I am working on big JSON data and used JSONStream npm module for parsing it. I can parse data from JSON Array Object. But one of scnerios get a simple JSON object(not array).
In this case, I am not able to parse multiple fields. I am able to parse/extract only one field.
My Json Structure, i want to parse/extract status.replicas and status.updatedReplicas
My code,
request({url:'ssss',verify:'False',headers:{'Authorization':'Bearer zzzz','Accept':'application/json','User-Agent':'zzz'}})
.pipe(JSONStream.parse('status.replicas'))
.pipe(es.mapSync(function (data) {
console.log("Log "+data);
})) ;
This is giving data =1 how can I parse both replicas and updatedReplicas
If I use JSONStream.parse('*') then output data = Deployment it is taking only kind element form my JSON.
What you should do is access status, and then use data.updatedReplicas & data.replicas
request({url:'ssss',verify:'False',headers:{'Authorization':'Bearer zzzz','Accept':'application/json','User-Agent':'zzz'}})
.pipe(JSONStream.parse('status'))
.pipe(es.mapSync(function (data) {
console.log("Log ", data.replicas, data.updatedReplicas);
})) ;
Note: event-stream has been archived
Related
I'm having this collection of objects which are inside a html text area:
{"name":"John", "lname":"Doe","company":"example company","email":"johndoe#example.com"},{"name":"Katie","lname":"Jake","company":"example company","email":"katie#example.com"},
...
...
...
Is there a way to send the whole collection to node js and iterate through it to get values of objects?
My AJAX code:
$.ajax({
type: "POST",
url: "https://example.com/nodeapp",
data: '['+document.getElementById("list").value+']',
success: function(data) {
console.log(data);
}
});
I tried to do a foreach on req.body, but it doesn't seem to work:
var arr = req.body;
arr.foreach(element=>{
console.log(element.email);
})
Gives the error:
TypeError: arr.foreach is not a function
At first , you have to parse the body by using JSON.parse() function .
Like this :
var arr = JSON.parse(req.body);
arr.forEach(element=>{
console.log(element.email);
});
The javascript's foreach also defined as arr.forEach(...) not arr.foreach(...) .
I found my problem! Incase someone is stuck with the same thing, the whole thing was a string:
'[{"name":"John", "lname":"Doe","company":"example company","email":"johndoe#example.com"},
{"name":"Katie","lname":"Jake","company":"example company","email":"katie#example.com"},
...
...]'
Which was considered as one property in JSON which has no value while the server received it. Pretty much like this:
{
"<<the array in string format>>" : ""
}
How I fixed this was, I pushed the objects separately into a new array and sent it to server with JSON content type. (Which was an actual array of objects)
Problem Summary: can't parse through string that's formatted as a JSON object from .json file
Long Version:
I have some tweets I'm processing with Python where I create a json file I'm wanting to pass into d3.js and parse. I'm writing the tweets I get, into a file, so I have to serialize them with the json.dump() command in Python before I write them to a file.
Python
def on_data(self, data):
f = open("tweets.json","a")
tweet = json.loads(data)
d = {
"created": tweet["created_at"],
"text": tweet["text"]
}
final_tweet = json.dumps(d)
f.write(final_tweet)
f.close()
return True
However when I get the json file and try to grab it in my d3.json("tweets.json") it prints out the correct json format in the file:
{
tweet:[
{"key":"value"},
{"key":"value"}
]
}
but I cannot parse the data with the code I'm using because console.log(JSON.parse(data)) does not print out any object value.
d3.text("tweets.json", function(error, data){
if (error) return console.warn(error);
console.log("hello3");
console.log(JSON.parse(data));
});
EDIT I edit the file that gets written to by manually adding braces at the top and bottom.
Use this Json instead and check your Json data here
{
"keys":[
{"key":"value"},
{"key":"value"}
]
}
I'm creating a D3 bubble chart, using json data. I'm using sinatra for my app, and my json data is available at localhost:4567/data.json
I tried using
var myData = [];
$.get('data.json', function(data) {
myData = data;
console.log(myData);
.......
and I get the correct values in the javascript console, but the bubble chart does not render. (The rest of the code works if I copy and paste the data from 'data.json' and set it to a var, but it does not work if I use the $get method).
