解决方法
运行代码段来看它的工作
$('input.number').keyup(function(event) {
// skip for arrow keys
if(event.which >= 37 && event.which <= 40) return;
// format number
$(this).val(function(index,value) {
return value
.replace(/\D/g,"")
.replace(/\B(?=(\d{3})+(?!\d))/g,",")
;
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script> <input class="number">
