I would like to find the match as following in the string:

1. s = '()' -> result should be true

2. s = '(]' -> result should be false

3. s = '()[]{}' result should be true

4. s = '([])' result should be true

5. s = '{([])}' result should be true

   const isValid = (s) => { //how to return the value? } console.log(isValide('[]') //should be true

CodePudding user response：

If there is no nested of the same brackets, you might use:

^(?:\([^()]*\)|\[[^\]]*]|{[^{}]*}) $

The pattern repeats 1 or more times matching from (...) or [...] or {...} using a negated character class.

The ^ asserts the start of the string, the $ asserts the end of the string. All 3 bracket types are repeated 1 or more times in a grouping construct (?:...)

Regex demo

CodePudding user response：

Use a regex pattern to match your requirements. Example Here

is a playground to test and check.