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how to stop browser back button using javascript
I am doing an online quiz app in php. I want to restrict the user from going back in an exam.
I have tried the following script but it stops my timer.
What should I do?
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Popup弹出菜单扩展 · App Inventor 2 中文网
...e.ullisroboterseite.ursai2popup.aix
示例应用: PopupExample.aia
dropdown_ursai2popup.aia
开发动机
MIT App Inventor包含从列表中选择组件，例如ListView组件。不幸的是，它总是填满整个屏幕，而且配置视图的选项很少。这里介绍...
How to dynamically create generic C# object using reflection? [duplicate]
...Activator.CreateInstance(makeme);
Per your edit: For that case, you can do this ...
var d1 = Type.GetType("GenericTest.TaskA`1"); // GenericTest was my namespace, add yours
Type[] typeArgs = { typeof(Item) };
var makeme = d1.MakeGenericType(typeArgs);
object o = Activator.CreateInstance(makeme);...
Why do Twitter Bootstrap tables always have 100% width?
...n the bootstrap stretch according to their container, which you can easily do by placing your table inside a .span* grid element of your choice. If you wish to remove this property you can create your own table class and simply add it to the table you want to expand with the content within:
.table-...
Why use getters and setters/accessors?
..., promoting public data. Notification of other objects can just as well be done from real methods providing a significant abstraction on a mere data container with (more or less) public data fields. Instead of plane.turnTo(dir); plane.setSpeed(spd); plane.setTargetAltitude(alt); plane.getBreaks().re...
What Java ORM do you prefer, and why? [closed]
... over time, the database itself is probably going to last longer.
Yes, you do have stored procedures and user defined types (UDT's) in your legacy database. Your database-tool should support that.
There are many other good ORM's. Especially Hibernate or iBATIS have a great community. But if you're...
Pimpl idiom vs Pure virtual class interface
...dentity is important. Always passed by reference, never by "value". Often, doesn't make sense to "copy" instances of the class at all. When it does make sense, a polymorphic "Clone" method is usually more appropriate. Examples: A Socket class, a Database class, a "policy" class, anything that woul...
How to Unit test with different settings in Django?
...ince Django 1.4, there are ways to override settings during tests:
https://docs.djangoproject.com/en/dev/topics/testing/tools/#overriding-settings
TestCase will have a self.settings context manager, and there will also be an @override_settings decorator that can be applied to either a test method o...
How do you print in Sublime Text 2
...ke a great editor. I just started using it a week ago in eval mode and it doesn't seem to have any printing functionality. This seems preposterous to me, but I can't find it anywhere.
...
What .NET collection provides the fastest search
...? In otherwords, is the default Contains() method just scan each item or does it use a better search algorithm.
8 Answers...