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 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(); } }); JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

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'); }); Run code snippetExpand snippet Explanation: First regex replaces anything that's not a number or a decimal. Second regex removes any instance of a second decimal.