The :first selector in jQuery is used to select the first DOM element.SyntaxThe syntax is as follows −$(":first")ExampleLet us now see an example to implement the :first() selector −    .demo {       background-color: red;       color: white;       font-size: 16px; ... Read More

The Convert.ToBase64CharArray() method in C# is used to convert a subset of an 8-bit unsigned integer array to an equivalent subset of a Unicode character array encoded with base-64 digits.SyntaxFollowing is the syntax −public static int ToBase64CharArray (byte[] arr, int offsetIn, int length, char[] outArray, int offsetOut);Here, arr − An ... Read More

For this, you can use MySQL row_number(). Let us first create a table −mysql> create table DemoTable1342    -> (    -> Score int    -> ); Query OK, 0 rows affected (0.68 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1342 values(80); Query OK, 1 ... Read More

The :file selector in jQuery is used to select all input elements with type=”file”.SyntaxThe syntax is as follows −$(":file")ExampleLet us now see an example to implement the :file() selector −    .demo {       background-color: blue;       color: white;       font-size: ... Read More

The Convert.FromBase64String(String) method in C# converts the specified string, which encodes binary data as base-64 digits, to an equivalent 8-bit unsigned integer array.SyntaxFollowing is the syntax −public static byte[] FromBase64String (string str);Above, the parameter str is the string to convert.ExampleLet us now see an example to implement the Convert.FromBase64String(String) method ... Read More

To fetch the substring after last dot, use substring_index(). Let us first create a table −mysql> create table DemoTable1341    -> (    -> Value varchar(60)    -> ); Query OK, 0 rows affected (0.75 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1341 values('John.123.@gmail.com' ); ... Read More

The :even selector in jQuery is used to select even elements i.e. with even index number.Note − The :even selector deprecated in jQuery 3.4SyntaxThe syntax is as follows −$(":even")ExampleLet us now see an example to implement the :even() selector −    .one {       background-color: ... Read More

The CharEnumerator.ToString() method in C# gets a string that represents the current object.SyntaxFollowing is the syntax -public virtual string ToString();ExampleLet us now see an example to implement the CharEnumerator.ToString() method −using System; public class Demo {    public static void Main(){       string strNum = "This is it!"; ... Read More

Let us first create a table −mysql> create table DemoTable1340    -> (    -> Deadline date    -> ); Query OK, 0 rows affected (0.43 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1340 values('2019-09-18'); Query OK, 1 row affected (0.52 sec) mysql> insert into ... Read More

The :enabled selector in jQuery is used to select all enabled input elements.SyntaxThe syntax is as follows −$(":enabled")ExampleLet us now see an example to implement the :enabled() selector −    .one {       background-color: orange;       font-size: 16px;       border: 2px ... Read More