How to use a special character in CONFIG.js for connecting domoticz

[RapTile]

For some reason i can not use a special character in the config.js

config['domoticz_ip'] = 'http://user:#[email protected]:8080';
config['domoticz_ip'] = 'http://user:%23password192.168.1.40:8080';
config['domoticz_ip'] = 'http://user:\#password192.168.1.40:8080';
config['domoticz_ip'] = 'http://user:\\#password192.168.1.40:8080';
Etc.

None works...

How do you define a special character?