I use the following Script for Decimal validate. I need to enter only numbers and dot symbol like 123.00 only. The following function does not support letters that fine, but it does not allow to enter dot(.) symbol also? How to enter dot symbol using this function?
function isNumberKey(evt)
{
var charCode = (evt.which) ? evt.which : event.keyCode
if (charCode > 31 && (charCode < 48 || charCode > 57))
return false;
else
return true;
}
function isNumberKey(evt)
{
var charCode = (evt.which) ? evt.which : event.keyCode
if (charCode != 46 && charCode > 31
&& (charCode < 48 || charCode > 57))
return false;
return true;
}
Use regular expressions, its a more elegant method.
function isNumberKey(evt)
{
var charCode = (evt.which) ? evt.which : event.keyCode
if (charCode.match('/^[-+]?([0-9]*\.[0-9]+|[0-9]+)$/'))
return false;
else
return true;
}
function validateFloatKeyPress2(valor, presicion, event) {
var keyCode = (document.all) ? event.keyCode : event.which;
if (keyCode == 8) {
return true;
}
if (keyCode == 46 && valor.value.indexOf(".") >= 0) {
return false;
}
//Enable Only float values
if ((keyCode >= 48 && keyCode <= 57) || (keyCode == 46)) {
if (reverse(valor.value).indexOf(".") > (presicion - 1)) {
return false;
}
return true;
}
else {
return false;
}
}
function reverse(s) {
var o = '';
for (var i = s.length - 1; i >= 0; i--)
o += s[i];
return o;
}
Try this:
//Validating Numeric Fields
function validate(x) {
var decimal = /^[1-9][\.\d]*(,\d+)?$/;
if (x.match(decimal)) {
return true;
} else {
return false;
}
}
Also you can check parseFloat method and that returns NaN.
check thorugh isNaN() method
var a =3.00003
isNaN(a) will return false
var b ='3.0.0' isNaN(b) will return true
i think this method will solve your problem.
function checkDecimal(num){
var chkDecimal= /^\d+\.\d{0,2}$/;
return chkDecimal.test(num);
}
alert(checkDecimal(0.2))
alert(checkDecimal(1))
Complete solution for your problem is
function isNumberKey(e)
{
var code = (code ? code : e.which);
if (code != 46 && code > 31 && (code < 48 || code > 57))
return false;
//if it is (.)
else if (code == 46) {
var Value = this.value;
//if value already contains (.) character
if (Value.indexOf('.') != -1) {
var splt = Value.split('.');
//if there is already(.) char then return false
if (splt.length >= 2)
return false;
}
}
return true;
}
function IsNumeric(e) {
var keyCode = e.which ? e.which : e.keyCode;
var ret = ((keyCode == 46 || keyCode >= 48 && keyCode <= 57) || specialKeys.indexOf(keyCode) != -1);
return ret;
}
