Uncaught TypeError: Cannot read property 'length' of null

[Seokjoon]

Hi,
I am using Telerik, but these days, the application that I am working on doesn't work on mobile especially iPhones.
It works fine with any other desktop version of web browsers. Safari for Desktop works fine.

The problem is that, there is one dropdown menu and it is a javascript code. When I access with my iPhone, and tried to
click the dropdown arrow, it does not take my input (touch). 
When I tried to debug it, it says that there is

 "Uncaught TypeError: Cannot read property 'length' of null
Telerik.Web.UI.RadAjaxManager._applyUpdatePanelRenderMode
Telerik.Web.UI.RadAjaxManager.set_updatePanelsRenderMode
Sys$Component$_setProperties
Sys.Component.create
(anonymous function)
(anonymous function)
Sys._Application._doInitialize
(anonymous function)

Did anyone have the same problem or does anyone have ideas to solve problem?
I really need your help to fix this issue.

Thank you and have a great day!

[Maria Ilieva]

Hello Seokjoon,

We have reports for similar issue in the Mobile Safari and it seems that the sites which are experiencing it are using ASP.NET 3.5. A fix is required for the browser definition files with the latest Safari release.

You can see this stackoverflow thread and test the provided suggestions. I hope this tip would help you solve the issue faced.


Regards,
Maria Ilieva
Telerik

 

 

[muhamed]

Uncaught TypeError: Cannot read property 'length' of null
    at Telerik.Web.UI.RadAjaxManager.updateHeadStyles (ScriptResource.axd:303)
    at Telerik.Web.UI.RadAjaxManager.set_styles (ScriptResource.axd:102)
    at Function.Component$_setProperties [as _setProperties] (ScriptResource.axd:4574)
    at Component$create (ScriptResource.axd:4628)
    at <anonymous>:2:5
    at _Application$add_init [as add_init] (ScriptResource.axd:5692)
    at <anonymous>:1:17
    at _ScriptLoader$_loadScriptsInternal [as _loadScriptsInternal] (ScriptResource.axd:448)
    at _ScriptLoader$_loadScriptsInternal [as _loadScriptsInternal] (ScriptResource.axd:453)
    at _ScriptLoader$_loadScriptsInternal [as _loadScriptsInternal] (ScriptResource.axd:453)

 

any kind of help highly appreciated