What is the best way to restrict "number"-only input for textboxes?
I am looking for something that allows decimal points.
I see a lot of examples. But have yet to decide which one to use.
Update from Praveen Jeganathan
No more plugins, jQuery has implemented its own jQuery.isNumeric() added in v1.7.
See: https://stackoverflow.com/a/20186188/66767
Below is what I use to literally block the keystrokes. This only allows numbers 0-9 and a decimal point. Easy to implement, not a lot of code, and works like a charm:
<script>
function isNumberKey(evt) {
var charCode = (evt.which) ? evt.which : event.keyCode;
if (charCode != 46 && charCode > 31 && (charCode < 48 || charCode > 57)) {
return false;
} else {
return true;
}
}
</script>
<input value="" onkeypress="return isNumberKey(event)">
This is very simple that we have already a javascript inbuilt function "isNaN" is there.
$("#numeric").keydown(function(e){
if (isNaN(String.fromCharCode(e.which))){
return false;
}
});