Multilanguage website Using javascript, json and list of words are stored in database SQL server

Anyone have example code for multilanguage website ( switch language)
Using javascript, json and list of words are stored in database SQL server?

I have example code, but it is using javascript only, list of words are included in javascript , not in database table/SQL server = http://www.lingumania.com/index.html

This is the example code=
Just copy paste this code into a webpage for translating some words below =
Download lingumania.js from www.lingumania.com

<script type="text/javascript">
var linguJSON = {
"languages": [
{
"lang_name": "English",
"lang_code": "en",
"url_pattern": "?"
},
{
"lang_name": "Indonesia",
"lang_code": "id",
"url_pattern": "?"
}
],
"translated_segments": [
{
"source": "Sign In",
"target": "MASUK",
},
{
"source": "Logout",
"target": "Keluar",
},
{
"source": "Home",
"target": "Beranda",
}
]
};
</script>
<script src="https://path.com/JavaScript/lingumania.min.js"></script>