jQuery在JSON中工作[重复]

I want to send data from index.php to the browser through AJAX. I want to encode it in JSON and to decode it to work on it. I am using jQuery.ajax(). Can you point me to a tutorial?

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Assuming your ajax call looks something like this

$.ajax({
   ....
   .....
   dataType: 'json', // required
   success: function(data) { // data variable is where your json is stored
       console.log(data); // view entire json object in firebug or other console
       alert(data.name); // access value of array key called name 
   }

});

I recommend placing a console.log call in the success function to see what the json object looks like.

In your index.php put this jquery code

$.post("data_provider.php",{'your_param': param_value},
     function(data){

     var jsonObj = JSON.parse(data);

      //use your data here 
     jsonObj.id;
     jsonObj.name; 

});

In your data_provider.php, get your data from DB for example and encode them using json_encode function. For example :

$your_data = array('id' => $id, 'name' => $name );

echo json_encode ($your_data);

In ajax call you can use get or post according to your needs.