I have a textbox with numeric inputs. Here is my javascript set to numeric textbox. But when I try to input letters, "e" is allowed. Problem: What I want to do is no letter should be allowed, only numeric numbers and no negative integer.
HTML:
<input type="numeric" id="usrid" name="usrid" placeholder="Enter number">
Javascript:
$(document).ready(function() {
$("#usrid").numeric();
});
You can use the type="number" and min=0 attributes in your input to enforce validation on these fields:
<input type="number" id="usrid" name="usrid" min=0 placeholder="Enter number">
However, this won't prevent input of negative or non-numeric characters into the input field. For that you'll need to bind a javascript event:
$('#usrid').bind('keypress', function (event) {
var regex = new RegExp("^[0-9]+$");
var key = String.fromCharCode(!event.charCode ? event.which : event.charCode);
if (!regex.test(key)) {
event.preventDefault();
return false;
}
});
If you want to take only the number input then input type should be number like following
<input type="number" id="usrid" name="usrid" placeholder="Enter number">
but it takes the letter 'e' which is stands for exponential value.Better you have try the following which use js to validate the input using on 'keypress'
HTML code:
<input type="input" id="usrid" name="usrid" placeholder="Enter number">
JavaScript Code:
<script type="text/javascript">
$(document).ready(function() {
$('[id^=usrid]').keypress(validateNumber);
});
function validateNumber(e) {
var key = window.e ? e.keyCode : e.which;
if (e.keyCode === 8 || e.keyCode === 46
|| e.keyCode === 37 || e.keyCode === 39) {
return true;
}
else if ( key < 48 || key > 57 ) {
return false;
}
else return true;
};
</script>
you can try this
<form>
Quantity (between 1 and 5):
<input type="number" name="quantity" min="1" max="5"><br>
<input type="submit">
</form>
in this page you can find more example about of limit of number, in html http://www.w3schools.com/tags/att_input_max.asp
