After dropdownlist postback inside update panel , My button which is outside update panel wont work

Question

User1742515686 posted

my dropdownlist is inside update panel, when i change the dropdownlist selection , my log out button won't wrk:

You can see that there's no error in console, but as soon as button is clicked after dropdownlist selection change , error begins. If i won't hange the selection and click on button then it log outs sucessfully.

NOTE :

I am using latest version of AJAX Control Toolkit using Nuget Package manager , my ASP.Net version is 4.0 , I tried to remove js from my master page and content page but still error happens on this specific page only.

Answer 1

User2103319870 posted

Try adding the below javascript function to your page

Function.prototype.startsWith = function (str) {
    return false;
}

Check this link for more details

Answer 2

User1742515686 posted

This solved my issue :

HTMLInputElement.prototype.startsWith = function () { return false; };

Taken from http://blog.outsharked.com/2011/03/fix-for-error-in-function.html