How do i match a string to a regex pattern in javascript, but the string does not have to follow the serial arrangement in the regex Pattern.
The regex pattern test against a string containing brackets with the conditions that;
- Open brackets must be closed by the same type of brackets.
- Open brackets must be closed in the correct order.
- Every close bracket has a corresponding open bracket of the same type.
This is what i tried;
const pattern = /^(())*({})*([])*$/
if i test it against these strings, it works fine
console.log(pattern.test("(){}[]")) //returns true
console.log(pattern.test("(]") //returns false
but if change the order the brackets appear in the regex then i get false
console.log(pattern.test("{}()[]") // returns false
I want the string of brackets to match the pattern no matter which brackets comes first or second as long as they meet the above conditions
4
If your task is to match any string that consists of one or more occurrences of a pair of empty brackets/parentheses/braces, you can simply use a regex solution like
^(?:()|[]|{})+$
See the regex demo.
Details
^– start of string(?:()|[]|{})+– one or more occurrences of()– a()substring|– or[]– a[]substring|– or{}– a{}substring
$– end of string.