Java never die » javascript

How to edit firefox configuration settings

admin — Sun, 24 Jan 2010 21:54:45 +0000

Type in address bar about:config and press Enter.

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How to allow only numbers(digits) to input

admin — Sun, 16 Aug 2009 12:14:28 +0000

This is javascript function that doesn’t permits to input characters others than number:


function inputOnlyNumbers(evt){
var e = window.event || evt; // for trans-browser compatibility
var charCode = e.which || e.keyCode;
if ((charCode > 47 && charCode < 58) || charCode == 8){
return true;
}
return false;

}

And this is how to call it example html snippet:



    
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DOM: how to delete table row(s)

admin — Mon, 06 Apr 2009 14:28:40 +0000

delete first row:

function deleteFirstRow(tableId){
     var table = document.getElementById('tableId');
     table.deleteRow(0);
}

delete last row:

function deleteLastRow(tableId){
     var table = document.getElementById('tableId');
     table.deleteRow(table.rows.length - 1);
}

delete all rows:

function deleteAllRows(tableId){
     var table = document.getElementById('tableId');
     while (table.rows.length > 0){
		table.deleteRow(table.rows.length - 1);
     }
}

DOM:how to remove select options

DOM:how to remove select options

admin — Thu, 02 Apr 2009 15:26:01 +0000

remove first option:

function removeFirstOption(selectId)
{
  var select = document.getElementById(selectId);
    select.remove(0);
}

remove last option:

function removeLastOption(selectId)
{
  var select = document.getElementById(selectId);
    select.remove(select.length - 1);
}

remove all options:

function removeAllOptions(selectId)
{
  var select = document.getElementById(selectId);
  while (select.length > 0)
  {
    select.remove(select.length - 1);
  }
}

DOM: how to delete table row(s)