Jquery AJAX - JSON or TEXT

Hi Developers,

I'm trying to retrieve the TEXT from the getsku javascript after submitting but not sure how to really do it.

1) How do i retrieve the POST data?

2) How do i retrieve and post it back , if i have multiple varaible to pass back (Datatype:text)

3) When should i use JSON, and when text.

4) If i'm using JSON how do i read it(after javascript) and display it(returned data to javascript).

javascript in main page

function getsku(){

$.ajax({

type: "POST",

url: "funcAjax.php",

data: { 'ddl1': $("#drop_1").val(), 'ddl2': $("#tier_two").val() },

dataType: 'text',

success: function(data) {

$("#sku").val(data);

complete: function() {

alert('Complete: Do something.');

error: function() {

alert('Error: Do something.');

}

});

}

Button

<input type="button" value="Get SKU" onclick="getsku();" >

Trying to retrieve from another php and return a data to the above php(Having Issues here)

if(isset($_REQUEST['ddl1'])) {

echo "FOUND1";

}else{

echo "FOUND2";

}

Thanks in advance for any recommendations or solutions.

1 Answers

AVADHESH PATEL 20 Jun 2013

Always return JSON from your PHP. Then you can include as many variables as you need in your response, and an error code as well if appropriate - like this:

{"error":"0","result1":"result 1 data","result2":"result 2 data"}

Then your success function can become:

if (data.error != 0) {

// An error occurred on server: do something

$("#sku").val(data.result1);

// do something with data.result2

Your PHP would become something like this:

echo json_encode(array("error"=>0, "result1"=>"FOUND1"));

json_encode(array("error"=>1, "result1"=>"NotFOUND"));

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