What Is JavaScript JSON Object
What Is JavaScript JSON Object?
✍: FYIcenter.com
The JSON object is a built-in object in the JavaScript engine
that offers 2 functions to parse and generate JSON text strings:
1. JSON.parse() - Parses a text string from a JSON text string, constructs the JavaScript value. An optional reviver function can be provided to perform a transformation on the resulting object before it is returned.
2. JSON.stringify() - Converts a JavaScript value to a JSON text string, An optional replacer function is specified to replace some values.
Here is a JavaScript code example, JSON-Hello.html, that shows you how to use the built-in JSON object:
<!-- JSON-Hello.html
Copyright (c) FYIcenter.com
-->
<html>
<body>
<script type="text/javascript">
var object = {"msg":"Hello World!"};
var str = JSON.stringify(object);
document.write("<p>JSON text string from JSON.stringify():</p>");
document.write("<pre>str = "+str+"</pre>");
var val = JSON.parse(str);
document.write("<p>Value from JSON.parse():</p>");
document.write("<pre>val.msg = "+val.msg+"</pre>");
</script>
</body>
</html>
Open this example, JSON-Hello.html, in a Web browser. You see the following:
JSON text string from JSON.stringify():
str = {"msg":"Hello World!"}
Value from JSON.parse():
val.msg = Hello World!
2017-08-16, 227👍, 0💬
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