Menu
I have pain-time when making input that only allows float number with jquery library. my code can't prevent chacacter "." when it's becoming first input, can anyone guide me to solve this problem?
$('.filterme').keypress(function(eve) {
if ( ( eve.which != 46 || $(this).val().indexOf('.') != -1 )
&& ( eve.which < 48 || eve.which > 57 )
|| ( $(this).val().indexOf('.') == 0)
)
{
eve.preventDefault();
}
});
240
To take a float user input: Use the input() function to take input from the user. Use a try/except statement to make sure the input value is a float. Use the float() class to convert the string to a float.
How to take input as a float? There is no such method, that can be used to take input as a float directly – but input string can be converted into a float by using float() function which accepts a string or a number and returns a float value.
For any floating-point numbers, use type="number”, as it is widely supported and can also help to prevent random input.
float and double both have varying capacities when it comes to the number of decimal digits they can hold. float can hold up to 7 decimal digits accurately while double can hold up to 15. Let's see some examples to demonstrate this.
I use this - works for keyboard input or copy and paste
$('input.float').on('input', function() {
this.value = this.value.replace(/[^0-9.]/g, '').replace(/(\..*?)\..*/g, '$1');
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<input type="text" class="float" />Explanation:
55
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
