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json conversion with javascript/jquery

Posted on 2011-03-06
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Last Modified: 2012-05-11
K so i have a json file the format is below on the code section named var originalJSON.

I need to get the format into the var finalJSON format using 2 variables that will be referencing the category field of the originalJSON.  So in other words in am looking through the categories section of the originalJSON using my variables and needing to construct the finalJSON off of that.
var first = "corporate";
var second = "products";

var originalJSON = 
[
    {
        "title": "first",
        "category": "corporate",
        "id": "20" 
    },
    {
        "title": "second",
        "category": "products",
        "id": "21" 
    },
    {
        "title": "third",
        "category": "corporate",
        "id": "22" 
    },
    {
        "title": "fourth",
        "category": "animals",
        "id": "23" 
    } 
]; 


var finalJSON = {
    "categories": [
        {
            "categoryname": "corporate",
            "category": [
                {
                    "title": "first",
                    "category": "corporate",
                    "id": "20" 
                },
                {
                    "title": "third",
                    "category": "corporate",
                    "id": "22" 
                } 
            ] 
        },
        {
            "categoryname": "products",
            "category": [
                {
                    "title": "second",
                    "category": "products",
                    "id": "21" 
                } 
            ] 
        } 
    ] 
}

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Question by:Brant Snow
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2 Comments
 
LVL 83

Expert Comment

by:leakim971
ID: 35050993
Check this one (it don't use the variables) :


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script language="javascript">
	var originalJSON = [{"title":"first","category":"corporate","id":"20"},{"title":"second","category":"products","id":"21"},{"title":"third","category":"corporate","id":"22"},{"title":"fourth","category":"animals","id":"23"}];
	var finalJSON = null;

	window.onload = function() {
		finalJSON = { "categories":[] };
		for(var i=0;i<originalJSON.length;i++) {
		   var found = false;
		   for(var j=0;j<finalJSON.categories.length;j++) {
			  if( originalJSON[i]["category"] == finalJSON["categories"][j]["categoryname"] ) {
				   found = true;
				   break;
			  }
		   }
		   if(!found) {
			   finalJSON["categories"][j] = {"categoryname":originalJSON[i]["category"], "category":[]};
		   }
		   finalJSON["categories"][j]["category"].push( originalJSON[i] );
		}
	}

</script>
</head>
<body>
</body>
</html>

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Accepted Solution

by:
leakim971 earned 2000 total points
ID: 35051054
This one worry about the two variables :


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script language="javascript">

	var originalJSON = [{"title":"first","category":"corporate","id":"20"},{"title":"second","category":"products","id":"21"},{"title":"third","category":"corporate","id":"22"},{"title":"fourth","category":"animals","id":"23"}];
	var finalJSON = null;

	var first = "corporate";
	var second = "products";

	window.onload = function() {
		finalJSON = { "categories":[] };
		for(var i=0;i<originalJSON.length;i++) {
			originalJSONCategory = originalJSON[i]["category"];
			if( originalJSONCategory == first || originalJSONCategory == second ) {
				var found = false;
				for(var j=0;j<finalJSON.categories.length;j++) {
					if( originalJSONCategory == finalJSON["categories"][j]["categoryname"] ) {
						found = true;
						break;
					}
				}
				if(!found) {
					finalJSON["categories"][j] = {"categoryname":originalJSON[i]["category"], "category":[]};
				}
				finalJSON["categories"][j]["category"].push( originalJSON[i] );
			}
		}
	}

</script>
</head>
<body>
</body>
</html>

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