Monday, 29 October 2012


How to: Join Multiple Strings (C# Programming Guide)


string two = "karan";
string str = "chanana " + karan + "k";
System.Console.WriteLine(str);

The following code uses the Append method of the StringBuilder class to join three strings without the chaining effect of the + operator.

class StringBuilderTest
{
    static void Main()
    {
        string karan = "karan";

        System.Text.StringBuilder sb = new System.Text.StringBuilder();
        sb.Append("chanana ");
        sb.Append(karan);
        sb.Append(" k");
        System.Console.WriteLine(sb.ToString());

        string str = sb.ToString();
        System.Console.WriteLine(str);
    }
}



Tag , karan chanana , c , c++ , karan
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Wednesday, 17 October 2012

calendar.html by karan chanana



                                                                                               calendar

<head>
   <title>Java Script Calender Date Picker</title>
   <meta http-equiv="Content-Type" content="text/html;">
   <script language="javaScript"
    type="text/javascript" src="calendar.js"></script>
   <link href="calendar.css" rel="stylesheet" type="text/css">
</head>
<body bgcolor="#666666">
    <form>
      <input type="text" name="datum1"><a href="#"
       onClick="setYears(1947, 2008);
       showCalender(this, 'datum1');">
      <img src="calender.png"></a>
    </form>
    <!-- Calender Script  -->
    <table id="calenderTable">
       <tbody id="calenderTableHead">
         <tr>
           <td colspan="4" align="center">
             <select onChange="showCalenderBody(
                   createCalender(document.getElementById('selectYear').value,
                   this.selectedIndex, false));"
                   id="selectMonth">
                      <option value="0">Jan</option>
                      <option value="1">Feb</option>
                      <option value="2">Mar</option>
                      <option value="3">Apr</option>
                      <option value="4">May</option>
                      <option value="5">Jun</option>
                      <option value="6">Jul</option>
                      <option value="7">Aug</option>
                      <option value="8">Sep</option>
                      <option value="9">Oct</option>
                      <option value="10">Nov</option>
                      <option value="11">Dec</option>
                  </select>
            </td>
            <td colspan="2" align="center">
            <select onChange="showCalenderBody(createCalender(this.value,
              document.getElementById('selectMonth').selectedIndex, false));"
              id="selectYear">
            </select>
                       </td>
           <td align="center">
            <a href="#" onClick="closeCalender();">
              <font color="#003333" size="+1">X</font>
            </a>
           </td>
        </tr>
       </tbody>
       <tbody id="calenderTableDays">
         <tr style="">
           <td>Sun</td><td>Mon</td><td>Tue</td><td>Wed</td>
           <td>Thu</td><td>Fri</td><td>Sat</td>
         </tr>
       </tbody>
       <tbody id="calender"></tbody>
    </table>
<!-- End Calender Script  -->
  </body>
</html>

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Javascript Validation by karan chanana



               JavascriptValidation




function validate(form_id,email) {

   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.forms[form_id].elements[email].value;
   if(reg.test(address) == false) {

      alert('Invalid Email Address');
      return false;
   }
}
<form id="form_id" method="post" action="action.php" onsubmit="javascript:return validate('form_id','email');">
 
   <input type="text" id="email" name="email" />
 
   <input type="submit" value="Submit" />
</form>

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JavaScript Calculator by karan chanana



                                                                                                                                                                                                                                                 JavaScript Calculator


       <html>   
  1. <head>  
  2.   
  3. <title>Simple Javascript Calculator - Basic Arithmetic Operations</title>  
  4.   
  5. <!-- Aim: Write HTML Code Using JavaScript Functions To Perform Basic Arithmetic Operations. -->  
  6. <!-- 1. Take Two numbers from user say 'Number 1' and 'Number 2'. -->  
  7. <!-- 2. Perform Addition, Subtraction, Multiplication, Division and Modulus. -->  
  8. <!-- 3. Result must be displayed on same HTML Page when respective button is clicked. -->  
  9. <!-- 4. Use <input> tag (HTML Forms Concept) with onclick.-->  
  10. <!-- 5. Call individual Javascript Function, put them inside <head> tag only.-->  
  11. <!-- 6. Javascript Tutorial/Code For Computer Science Students. -->  
  12. <!-- 7. Tested and Written By (c) Gaurav Akrani. -->  
  13.   
  14. <script language="javascript" type="text/javascript">  
  15. function multiply(){  
  16. a=Number(document.calculator.number1.value);  
  17. b=Number(document.calculator.number2.value);  
  18. c=a*b;  
  19. document.calculator.total.value=c;  
  20. }  
  21. </script>  
  22.   
  23. <script language="javascript" type="text/javascript">  
  24. function addition(){  
  25. a=Number(document.calculator.number1.value);  
  26. b=Number(document.calculator.number2.value);  
  27. c=a+b;  
  28. document.calculator.total.value=c;  
  29. }  
  30. </script>  
  31.   
  32. <script language="javascript" type="text/javascript">  
  33. function subtraction(){  
  34. a=Number(document.calculator.number1.value);  
  35. b=Number(document.calculator.number2.value);  
  36. c=a-b;  
  37. document.calculator.total.value=c;  
  38. }  
  39. </script>  
  40.   
  41. <script language="javascript" type="text/javascript">  
  42. function division(){  
  43. a=Number(document.calculator.number1.value);  
  44. b=Number(document.calculator.number2.value);  
  45. c=a/b;  
  46. document.calculator.total.value=c;  
  47. }  
  48. </script>  
  49.   
  50. <script language="javascript" type="text/javascript">  
  51. function modulus(){  
  52. a=Number(document.calculator.number1.value);  
  53. b=Number(document.calculator.number2.value);  
  54. c=a%b;  
  55. document.calculator.total.value=c;  
  56. }  
  57. </script>  
  58.   
  59. </head>  
  60.   
  61. <body>  
  62.   
  63. <!-- Opening a HTML Form. -->   
  64. <form name="calculator">  
  65.   
  66. <!-- Here user will enter 1st number. -->   
  67. Number 1: <input type="text" name="number1">   
  68.    
  69.   
  70. <!-- Here user will enter 2nd number. -->   
  71. Number 2: <input type="text" name="number2">   
  72.   
  73.   
  74. <!-- Here result will be displayed. -->   
  75. Get Result: <input type="text" name="total">   
  76. <!-- Here respective button when clicked, calls only respective artimetic function. -->   
  77. <input type="button" value="ADD" onclick="javascript:addition();">  
  78. <input type="button" value="SUB" onclick="javascript:subtraction();">  
  79. <input type="button" value="MUL" onclick="javascript:multiply();">  
  80. <input type="button" value="DIV" onclick="javascript:division();">  
  81. <input type="button" value="MOD" onclick="javascript:modulus();">  
  82.   
  83. </form>  
  84.   
  85. </body>  
  86. </html>  


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