如何用空格或逗号分割字符串？

Question

If I try

"my, tags are, in here".split(" ,")

I get the following

[ 'my, tags are, in here' ]

Whereas I want

['my', 'tags', 'are', 'in', 'here']

Answer 1

String.split() can also accept a regular expression:

input.split(/[ ,]+/);

This particular regex splits on a sequence of one or more commas or spaces, so that eg multiple consecutive spaces or a comma+space sequence do not produce empty elements in the results.

Answer 2

you can use regex in order to catch any length of white space, and this would be like:

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" 

Answer 3

The suggestion to use .split(/[ ,]+/) is good, but with natural sentences sooner or later you'll end up getting empty elements in the array. eg ['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:

var str = 'whatever your text is...';
str.split(/[ ,]+/).filter(Boolean);

Answer 4

"my, tags are, in here".split(/[ ,]+/)

结果是：

["my", "tags", "are", "in", "here"]

Answer 5

input.split(/\\s*[\\s,]\\s*/)

… \\s* matches zero or more white space characters (not just spaces, but also tabs and newlines).

... [\\s,] matches one white space character or one comma

Answer 6

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。

Answer 7

When you need to split a string with some single char delimiters, consider using a reverse logic: match chunks of strings that consist of chars other than the delimiter chars.

So, to extract all chunks of chars other than whitespace (matched with \\s ) and commas, you can use

 console.log("my, tags are, in here".match(/[^\\s,]+/g)) // => ["my","tags","are","in","here"]

See the regex demo . String#match extracts all non-overlapping occurrences of one or more ( + ) chars other than whitespace and comma ( [^\\s,] ).