Question

im trying to find if there is any javascript to format a string for display, so for exam “1234”- or any string over length 2- would become 12** i know there is a replace method but not sure how this would work. any suggestions welcome. thanks much

Answer 1

Assuming you want to mask the equivalent number of characters you can replicate * length - 2 times & append the 1st 2 characters of the original string;

var str = "123456";

var numCharsToKeep = 2;
if (str.length > numCharsToKeep)
    str = str.substr(0, numCharsToKeep) + Array(str.length - numCharsToKeep + 1).join("*")

== "12******"