Only Numbers

Javascript textbox validation to allow only numbers, decimal and backspace

// Allow only backspace and delete and decimal 

if  (event .keyCode == 46 || event .keyCode == 8  || event .keyCode == 9||(event .keyCode==37)||

           (event .keyCode==39)) {

// let it happen,'t do anything 

}

else  {

// Ensure that it is a number and stop the keypress 

if  ((event .keyCode >= 48 && event .keyCode <= 57) ||(event .keyCode==110) ||(event .keyCode==190) || (event .keyCode >= 96 && event .keyCode <= 105)) {

}

else  {

event .preventDefault();

}

}

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