with the broken IE implementation of split.
我遇到了与拆分的IE实施相同的问题。
Here's a small library file that fixed the problem perfectly.
这是一个小型库文件，可以完美地解决问题。