Username Patterns

Only lowercase letters and numbers; at least 5 characters, but no limit.  [a-zd.]{5,}

Source: html.com

Username Patterns

Only letters (either case), numbers, hyphens, underscores, and periods. (Not the slash character, that is being used to escape the period.) The username must start with a letter and must be between 1 and 20 characters long (inclusive).  [a-zA-Z][a-zA-Z0-9-_.]{1,20}

Source: html.com

Username Patterns

Only letters (either case), numbers, and the underscore; no more than 15 characters.  [A-Za-z0-9_]{1,15}

Source: html.com

Similar codes

23 votes111 views1 answer
Accept only image input file
Html
8 votes98 views1 answer
How do i set a pdf to be download link in html
Html
0 vote108 views7 answers
Mdi icon size and color
Html
0 vote117 views1 answer
Is jeremy ugly
Html
0 vote106 views1 answer
Click on div with class javascript
Html
3 votes106 views1 answer
Html class and id difference
Html
0 vote118 views1 answer
Html if screen is smaller thatn
Html
1 vote111 views3 answers
Button email html
Html
3 votes119 views1 answer
Sound on click
Html
1 vote110 views1 answer
Webkit autofill background color
Html