javascript 逗号后跟空格或仅逗号的正则表达式
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regex for comma followed by space or just comma
提问by DVM
is it possible to make a regex with multiple delimiters? For example I want to split a string which can come in two forms: 1. "string1, string2, string3" or 2. "string1,string2,string3". I've been trying to do this in javascript but with no success so far.
是否可以使用多个分隔符制作正则表达式？例如，我想拆分一个字符串，它可以有两种形式：1.“string1,string2,string3”或 2.“string1,string2,string3”。我一直试图在 javascript 中做到这一点，但到目前为止没有成功。
回答by David says reinstate Monica
Just use a regex split():
只需使用正则表达式split()：
var string = "part1,part2, part3, part4, part5",
components = string.split(/,\s*/);
The reason I've used *rather than ?is simply because it allows for no white-space or many white-spaces. Whereas the ?matches zero-or-one white-space (which is exactly what you asked, but even so).
我使用*而不是的原因?仅仅是因为它允许没有空格或许多空格。而?匹配零个或一个空格（这正是您所要求的，但即便如此）。
Incidentally, if there might possibly be white-spaces preceding the comma, then it might be worth amending the split()regex to:
顺便说一句，如果逗号前面可能有空格，那么可能值得将split()正则表达式修改为：
var string = "part1,part2 , part3, part4, part5",
components = string.split(/\s*,\s*/);
console.log(components);?
Which splits the supplied string on zero-or-more whitespace followed by a comma followed by zero-or-more white-space. This may, of course, be entirely unnecessary.
它将提供的字符串拆分为零个或多个空格，后跟一个逗号，后跟零个或多个空格。当然，这可能完全没有必要。
References:
参考：
回答by Jo?o Silva
Yes, make the whitespace (\s) optional using ?:
是的，使用以下方法将空格 ( \s)设为可选?：
var s = "string1,string2,string3";
s.split(/,\s?/);
回答by dejjub-AIS
In addition to silva
除了席尔瓦
just in case you have doubt it can have more than one space then use (or no space)
以防万一你怀疑它可以有多个空格然后使用（或没有空格）
var s = "string1, string2, string3";
s.split(/,\s*/);
