Difference between document.onclick() and click() function

There is no onclick event in jquery but there is .on eventinterviewer asks sometime

.click(handler):  Bind an event handler to the “click” JavaScript event, or trigger that event on an element.

.on( events [, selector ] [, data ], handler ) : Attach an event handler function for one or more events to the selected element. they can process events from descendant elements that are added to the document at a later time.

So if you are adding an element on page dynamically and want to fire an event use .on .

Temp table in SQL Server(#temp,##temp,@table)

Temporary tables are useful when we want a manipulated data in tabular form at run time in query processing. A temporary table is visible to the session in which they were created and are automatically dropped when that session logs off.

Type of temp table

1) Local temp table: Syntax (create table #t).

If a temp table exist in a stored procedure it is automatically dropped when SP ends, i.e. temp table exist in current scope and current connection.

2) Global temp table: Syntax (create table ##t).

Global temp table can be accessed in any session in current connection and can be dropped in any session.

3) Temp variable: Syntax (create table @t)

A temp variable has all features of temp table but

It can’t be dropped manually,they are dropped automatically.

We can use a temp variable in user defined function but can’t do with temp table.

Extension Methods in C#

With help of extension method you can add a new method to an existing type without recompile and modifying existing type.

e.g.

string s = “hello”; string i = s.UpperCasefirstLater();

Result : Hello

Here UpperCasefirstLater is a extension method. see below code
public static class MyExtensions
{
public static string UpperCasefirstLater(this String str)
{
if (str.Length > 0)
{
char[] array = str.ToCharArray();
array[0] = char.ToUpper(array[0]);
return new string(array);
}
}
}