I wanna mask a name with the provisions that if there are more than 4 letters it will form the following masking :
Jason Mamoa ---> Ja**n Ma**a
I have tried this :
var name ="Jason Mamoa";
var regex =/\b[^\W]{2}([^\W]{2,})[^\W]\b/g;
console.log(nama.replace(regex,"**$1*"));
but the opposite happened, like this :
Jason Mamoa --> **so* **mo*
You need to go the other way around - capture the first two letters, and the last letter, and replace with them separated by **:
var name ="Jason Mamoa";
var regex =/\b(\w{2})\w+(\w)\b/g;
console.log(name.replace(regex, '$1**$2'));If you want the resulting string to be the same length as the original, use a replacer function:
var name ="Jason Mammmmoa";
var regex =/\b(\w{2})(\w+)(\w)\b/g;
console.log(name.replace(
regex,
(_, first, middle, last) => `${first}${'*'.repeat(middle.length)}${last}`
));Note that [^\W] is equivalent to \w.
To also mask the last 2 characters of 3 and 4 character names, capture up to 2 leading characters, and have the last be optional:
var name ="Eli Mose";
var regex =/\b(\w{1,2})(\w{2,}?)(\w?)\b/g;
console.log(name.replace(
regex,
(_, first, middle, last) => `${first}${'*'.repeat(middle.length)}${last}`
));
Eli Mose ---> E** Mo**