如何用空格或逗号分割 JavaScript 字符串？
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How can I split a JavaScript string by white space or comma?
提问by Hoa
If I try
如果我尝试
"my, tags are, in here".split(" ,")
I get the following
我得到以下
[ 'my, tags are, in here' ]
Whereas I want
而我想要
['my', 'tags', 'are', 'in', 'here']
回答by Jon
String.splitcan also accept a regular expression:
String.split也可以接受正则表达式：
input.split(/[ ,]+/);
This particular regex splits on a sequence of one or more commas or spaces, so that e.g. multiple consecutive spaces or a comma+space sequence do not produce empty elements in the results.
这个特定的正则表达式在一个或多个逗号或空格的序列上拆分，因此例如多个连续空格或逗号+空格序列不会在结果中产生空元素。
回答by jonschlinkert
The suggestion to use .split(/[ ,]+/)is good, but with natural sentences sooner or later you'll end up getting empty elements in the array. e.g. ['foo', '', 'bar'].
使用的建议.split(/[ ,]+/)很好，但是对于自然句子，您迟早会在数组中获得空元素。例如['foo', '', 'bar']。
Which is fine if that's okay for your use case. But if you want to get rid of the empty elements you can do:
如果这对您的用例没问题，那很好。但是如果你想摆脱空元素，你可以这样做：
var str = 'whatever your text is...';
str.split(/[ ,]+/).filter(Boolean);
回答by Cemil Dogan
you can use regex in order to catch any length of white space, and this would be like:
您可以使用正则表达式来捕获任何长度的空格，这将类似于：
var text = "hoi how are you";
var arr = text.split(/\s+/);
console.log(arr) // will result : ["hoi", "how", "are", "you"]
console.log(arr[2]) // will result : "are"
回答by gabitzish
"my, tags are, in here".split(/[ ,]+/)
the result is :
结果是：
["my", "tags", "are", "in", "here"]
回答by KaptajnKold
input.split(/\s*[\s,]\s*/)
input.split(/\s*[\s,]\s*/)
… \s*matches zero or more white space characters (not just spaces, but also tabs and newlines).
...\s*匹配零个或多个空白字符（不仅是空格，还有制表符和换行符）。
... [\s,]matches one white space character or one comma
...[\s,]匹配一个空格字符或一个逗号
If you want to avoid blank elements from input like "foo,bar,,foobar", this will do the trick:
如果您想避免输入中的空白元素，例如"foo,bar,,foobar"，这可以解决问题：
input.split(/(\s*,?\s*)+/)
input.split(/(\s*,?\s*)+/)
The +matches one or more of the preceding character or group.
所述+匹配的一个或多个前面的字符或基团。
Edit:
编辑：
Added ?after comma which matches zero or one comma.
?在匹配零个或一个逗号的逗号之后添加。
Edit 2:
编辑2：
Turns out edit 1 was a mistake. Fixed it. Now there has to be at least one comma or one space for the expression to find a match.
原来编辑1是一个错误。修复。现在，表达式必须至少有一个逗号或一个空格才能找到匹配项。
回答by grantwparks
When I want to take into account extra characters like your commas (in my case each token may be entered with quotes), I'd do a string.replace() to change the other delimiters to blanks and then split on whitespace.
当我想考虑像逗号这样的额外字符（在我的情况下，每个标记都可以用引号输入）时，我会执行 string.replace() 将其他分隔符更改为空格，然后在空格上拆分。
