CODEWITHSUNDEEP
phpjqueryajax
user1638121
user1638121

Reputation: 167

How to get the returned value in jQuery .post()

How can I get the returned value?

On click my button invokes:

$("#generateNumber").click(function(){
   $.post( "./result.php", function( data ) {
      console.log( data );
      $(".generate_number").html(data);
   });
});

my result.php:

<?php 
   $a = "returnedValue";
?>

but my console log doesn't show me my returnedValue. Why not?

Upvotes: 1

Views: 119

Answers (1)

Sam
Sam

Reputation: 20486

You need to dump the value in result.php:

<?php
    $a = "returnedValue";
    echo $a;
?>

The data parameter in the callback you use in jQuery.post() contains the output of result.php. Your PHP script wasn't outputting anything, though. Make sure you dump any data you want the AJAX call to read.

If you want to call a specific function in your PHP script, you'll probably need to pass some parameters to jQuery.post()..a simple example:

$("#generateNumber").click(function(){
    $.post("./result.php", {
        functionName: 'foo'
    }, function( data ) {
        console.log( data );
        // foo
    });
});

And in result.php:

<?php
    function foo() { return "foo"; }
    function bar() { return "bar"; }

    switch($_POST['functionName']) {
        case 'foo': echo foo(); break;
        case 'bar': echo bar(); break;
    }
?>

Upvotes: 3

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