Do you have any ideas on how I could access this json data from localhost:4567?
Much appreciated,
Tim
I think what is probably going on is that jquery isn't automatically parsing the data as a JSON object due to missing MIME headers in the response from your server. Try using getJSON instead.
you can simply use
d3.json('data.json', function(data) {
myData = data;
console.log(myData);
.......
to read the json file
Trying to pull data from parse.com and use underscore.js I tried using this to build a table of the data. When I run it with hard coded json it works but when I try running it with pulled data returns an empty table.
Parse.initialize("", "");
var allDeals = Parse.Object.extend("Deal");
var query = new Parse.Query(allDeals);
query.find({
success: function(results){
var deals = JSON.stringify(results);
var template = $("#usageList").html();
$("#target").html(_.template(template,{deals:deals}));
},
error: function(error) {
alert('something was wrong');
}
});
Thanks in advance!
Like #mu said it would be easier to see whats in results..
But I have run into this with Parse before. Taking a guess.. You can try this
$('#target').html(_.template(template, { deals: results.models }));
"results" is a backbone collection and "models" holds the array of objects you are after.
Presumably you're getting a JavaScript object of some sort in results in your success callback. Then you serialize that to a JSON string with:
var deals = JSON.stringify(results);
That leaves you with a string in deals and your template probably doesn't know what to do with a string, it probably wants an object or whatever was in results in the first place. Try skipping the stringification and just feed results straight into the template:
$('#target').html(_.template(template, { deals: results }));
I've started using Newtonsoft.Json.Schema.JsonSchemaGenerator along with various property attributes over in my C# code to help keep my client script DRY. What I'd like to do is create a default initialized object client-side based on the schema from the server. This would be useful for, say, when the user clicks 'New Foo' to add a new entry into a table.
Obviously I can just code it up to iterate the .Properties and build up the new object, which is what I'm doing at the moment. However I'd prefer to avoid reinventing any wheels.
Are there any JS libraries for working with JSON schema that will do this, among other nifty things I've yet to realize I need?
1/29/2013 UPDATE
Some people have attempted to answer my question and have been off base, and as a result have received some negative feedback from the SO community. So let me attempt to clarify things. Here is the challenge:
In JS client script, you have an object that represents the JSON Schema of another object. Let's say, this came from the server via JSON.NET and is the representation of a C# class.
Now, in the JS client script, create one of these objects based upon the JSON Schema. Each field/property in the object must be default initialized according to the schema, including all contained objects!
BONUS: Bind this new object to the UI using MVVM (eg Knockout). Change some of the fields in response to user input.
Send this new object to the server. The server-side code will add it to a collection, database table, whatever. (Yes, the object will be sent as JSON using Ajax -- we can assume that)
No duplication! The only place where the class is defined is in the server-side code (C# in my example). This includes all metadata such as default values, description text, valid ranges, etc.
Yes there is (I tried it with NodeJS):
JSON Schema defaults
Link updated.
i think...you have to use two way binding with your HTML code...so, once your client side change you will get on your costume js file.
check here for knockout js.
Knock Out JS Link
and on C# code use : $("#urlhidden").val() OR Document.GetElemenyByID("#urlhidden").val().
here you will get array/list or textbox value
Use json with Ko
create new viewmodel for knockout js which you will get the idea about on above link.
and create a json call
like:
self.LoadMAS_Client = function () {
try {
var params = { "clientID": ClientId };
$.ajax({
type: "POST",
url: "http://" + ServerString + "/Services/LogisticsAppSuite-Services-Web-Services-MasClientService.svc/Json/GetAllLevelSubClients",
contentType: 'application/json',
data: JSON.stringify(params),
dataType: 'json',
async: false,
cache: false,
success: function (response) {
// in response u will get the data.and use as per your requirement.
eg. self.SelectedClient(response.your value);
},
error: function (ErrorResponse) {
}
});
}
catch (error) {
}
};
================================New Update ==========================================
i think..one way you can do...get data on xml format at C# code and covert into json string...check below code // To convert an XML node contained in string xml into a JSON string
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
string jsonText = JsonConvert.SerializeXmlNode(doc);
// To convert JSON text contained in string json into an XML node
XmlDocument doc = (XmlDocument)JsonConvert.DeserializeXmlNode(json);