![/^[a-z0-9_-]{3,16}$/
Description:
We begin by telling the parser to find the beginning of the string (^),
followed by any lowercase letter (a-z), number (0-9), an underscore, or
a hyphen. Next, {3,16} makes sure that are at least 3 of those
characters, but no more than 16. Finally, we want the end of the string
($).
String that matches:
my-us3r_n4m3
String that doesn't match:
th1s1s-wayt00_l0ngt0beausername (too long)](https://image.slidesharecdn.com/3-190424080743/85/3-2-1-javascript-regex-example-4-320.jpg)
3.2.1 javascript regex example
- 2. Matching a Username the input name should only contains a-z, 0-9, and -,_ The input name should be minimum of 3 letters and maximum of 13.
- 4. /^[a-z0-9_-]{3,16}$/ Description: We begin by telling the parser to find the beginning of the string (^), followed by any lowercase letter (a-z), number (0-9), an underscore, or a hyphen. Next, {3,16} makes sure that are at least 3 of those characters, but no more than 16. Finally, we want the end of the string ($). String that matches: my-us3r_n4m3 String that doesn't match: th1s1s-wayt00_l0ngt0beausername (too long)
- 7. Matching a Hex Value
- 8. Matching a Hex Value
- 10. Matching a Slug
- 13. Matching a URL
- 14. Matching a URL
- 15. Matching an IP Address
- 16. Matching an IP Address
- 17. Matching an HTML Tag