<!DOCTYPE html>
<html lang="en-AU">
<head>
<meta charset="utf-8">
<title>JSON-ND Example Parser: Javascript</title>
<script>
const JSONND =
{
Parse : function(ndObj, strict)
{
var failed = false;
var failedMessage= "";
var obj = JSON.parse(ndObj);
for (var propertyName in obj) {
var p = propertyName.indexOf(":");
var v = obj[propertyName];
if (p > 0) {
//specific check for <Big>int (not number) ECMAScript 2020
if (propertyName.substr(p+1,3)==='int')
{
var nv=parseInt(v); // it will truncate floats,
if (strict)
{
if (!nv || (parseFloat(v)-nv!=0) )
{
failedMessage += '"'+propertyName+'" value <'+v+'> not a valid Integer;';
failed=true;
v=null;
}
} else {
v=nv;
}
}; // add more validation.
obj[propertyName.substr(0, p)] = v;
delete(obj[propertyName]);
}
};
if (failed) throw failedMessage;
return obj;
}
};
</script>
</head>
<body>
<h1>Example demonstration of JSON-ND parser.</h1>
<script>
var nd = '{"abc:string":"abc contains a string", "def:integer" : "not a number"}';
document.write("<h3>Original 'nd' object:<pre>",nd,"<pre></h3>");
document.write("<p>See that there is no 'nd.abc' property: abc=<b>" ,nd.abc,"</b></p>");
document.write("<p>Attempting accessing 'nd.abc:string' property is not valid Javascript</p>");
document.write("<h3>Then validate with JSON_ND_Parse:<pre>",JSON.stringify(JSONND.Parse(nd)),"</pre></h3>");
document.write("<p style='color: red'>Note that 'def' failed validation, but not <i>strict</i> so the error is ignored</p>");
document.write("<h3>With <b>strict</b> operator in place:");
try
{
var strictNd = '{"abc:string":"abc contains a string", "def:integer" : "20.5"}';
document.write("<h3>'StrictNd' object:<pre>",strictNd,"<pre></h3>");
document.write("<pre>",JSON.stringify(JSONND.Parse(strictNd,true)),"</pre>");
} catch (e)
{
document.write(" Caught exception: <pre>",e,"</pre>");
}
</script>
</body>
</html>