Creating JSON in javascript

问题:

How should I encode this data as JSON in javascript?

I use javascript to get an arbitrary number of 'tags' on photos. Each tag has a firstname and a lastname in this form:

firstname = 'john';
lastname  = 'doe';

firstname = 'jane';
lastname  = 'smith';

I want to encode this data as JSON, send it to my server with Ajax, and decode it in PHP.

My thought was to create a multidimensional array. Is there a better way to do this?

The output of JSON.stringify() is [{\"firstname\":\"John\",\"lastname\":\"Doe\"},{\"firstname\":\"Jane\",\"lastname\":\"Smith\"}]. How can I have JSON.stringify() not escape all of the quotes?

回答1:

JSON is inspired by JavaScript's object syntax, so all you need to do is create an array of objects:

var data = [
  {
    firstname: 'john',
    lastname: 'doe'
  },
  {
    firstname: 'jane',
    lastname: 'smith'
  }
]

var json = JSON.stringify( data ); // send this object to server

回答2:

JSON is the way to go

JAVASCRIPT

 var data = [{
    firstname: 'john',
    lastname: 'doe'
    },
    {
    firstname: 'jane',
    lastname: 'smith'
   }
 ]

var json = JSON.stringify( data ); 

Now your JSON string will be

[{"firstname":"John","lastname":"Doe"},{"firstname":"Jane","lastname":"Smith"}]

PHP

$arr=json_decode('$jsonVar');

Make sure you put the single quotes cover on the php side. Otherwise PHP won't read this as a string

回答3:

you can convert your tags into json object

var jsonObj = '{"TeamList" : [{"teamid" : "1","teamname" : "Barcelona"}]}';
var obj = $.parseJSON(jsonObj);

or

 var jsonObj = {
"employees": [
{ "firstName":"John" , "lastName":"Doe" }, 
{ "firstName":"Anna" , "lastName":"Smith" }, 
{ "firstName":"Peter" , "lastName":"Jones" }
]
}
var obj = $.parseJSON(jsonObj);