CODEWITHSUNDEEP
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hharry
hharry

Reputation: 412

How to read json file located in project folder in iPhone PhoneGap using Javascript

I have to read a JSON file from folder that is located in a project.

I am using the following code:

var obj = "www/places.json";

How can I read a JSON file located in project folder www in iPhone PhoneGap using Javascript?

Upvotes: 2

Views: 10989

Answers (2)

Jayprakash Dubey
Jayprakash Dubey

Reputation: 36447

I had same problem and got through with following snippet:

dojo.ready(function(){

   var xhrArgs = {
          url: "file:///Users/Desktop/configJSON.txt",
          handleAs: "json",
          load: function(data){

           targetNode.innerHTML = data;

                   // Your data from JSON
               alert("Name : "+data.fields[0].name+" Type :          "+data.fields[0].type+" Alias : "+data.fields[0].alias
               +" Editable : "+data.fields[0].editable);


      },
      error: function(error){
                      // targetNode.innerHTML = "An unexpected error occurred: " + error;
                      alert("An unexpected error occurred: " + error);
              }
              }

              // Call the asynchronous xhrGet
              var deferred = dojo.xhrGet(xhrArgs);
          });

      </script>

    </head>

    <body>

              <div id="licenseContainer"></div>
<body>

Upvotes: 0

Gajotres
Gajotres

Reputation: 57309

You would read it just like it is on your server.

Solution 1 - jQuery

If jQuery usage is not a problem then use it like this:

//Load categories object JSON
jQuery.getJSON("categories.json", function(data){         
    // data is yours parsed object
});

Example :

HTML : 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"/>
    <script src="http://www.fajrunt.org/js/jquery-1.9.1.min.js"></script>       
    <title>Read JSON Demo</title>

    <script>    
        jQuery.getJSON("categories.json", function(data){         
            alert(data.balance);
        });         
    </script>
</head>

<body>
    Read JSON Demo
</body>
</html>

JSON file : 

{"balance":1000.21,"num":100,"nickname":null,"is_vip":true,"name":"foo"}

Solution 2 - Pure javascript

If you want to use only vanilla javascript then this is a solution for you

var xmlhttp;
var jsonObject;

// code for IE7+, Firefox, Chrome, Opera, Safari
if (window.XMLHttpRequest)
{
    xmlhttp=new XMLHttpRequest();
}
// code for IE6, IE5
else
{
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}

xmlhttp.onreadystatechange=function()
{
    if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
        jsonObject = JSON.parse(xmlhttp.responseText);
        alert(jsonObject.balance);                       
    }
}

xmlhttp.open("GET","categories.json",true);
xmlhttp.send();

Example :

HTML : 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"/>
    <title>Read JSON Demo</title>

    <script>
        var xmlhttp;
        var jsonObject;

        // code for IE7+, Firefox, Chrome, Opera, Safari
        if (window.XMLHttpRequest)
        {
            xmlhttp=new XMLHttpRequest();
        }
        // code for IE6, IE5
        else
        {
            xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
        }

        xmlhttp.onreadystatechange=function()
        {
            if (xmlhttp.readyState==4 && xmlhttp.status==200)
            {
                jsonObject = JSON.parse(xmlhttp.responseText);
                alert(jsonObject.balance);                       
            }
        }

        xmlhttp.open("GET","categories.json",true);
        xmlhttp.send();
    </script>
</head>

<body>
    Read JSON Demo
</body>
</html>

JSON file : 

{"balance":1000.21,"num":100,"nickname":null,"is_vip":true,"name":"foo"}

Upvotes: 15

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