如何捕获可选模式之间的任何模式组？

Question

What would be the best approach to match an optional pattern at the end of a string, after an any pattern, using Regex in Javascript? Is there a way to make an optional pattern inclusive when it comes at the end of the string and after an any pattern?

My Regex:

'{any:any}'.match(/\{?(.+):(.+)\}?/);

Current Result:

['{any:any}', 'any', 'any}', index: 0, input: '{any:any}', groups: undefined]

Expected Result:

['{any:any}', 'any', 'any', index: 0, input: '{any:any}', groups: undefined]

Answer 1

If you want to keep the curly's optional, you can use 2 capture groups in combination with a negated character class:

{?([^{}:]+):([^{}:]+)}?

Regex demo

 console.log('{any:any}'.match(/{?([^{}:]+):([^{}:]+)}?/));

If you don't want to cross newlines, you can exclude them:

{?([^{}:\n]+):([^{}:\n]+)}?