Return Javascript Variable in Ajax Response

Question

HOW TO USE eval() FUNCTION HERE
ajax.js

 var x="hello world";
 var y="anyother string";
    $.ajax({
        url:"ajax.php",
        success:function(data){
            console.log($.globalEval(data));
        }
    });

ajax.php

<?php exit("'first string is '+x+' second one is'+y");?>

I want to return x,y as a variables to ajax response, so console.log(data) can print value of

first string is hello world second one is another string

but it says "x is undefine"

why don't you directly access "x" variable in ajax response? like console.log(x);
here in my case, data is a long HTML string with a lot of variable which values are in javascript.

Pudge601 · Answer 1 · 2013-06-07 10:50:57Z

Are you trying to create an echo script, whereby you send a variable via AJAX to your PHP script, and your PHP script returns that value back?

If so, you need to provide x in the data setting for your AJAX request, as so;

var x="helloworld";
$.ajax({
    url:"ajax.php",
    data: {
        x: x
    }
    success:function(data){
        console.log(data);
    }
});

And then in your PHP script, you need to retrieve the value from the POST array, and output it as the response:

<?php
exit($_POST['x']);

EDIT

To include a second variable (y)

var x="helloworld",
    y="another string";
$.ajax({
    url:"ajax.php",
    data: {
        x: x,
        y: y
    }
    success:function(data){
        console.log(data);
    }
});

and in PHP;

<?php
$x = $_POST['x'];
$y = $_POST['y'];
exit("First string is $x, second string is $y");

I would strongly recommend finding some tutorials on JavaScript and PHP basics to get an understanding of some of these concepts

I think, from what I've shown you, you can at least try to figure out how to add a second variable. I'm not your code monkey.
i know but i can't pass variable like that. It some thing use of eval function
You don't need to use eval to achieve this. Can you update your question to include your attempt at solving this for 2 variables?
i am using $.globalEval(data) but it through error "x is undefine"

Joe · Answer 2 · 2013-06-07 10:37:57Z

up vote -1 down vote

ajax.js:

  $.ajax({
        method: "post",
        url:"ajax.php",
        data: {x: "helloworld", y:"another string"},
        success:function(data){
            console.log(data);
        }
    });

ajax.php:

echo "First string: ".$_POST['x'].", second string: ".$_POST["y"];

edited Jun 7 at 10:37

Joe
2,870420

answered Jun 7 at 10:22

Ziarno
1,166213

i have modified my question, please review – Wasim Jun 7 at 10:28

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Return Javascript Variable in Ajax Response

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