Restrict-possible-usernames-

JavaScript
1

Tell us what’s happening:

Any one completed this challenge…
how to check the condition of atleast two char in Regex

Your code so far



let username = "JackOfAllTrades";
let userCheck = /0-9$/i; // Change this line
let result = userCheck.test(username);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36.

Link to the challenge:

2

To specify n or more of something you can use {n,} after it

So for example if we want 4 or more of the letter a, we can use a{4,} in our regex

1 Like
3

Hello, Do you remember + ? We can use it to find character that at least occur one time. So there is the answer:

let username = "JackOfAllTrades";
let userCheck = /[a-zA-Z][a-zA-Z]+[0-9]*/; // Change this line
let result = userCheck.test(username);
2 Likes
4

Dear @zero_loop can you explain your answer, please!

5

First, we use [a-zA-Z] to make sure there is one character in the name,

then, we use [a-zA-Z]+ to make sure there is at least one character in the name,

thus, there are at least two characters in the name, right?

finally, we use [0-9]* to find numbers.

If I express not clearly, please let me know!

2 Likes
6