How Can I Split a String in Javascript While Retaining the Delimiter?

Javascript and regex: keeping the separator when splitting a string

The objective is to split a string with a specific delimiter, but also retain the delimiter. An example string is "aaaaaa

† bbbb

‡ cccc", which needs to be split using "

&" followed by a special character.

The initial approach, string.split(/

[a-zA-Z0-9] ;/g), eliminates the delimiter. To preserve it, consider the following options:

"1、2、3".split(/(、)/g) == ["1", "、", "2", "、", "3"]

Note that this method can be used to split characters or sequences of characters.

"1、2、3".split(/(?!、)/g) == ["1、", "2、", "3"]

This approach will prevent splitting at a particular delimiter.

"1、2、3".split(/(.*?、)/g) == ["", "1、", "", "2、", "3"]

This method allows for capturing the delimiter in a separate group, providing more flexibility.

// Split a path, but keep the slashes that follow directories
var str = 'Animation/rawr/javascript.js';
var tokens = str.match(/[^\/]+\/?|\//g);

This approach can be used for complex splitting scenarios, such as preserving slashes in a file path.

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