Here's how to create these symbols on your keyboard in OS X:
- Basic setup; to be done once:
- Open the International preference panel in System Preferences
- Under the Input Menu tab, check the Unicode Hex Input box
- Check the Show input menu in menu bar checkbox. The Input Method Menu Extra will appear as a national flag in the top right of your screen.
- Click the flag and select U+ Unicode Hex Input
- Hold down Option while entering the hexadecimal value and the symbol appears
To use these symbols in HTML:
- Prefix a decimal value with &#
- Prefix a hexadecimal value with &#x
- Suffix with a semicolon, ;
To use these symbols in Javascript, prefix the hexadecimal value with u.