Some Frequently used Java Script Functions

/* --------------------- Used in KeyPress Validations --------------------------------
  KeyAscii Character
  32   Space
  40   (
  41   )
  45   -
  44   ,
  46   .
  48 - 57  0 to 9
  13   Enter  
 */
  
 
 function closewindows()
 {
  if(win && win.open && !win.closed)
  win.close();
 }
 
 
 //----------------------------------------------------------------
 function CheckNumeric(obj)
 { 
  if (document.getElementById(obj).value != '.')
  {
   var num = document.getElementById(obj).value;
   var testval = Math.ceil(num*10/10);
  
   if (!(testval > -1))
   {
    document.getElementById(obj).value = "";
    return;
   }     
  }
 }
 
 /* --------- allows any float values with any number of decimal places ----------- */
 function AllowFloat(obj)
 {
  if (window.event.keyCode == 13)
  {
   //do nothing
  }
  else
  { 
   if (!((window.event.keyCode >= 48) && (window.event.keyCode <= 57)))
   {
    if (!(window.event.keyCode == 46))
    {
     window.event.keyCode = null
    }
    else if (window.event.keyCode == 46)
    {
     if (document.getElementById(obj).value.lastIndexOf(".") > -1)
     {
      window.event.keyCode = null
     }
    }
   }
  }
 }
 
 /* --------- allows only 2 decimal places ----------- */
 function AllowCurrency(obj)
 {
  if (window.event.keyCode == 13)
  {
   //do nothing
  }
  else
  { 
   if (!((window.event.keyCode >= 48) && (window.event.keyCode <= 57)))
   {
    if (!(window.event.keyCode == 46))
    {
     window.event.keyCode = null
    }
    else if ( window.event.keyCode == 46)
    {
     if (document.getElementById(obj).value.lastIndexOf(".") > -1)
     {
      window.event.keyCode = null
     }
    }
   }
   else
   {
    /* --- extra added to restrict to 2 decimal places --- */
    if (document.getElementById(obj).value.lastIndexOf(".") > -1)
    {
     if((document.getElementById(obj).value.length)-(document.getElementById(obj).value.lastIndexOf(".")) > 2)
     {
      window.event.keyCode = null
     }
    }
   }
  }
 }
   
 
 function AllowInt(obj)
 {
  if (window.event.keyCode == 13)
  {
   //do nothing
  }
  else
  { 
   if (!((window.event.keyCode >= 48) && (window.event.keyCode <= 57)))
   {
    window.event.keyCode = null
   }
  }
 }
 
 function AllowPhoneFax(obj)
 {
  if (window.event.keyCode == 13)
  {
   //do nothing
  }
  else
  { 
   if (!((window.event.keyCode >= 48) && (window.event.keyCode <= 57)))
   {
    if (!( (window.event.keyCode == 40) || (window.event.keyCode == 41) || (window.event.keyCode == 44) || (window.event.keyCode == 45) || (window.event.keyCode == 32) ))
    {
     window.event.keyCode = null
    }
   }
  }
 }
 
 function AllowZip(obj)
 {
  if (window.event.keyCode == 13)
  {
   //do nothing
  }
  else
  { 
   if (!((window.event.keyCode >= 48) && (window.event.keyCode <= 57)))
   {
    window.event.keyCode = null
   }
  }
 }
 
 function AllowNonNumeric(obj)
 {
  if (window.event.keyCode == 13)
  {
   //do nothing
  }
  else
  { 
   if (((window.event.keyCode >= 48) && (window.event.keyCode <= 57)))
   {
    window.event.keyCode = null
   }
  }
 } 
 
 function AllowCreditCardNumber(obj)
 {
  if (window.event.keyCode == 13)
  {
   //do nothing
  }
  else
  { 
   if (!((window.event.keyCode >= 48) && (window.event.keyCode <= 57)))
   {
    if (!( window.event.keyCode == 32 ))
    {
     window.event.keyCode = null
    }
   }
  }
 }   

function Trim(TRIM_VALUE){
if(TRIM_VALUE.length < 1){
return"";
}
TRIM_VALUE = RTrim(TRIM_VALUE);
TRIM_VALUE = LTrim(TRIM_VALUE);
if(TRIM_VALUE==""){
return "";
}
else{
return TRIM_VALUE;
}
} //End Function

 

 

function RTrim(VALUE)
{
 var w_space = String.fromCharCode(32);
 var v_length = VALUE.length;
 var strTemp = "";
 if(v_length < 0){
  return"";
 }
 var iTemp = v_length -1;

 while(iTemp > -1)
 {
  if(VALUE.charAt(iTemp) == w_space){
  }
  else{
  strTemp = VALUE.substring(0,iTemp +1);
  break;
  }
  iTemp = iTemp-1;

 } //End While
return strTemp;

} //End Function

 

 

function LTrim(VALUE){
var w_space = String.fromCharCode(32);
if(v_length < 1){
return"";
}
var v_length = VALUE.length;
var strTemp = "";

var iTemp = 0;

while(iTemp < v_length){
if(VALUE.charAt(iTemp) == w_space){
}
else{
strTemp = VALUE.substring(iTemp,v_length);
break;
}
iTemp = iTemp + 1;
} //End While
return strTemp;
} //End Function