The Above Regular Expression Question was featured on HackerRank,It should return true if string contains Mr./Mrs./Ms./Dr./Er. in the beginning followed by group of letters.
For Eg: Mr.Abc is true but Mr.Abc. isn't But my code returns Mr.Abc. as true.
let inp="Mr.Abc.";
let re=new RegExp(/^Mr\.|^Ms\.|^Mrs\.|^Dr\.|^Er\.[A-Za-z]/);
console.log(re.test(inp));P.S.Sorry for my Bad Regular Expression statement i'm currently in the learning stage ..
It's a grouping problem, as well as an issue with the fact that you don't test for the end of the string using $. Using your expression, Mr.Abc. returns true because it matches ^Mr\.
Change your expression as follows:
let re = /^(Mr|Ms|Mrs|Dr|Er)\.[A-Za-z]+$/;
I tried the same thing and it resolved this issue with this simple change.
let re = new RegExp(/^Mr\.|^Ms\.|^Mrs\.|^Dr\.|^Er\.[A-Za-z]*$/);
This would make the search stringent while checking the string. Hope this helps :)
Mr., Dr.123, and a whole lot of other cases that should not be matched.Mr.Abc., so the answer is incorrect.