javascript - How to alert ajax response - Stack Overflow

admin管理员组

文章数量:1340894

I've read dozens of related posts, but I still can't get this to work.

I want to alert the response in jquery I get from PHP.

PHP:

$msg=array();

    if(empty($whatever)){
        $msg['cenas']="Não há contas";
    }else{
        $msg['cenas']="Há contas";
    };

    echo json_encode($msg);

JS:

$.ajax({
    url: 'myscript.php',
    dataType: 'json',
    success: function(response){
       alert(response.cenas);
    }
});

PHP is echoing

{cenas: "Há contas}" But I can't get it to alert in JS.

I've read dozens of related posts, but I still can't get this to work.

I want to alert the response in jquery I get from PHP.

PHP:

$msg=array();

    if(empty($whatever)){
        $msg['cenas']="Não há contas";
    }else{
        $msg['cenas']="Há contas";
    };

    echo json_encode($msg);

JS:

$.ajax({
    url: 'myscript.php',
    dataType: 'json',
    success: function(response){
       alert(response.cenas);
    }
});

PHP is echoing

{cenas: "Há contas}" But I can't get it to alert in JS.

• javascript
• php
• jquery
• ajax

Share Improve this question Follow edited Feb 7, 2014 at 22:39 asked Feb 7, 2014 at 22:22 user882670user882670 3

• 3 using firebug or chrome developer tools log the alert instead as console.log(response). That will reveal your entire object response and should let you see what's wrong. – Harvey A. Ramer Commented Feb 7, 2014 at 22:25
• @HarveyA.Ramer console.log(response) returns "success" – user882670 Commented Feb 7, 2014 at 22:44
• 1 That means, I believe, that you are just returning a string from your myscript.php file on success. In that case, you'll need to modify it to return an object to do what you're trying to do. This might be instructive: stackoverflow./questions/8649621/… – Harvey A. Ramer Commented Feb 8, 2014 at 3:08

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 4

The php should echo back {"cenas": "Há contas"}, but what did you get in the alert? Did you get an undefined? If so, try to use jQuery.parseJSON before alert. e.g:

$.ajax({
    url:"myscript.php",
    dataType: "json",
    success:function(data){
       var obj = jQuery.parseJSON(data);
       alert(obj.cenas);
    }
});

You should tell jQuery to expect (and parse) JSON in the response (although jQuery could guess this correctly...) and you should write your javascript correctly:

$.ajax({
    url: 'myscript.php',
    dataType: 'json',
    success: function(response){
       alert(response.cenas);
    }
});

Try

$.ajax({
    url:"myscript.php",
    dataType: "json",
    success:function(data){
       alert(data.cenas);
    }
});

You have a syntax error.

Check out the Docs for $.ajax

本文标签： javascriptHow to alert ajax responseStack Overflow