Transmitting JSON information to a client? Utilizing D3.js to visualize JSON data

Question

Transmitting JSON information to a client? Utilizing D3.js to visualize JSON data

Currently in the process of updating my website's form from plain HTML to JQuery. Here is the flow:

User inputs 5 integers into the form
We make a REST call to a web service
The server runs calculations, generates a JSON object

Now that we have the JSON result object, how do we deliver it to the client? Do we need to persist it with a specific URL on our web server? That could lead to hundreds of JSON files cluttering up the server directory.

D3.js on the client side waits for data via AJAX

var data; // global

d3.json("path/to/file.json", function(error, json) {
if (error) return console.warn(error);
     data = json;
     visualizeit();
});

Once data is available, render it for the client and remove the calculator from the screen

Struggling with the concept of needing a unique URL for each JSON object when making AJAX requests. How can I get d3.js to render my JSON object without having to store multiple files on the server?

javascript ajax json d3.js

Answer 1

Answer №1

Tips for Passing Parameters in d3.json Requests

When working with d3.json requests, passing parameters can be done through a javascript object or query parameter. Below are two common methods:

data = {}

data.var1 =5;

data.var2 =10;

var my_request = d3.xhr(url)

my_request.post(JSON.stringify(data), function(error,received)){

};

Alternatively,

d3.json(url+"?"+"var1=5&var2=10",function(error,received)){

}

Once these form parameters are parsed on the server end, generating new JSON data becomes straightforward. However, ensure that cross-origin requests are allowed if running the script from a local or external page.

To maintain data persistence across multiple calls, consider embedding callbacks or utilizing global variables.

Answer 2

Tips for Passing Parameters in d3.json Requests

When working with d3.json requests, passing parameters can be done through a javascript object or query parameter. Below are two common methods:

data = {}

data.var1 =5;

data.var2 =10;

var my_request = d3.xhr(url)

my_request.post(JSON.stringify(data), function(error,received)){

};

Alternatively,

d3.json(url+"?"+"var1=5&var2=10",function(error,received)){

}

Once these form parameters are parsed on the server end, generating new JSON data becomes straightforward. However, ensure that cross-origin requests are allowed if running the script from a local or external page.

To maintain data persistence across multiple calls, consider embedding callbacks or utilizing global variables.

Transmitting JSON information to a client? Utilizing D3.js to visualize JSON data

Answer №1

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