allowing input only for float number

Question

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 guid

Answer 1

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');
});

Explanation:

• First regex replaces anything that's not a number or a decimal.
• Second regex removes any instance of a second decimal.