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JSON Text to JavaScript Object using eval() Example: JSON Tutorial
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In a real world scenario JSON data is received as HTTPRequest from a web server, this data has to be converted into JavaScript Object in order to be displayed on a web page .
JavaScript eval() function is used to convert JSON text into JSON Object.
The JavaScript Compiler parses JSON text to JavaScript object.
Note that the text must be surrounded by braces to avoid errors.
Nested JSON Object :
JavaScript eval() function is used to convert JSON text into JSON Object.
The JavaScript Compiler parses JSON text to JavaScript object.
Note that the text must be surrounded by braces to avoid errors.
Nested JSON Object :
<html>
<head>
<script type="text/javascript">
function jsonEvalEx() {
//JSON Text
var mySongs = '{"songs":[' +
'{"songName":"Imagine","songArtist":"John Lennon" },' +
'{"songName":"Voodoo Child","songArtist":"Jimi Hendrix" },' +
'{"songName":"Kashmir","songArtist":"Led Zeppelin" }]}';
var javaScriptObj = eval ("(" + mySongs + ")");
var data = "";
data = data + "Song : " + javaScriptObj.songs[0].songName + "<br>";
data = data + "Artist : " + javaScriptObj.songs[0].songArtist + "<br><br>";
data = data + "Song : " + javaScriptObj.songs[1].songName + "<br>";
data = data + "Artist : " + javaScriptObj.songs[1].songArtist + "<br><br>";
data = data + "Song : " + javaScriptObj.songs[2].songName + "<br>";
data = data + "Artist : " + javaScriptObj.songs[2].songArtist + "<br><br>";
document.getElementById("mySongs").innerHTML = data;
}
</script>
</head>
<body onload="jsonEvalEx();">
<div id="mySongs"></div>
</body>
</html>
Output
Song : Imagine Artist : John Lennon Song : Voodoo Child Artist : Jimi Hendrix Song : Kashmir Artist : Led Zeppelin
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