Working with JSON Input String using JavaScript.

If you are working with Restful API’s and you just need to send a JSON input response via web project, especially for Node projects. This post helps you to create a JSON input string using JavaScript. It's very useful, converting Data objects to JSON data format implemented with $.toJSON Jquery plugin.

JavaScript

Contains javascipt code. $("#form").submit(function(){}- delete_button is the ID name of form tag. Using element.val() calling form text input values.

<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="jquery.json-2.2.js"></script>
<script src="GetPostAjax.js"></script>
<script type="text/javascript">
$(document).ready(function()
{
$("#form").submit(function(e){
e.preventDefault();
var username,email,password,gender;
username=$("#username").val();
email=$("#email").val();
password=$("#username").val();
gender=$("#gender").val();

if(username.length>0 && email.length>0 && password.length>0 && gender.length>0)
{
//Creating Objects
var request = new Object();
var userDetails = new Object();
var user = new Object();
var websites=new Array();

user.name=username;
user.email=email;
user.password=password;
user.gender=gender;

//Array Push
if(website1.length>0)
websites.push(website1); 
if(website2.length>0)
websites.push(website2);
if(website3.length>0)
websites.push(website3);

user.websites=websites;

userDetails.user = user;
request.userDetails = userDetails;

var jsonfy = $.toJSON(request);
// Encodes special characters 
var encodedata = 'jsondata='+encodeURIComponent(jsonfy);

//Ajax Call
var url='website API URL';
post_data(url,encodedata, function(data) {
alert("Success");
});

}

});

});
</script">

HTML Code

<form method='post' action='' id='form'>
Name
<input type='text' name='username' id='username' />
Email
<input type='text' name='email' id='email' />
Password
<input type='text' name='password' id='password' />
Gender
<select name='gender' id='gender'><option value='male'>Male</option><option value='female'>Female</option></select>
Websites
<input type='text' id='website1' />
<input type='text' id='website2' />
<input type='text' id='website3' />
<input type='submit' id='submit'/>
</form>

JSON Output

{
"userDetails":{
"user":{
"name":"Sumit Chourasia",
"email":"sumitchourasia91@gmail.com",
"password":"mypassword",
"gender":"male",
"websites":["www.askgif.com","www.googlebytes.com","www.querygif.com"]
}
}
}

JSON Encoded

Encodes special characters. it encodes the following characters: , / ? : @ & = + $ #

jsondata=%7B%22userDetails%22%3A%7B%22user%22%3A%7B%22name%22%3A%22Sumit%20Chourasia%22%2C%22email%22%3A%22Sumit%409askgif.com%22%2C%22password%22%3A%22Sumit%20Chourasia%22%2C%22gender%22%3A%22male%22%2C%22websites%22%3A%5B%22www.askgif.com%22%2C%22www.googlebytes.com%22%2C%22www.querygif.com%22%5D%7D%7D%7D

GetPostAjax.js

Jquery ajax method.

function post_data(url,encodedata, success){
$.ajax({
type:"POST",
url:url,
data :encodedata,
dataType:"json",
restful:true,
contentType: 'application/json',
cache:false,
timeout:20000,
async:true,
beforeSend :function(data) { },
success:function(data){
success.call(this, data);
},
error:function(data){
alert("Error In Connecting");
}
});
}