Adding Line Breaks into Text Area using JavaScript

Posted by Prince | 5:48:00 PM | , | 1 comments »

Textarea - output not showing linebreaks:
        Whitespace in HTML output, including many white-space characters in a row,is displayed in HTML pages as a single  ordinary space. And a line break also considered as whitespace.
If you want to display text that includes linebreaks in HTML so that the linebreaks show, you can do the following ways
  •  Put the text in between <pre> and </pre> tags.
  • (Use your server/client side language to convert the line breaks into <br /> tags.

For example,
Adding Line Breaks into Text Area using JavaScript:

var strAddress= document.forms[0].txt.value;
text = strAddress.replace(/\n\r?/g, '<br />');

Adding Line Breaks into Text Area using PHP:

$strAddress = str_replace("<br>", "\n", $strAddress);
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Password strength with JavaScript

Posted by Prince | 7:48:00 PM | | 0 comments »

Check Password Strength with JavaScript and Regular Expressions:
This post is  good example of a Password Strength checker that uses JavaScript and Regular Expressions. It check the following conditions to create secure password.
  • The password must contains greater than 6 character
  • The password must have both lower and uppercase characters
  • The password must have at least one number
  • The password must have at least one special character
   PasswordStrength.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  
    <title>Dotnetcluster-Password strength checker</title>
<!-- http://dotnetcluster.blogspot.in -->
    <script language="javascript" type="text/javascript">
 
function pwdStrength(password)
{
        var desc = new Array();
        desc[0] = "Very Weak";
        desc[1] = "Weak";
        desc[2] = "Better";
        desc[3] = "Medium";
        desc[4] = "Strong";
        desc[5] = "Strongest";
        var score   = 0;
        //if password bigger than 6 give 1 point
        if (password.length > 6) score++;
        //if password has both lower and uppercase characters give 1 point      
        if ( ( password.match(/[a-z]/) ) && ( password.match(/[A-Z]/) ) ) score++;
        //if password has at least one number give 1 point
        if (password.match(/\d+/)) score++;
        //if password has at least one special caracther give 1 point
        if ( password.match(/.[!,@,#,$,%,^,&,*,?,_,~,-,(,)]/) ) score++;
        //if password bigger than 12 give another 1 point
        if (password.length > 12) score++;
         document.getElementById("pwdDescription").innerHTML = desc[score];
         document.getElementById("pwdStrength").className = "strength" + score;
}
  
    </script>
</head>
<body>
    <table>
        <tr>
            <td>
          
                    Password<input type="password" name="pass" id="pass" onkeyup="pwdStrength(this.value)" />
            </td>
            <td>
                <div id="pwdDescription" style="color: red"">
                    <b>Password</b>
                </div>
            </td>
        </tr>
       
    </table>
</body>
</html>
 Demo for check password strength:
Password
Password
That's all. If this post is useful for you , please share this to your friends. Thanks!
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Auto Tab using JavaScript

Posted by Prince | 7:24:00 PM | | 0 comments »

Auto Tab Form Fields using JavaScript:
                   This a simple sample code for auto tab form fields using javascript.  It works in conjunction with the "maxlength" attribute of HTML, triggered whenever the user's input reaches the maxlength's value.
Code:

<script type="text/javascript">
/*
Auto tabbing script http://dotnetcluster.blogspot.in/
*/
function autoTab(current,next){
if (current.getAttribute&&current.value.length==current.getAttribute("maxlength"))
next.focus()
}

</script>

<b>Enter your input:</b>
<form name="fromAutoTab">
<input type="text" name="first" size="4" onkeyup="autoTab(this, document.fromAutoTab.second)"
    maxlength="3" />
<input type="text" name="second" size="4" onkeyup="autoTab(this, document.fromAutoTab.third)"
    maxlength="3" />
<input type="text" name="third" size="5" maxlength="4" />
</form>
  Try this demo:
  Enter your input:

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How to check username availability using asp.net (c#)

Posted by Prince | 5:37:00 PM | , | 1 comments »

Check username availability using ajax style in ASP.NET:
                                                Here I'm checking the username availability  with SQL Server 2005. Here you can download  a sample project that explained to check username availability.In this sample I'm checking username using sql server at the onClick event. And also i'm used three images to represent the status of the user name (In-Progress, UserName Already Exists and UserName Available) see the below images. A please wait progress bar running after click the Check Availability button



If the given user name(vasanth) already exists in the database I've displayed the "UserName Already Exists" image.


The given user name(vasanth) already exists in the database, so we have check with some other username (here dotnetcluster). If the given user name(  dotnetcluster ) not exists in the database I've displayed the "UserName Available" image.


 You can download full code for check username availability using asp.net (c#) here. Just download and create  a virtual directory.(Before, you have create a database by using UserAvailability_SQL.txt)
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Login failed for user 'sa' sql server 2005 :(Microsoft SQL Server error: 18456)

Posted by Prince | 7:08:00 PM | , | 0 comments »

Login failed for user ‘sa’. The user is not associated with a trusted SQL Server connection.(Microsoft SQL Server error: 18456):
                        Normally if the  SQL Server is not set to use both SQL Server and Windows Authentication Mode, this error will occurred. To fix this issue you have to change the Authentication Mode of the SQL server from “Windows Authentication Mode (Windows Authentication)” to “Mixed Mode (Windows Authentication and SQL Server Authentication)”.




Solution:

  1.      Go to Start > Programs > Microsoft SQL Server 2005 > SQL Server Management Studio.
  2.      Right-click the Server name. Select Properties > Security.
  3.      Under Server Authentication, select SQL Server and Windows Authentication Mode   (refer the   screenshot below)
  4.     The server must be stopped and re-started before this will take effect.
                                 
            
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Getting Last inserted Identity value in SQL server - ASP.NET

Posted by Prince | 7:39:00 PM | , , | 0 comments »

Getting the Identity of the last Inserted row - ASP.net/C#:

                                    The key to @@Identity is that it returns the value of an autoincrement column that is generated on the same connection.
           The Connection object used for the Insert query must be re-used without closing it and opening it up again. Access doesn't support batch statements, so each must be run separately. It is also therefore possible, though not necessary, to create a new Command object to run the Select @@Identity query. The following code shows this in action where the Connection object is opened, then the first query is executed against cmd using ExecuteNonQuery() to perfom the Insert, followed by changing the CommandText property of cmd to "Select @@Identity" and running that.
Code:

protected void btnSave_Click(object sender, EventArgs e)
    {
        string strConnection = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
        SqlConnection sqlConn = default(SqlConnection);
        SqlCommand sqlCmd = default(SqlCommand);
        try
        {
            string query2 = "Select @@Identity";
            sqlConn = new SqlConnection(strConnection);
            sqlCmd = new SqlCommand("INSERT into student (firstname, lastname, street, city, state) VALUES ('" + txtFirstname.Text + "', '" + txtLastname.Text + "', '" + txtStreet.Text + "','" + txtCity.Text + "','" + txtState.Text + "')", sqlConn);
            sqlConn.Open();
            sqlCmd.ExecuteNonQuery();
            sqlCmd.CommandText = query2;
            int idx = Convert.ToInt32(sqlCmd.ExecuteScalar());
            if (idx != 0)
            {
                Response.Write("<script>alert('Successfully saved')</script>");
            }
            else
                Response.Write("<script>alert('Not saved')</script>");
        }
        catch (Exception ex)
        {
            Response.Write(ex.ToString() + "<br>");
        }
        finally
        {
            sqlConn.Close();
        }
    }
Please share this post if it's useful to you. Thanks!.
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