`string.indexOfRegex()`

Get the index of the matching String given a regex.

Signature

indexOfRegex(regex: String) => Number | Null

indexOfRegex(regex: String, index: Number) => Number | Null

Gets the index in the source string that matches regex, starting at index.

Parameter Type Required Description

Parameter	Type	Required	Description
regex	String	Yes	Regex to match against the source string.
index	Number		Source string location to start matching against regex. default = `0`

regex

Yes

Regex to match against the source string.

index

Source string location to start matching against regex.
default = 0

Type	Description
Number	Index of match with regex.
Null	Match not found.

Type

Description

Index of match with regex.

Match not found.

'foo 123'.indexOfRegex('[0-9]')

'foo 123 abc 5678'.indexOfRegex('[0-9]', 10)

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