Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying The JavaScript JSON Cookbook
  • Table Of Contents Toc
  • Feedback & Rating feedback
The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

By : Ray Rischpater, Brian Ritchie
1 (2)
close
close
The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

1 (2)
By: Ray Rischpater, Brian Ritchie

Overview of this book

If you're writing applications that move structured data from one place to another, this book is for you. This is especially true if you've been using XML to do the job because it's entirely possible that you could do much of the same work with less code and less data overhead in JSON. While the book's chapters make some distinction between the client and server sides of an application, it doesn't matter if you're a frontend, backend, or full-stack developer. The principles behind using JSON apply to both the client and the server, and in fact, developers who understand both sides of the equation generally craft the best applications.
Table of Contents (12 chapters)
close
close
11
Index

Sending JSON to your web server

Some AJAX requests just need to get data at a URL. This is the case when the server updates an object for all clients, or when the URL for an object uniquely identifies the object (common when you design a service using Representational State Transfer (REST)). Other times, you may want to pass JavaScript data to the server, such as when you have a complex query you'd like the server to process. To do this, create your JavaScript object, then stringify it and pass the string containing the JSON to the XMLHttpRequest object's send method.

How to do it...

Omitting the code that creates an XMLHttpRequest object, you send JSON to a server with the following code:

function doAjax() {
  // … create XMLHTTPObject as before

    var request = { 
    call: "kf6gpe-7"
  };

xmlhttp.open("POST","/", true);
xmlhttp.setRequestHeader("Content-Type","application/json");
xmlhttp.send(JSON.stringify(request))...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Edit Note

Modal Close icon
Write a note (max 255 characters)
Cancel
Update Note

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY