sufiiiyan

1. Useful regex
2. Playground
3. Resource
4. Working url and number range

Useful regex

#	Title	regex	Description/notes
1	Regex to allow alphanumeric, spaces, some special characters	^(?!\d+$)(?:[a-zA-Z0-9][a-zA-Z0-9 @&$]*)?$	not allowing only number
		^(?!$)(?:[A-Za-z0-9][A-Za-z0-9 @&$,.?_-]*)?$	getting invalid character class due to -