Need a regular expression that should avoid a specific string or all string which are having below mentioned symbols

Special character to avoid:

1. Colon (:)
2. Double forward slash (//)
3. Dot (.)
4. Question Mark (?)
5. Ampersand (&)
6. Equal To (=)
7. Single forward slash (/)

Note:

• Only symbols used in the URL pattern should be validated/avoided.
• Other than that all other symbols are accepted
• Regex should be working in javascript specifically