A common use of JSON is to exchange data to/from a web server.
When sending data to a web server, the data has to be a string.
Convert a JavaScript object into a string with JSON.stringify().
Stringify a JavaScript Array
It is also possible to stringify JavaScript arrays:
Imagine we have this array in JavaScript:
var arr = [ "John", "Peter", "Sally", "Jane" ];
Use the JavaScript function JSON.stringify() to convert it into a string.
var myJSON = JSON.stringify(arr);
The result will be a string following the JSON notation.
myJSON is now a string, and ready to be sent to a server:
Example(1)
var arr = [ "John", "Peter", "Sally", "Jane" ];
var myJSON = JSON.stringify(arr);
document.getElementById("demo").innerHTML = myJSON;
Complete Code For Creating JSON String From A JavaScript Array
<!DOCTYPE html>
<html>
<head>
<title>How To Create JSON String From A JavaScript Array</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<br>
<div class="text-center">
<h1 id="color" style="color: tomato">How To Create JSON String From A JavaScript Array</h1>
</div>
<br>
<div class="well">
<h2 id="demo1"></h2>
</div>
<script>
var arr = [ "John", "Peter", "Sally", "Jane" ];
var myJSON = JSON.stringify(arr);
document.getElementById("demo1").innerHTML = myJSON;
</script>
</div>
</body>
</html>