Javascript Regular Expression:Convert indian landline number string to hypenated and bracketed

Here we will convert a indian landline number with isd + std + phone number

to hypenated phone number & bracketted phone number using regular expression.

Code:

var landline = "912367233427"

var pattern=/(\d{2})(\d{4})(\d{6})/

//hypeneted - the replace above is termed as replace with subexpression

var formattedLandline = landline.replace(pattern,"$1-$2-$3")

console.log(formattedLandline)

//bracketed

var formattedLandlineBracket = landline.replace(pattern,"(+$1) $2 $3")

console.log(formattedLandlineBracket)

Output:

91-2367-233427

(+91) 2367 233427