IE7 Ajax out of memory error

Question

The script I am working on makes ajax call and it works fine on Firefox, chrome and IE8+. But on IE7, I am getting an out of memory error. The memory gets up to 120MB. I am using jQuery 1.8.3. The error also happens in jQuery 1.9 and 1.7.

the source:

$.ajax({
    type: "POST",
    contentType: "application/json; charset=utf-8",
    url: 'data.asmx/GetChildren',
    data: '{parent:"program","child":"office","id":' + this.Item_id + '}',
    dataType: 'json',
    success: function (r) {
        var data = r.d.data;
    }
});

this is the profile i get for IE7:

edit: updated with source edit: finally had time to go through the problem again. turned out to be a simple looping problem. not jQuery ajax's fault.

This error is pretty self explanatory. IE7 runs out of memory. How big is data? — msarchet, Mar 08 '13 at 15:33
not really, i found out it only takes one ajax call in ie 7 to get the out of memory error — Funky Dude, Mar 08 '13 at 16:01
Post more code, like the function that `$.ajax` is nested in. I doubt it's the causer. Something is missing — kidwon, Mar 08 '13 at 16:02
Does the `success` function run on any browser? If so, could you post the response data? — Anderson Pimentel, Mar 08 '13 at 16:08
might be an issue with deserializing the json. You may try replacing the ajax call with a script that just deserializes the corresponding json string and see if the problem still occurs — jbl, Mar 08 '13 at 22:11
I doubt it's related, but you can use an actual object literal for the `data` property instead of the string. — Shmiddty, Mar 19 '13 at 21:08
Could be IE7 bug. Does MS most recent patch fix it: https://technet.microsoft.com/en-us/security/bulletin/ms13-021 — Lizz, Mar 20 '13 at 07:19
finally had time to go through the problem again. turned out to be a simple looping problem. not jQuery ajax's fault. — Funky Dude, Mar 22 '13 at 17:58

score 1 · Answer 1 · answered Mar 20 '13 at 12:44

IF number of children are more, then the value returned to the var data will be more.

The maximum length of JSON strings. The default is 2097152 characters, which is equivalent to 4 MB of Unicode string data. source Microsoft

So size is not an issue, but the character if exceeds then it is a problem. :)

Anderson Pimentel · Answer 2 · 2013-03-08T15:44:40.137

Don't know if it has something to do with your problem, but there are two things making your data an invalid JSON.

parent must be enclosed in quotation marks, just as the id value (you are only closing and reopening the string).

So, it should be like this:

$.ajax({
        type: "POST",
        contentType: "application/json; charset=utf-8",
        url: 'data.asmx/GetChildren',
        data: '{"parent":"program","child":"office","id":"' + this.Item_id + '"}',
        dataType: 'json',
        success: function (r) {
            var data = r.d.data;
        }
});

score 0 · Answer 3 · answered Mar 15 '13 at 09:24

0

This problem can occur if virtual memory has been disabled.
To enable virtual memory, follow these steps:

Click the Start button, point to Settings, and then click Control Panel. Double-click the System icon. On the Performance tab, click Virtual Memory. Click the "Let Windows manage my virtual memory settings (recommended)" option. Or, if you must use your own virtual memory settings, allow as much space as possible for the maximum size. Click OK.

answered Mar 15 '13 at 09:24

Sanjeev Rai

6,721
4
23
33

1

i don't think this is it. this seems like a jQuery + IE 7 bug. I can't tell my users to enable virtual memory. – Funky Dude Mar 15 '13 at 16:32

nicholasnet · Answer 4 · 2013-03-15T16:47:39.460

0

As per jQuery docs you can pass plain object so I would suggest to use object instead. Also can you please try to use Id like this and see if it makes any difference.

var id = this.Item_id; //
$.ajax
({
    type: "POST",
    url: 'data.asmx/GetChildren',
    data: {"parent":"program","child":"office","id": id},
    dataType: 'json',
    success: function (r) 
    {
        //Please use console.log(r) and see what is coming back here
    }
});

or simply

var id = this.Item_id; //
$.post("data.asmx/GetChildren", 
{
    "parent":"program",
    "child":"office",
    "id": id
}, function(r)
{
    //console.log(r);
},"json");

edited Mar 15 '13 at 16:47

answered Mar 15 '13 at 16:34

nicholasnet

2,117
2
24
46

IE7 does not support console.log function – inser Mar 18 '13 at 11:50
I am aware that IE7 does not have console.log but please try this in Firefox or something just to check what's coming back from the server. – nicholasnet Mar 18 '13 at 14:56

score 0 · Answer 5 · answered Mar 15 '13 at 21:48

0

Have you try to send a JSON.stringify instead of an Object, and in the server side decode?

https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/JSON/stringify

answered Mar 15 '13 at 21:48

ncubica

8,169
9
54
72

2

IE7 doesn't have native JSON support. You'll need to use JSON.js - https://github.com/douglascrockford/JSON-js – Alex Ghiculescu Mar 19 '13 at 11:54
you can add the fix in IE7 and will work... http://stackoverflow.com/questions/2503175/json-on-ie6-ie7 – ncubica Mar 19 '13 at 14:46

score 0 · Answer 6 · answered Mar 20 '13 at 13:58

$.ajax({
    type: "POST",
    contentType: "application/json; charset=utf-8",
    url: 'data.asmx/GetChildren',
    data: '{parent:"program","child":"office","id":' + this.Item_id + '}',
    dataType: 'text',
    success: function (r) {
        var data = (eval("[" + r + "]")[0]).d.data;
    }
});

Changed dataType to "text".
Used eval("[" + textJson + "]")[0] to get the object data.
- If it still fails replace the "var data = ..." line with "var data = r;" and report if that fails also.

IE7 Ajax out of memory error

6 Answers6