How to pass params to HTML tag usage.

[tmyeahsing]

For usage like <li data-i18n="message-key"></li>, how can i pass params to the message-key.

Message may be like this: {"message-key": "i18n is very good, it serves $1 developers"}

[shukabum]

you have to define the message key as a variable first and then you can assign the value to it.
let message_key;

message_key="i18n is very good, it serves $1 developers";