$(‘#btn’).keypress(function(e){
if((e.shiftKey && e.keyCode == 45) || e.which!=8 &&
e.which!=0 &&(e.which<48 || e.which>57))return false
});
jQuery 限制input只能輸入數字的完美解決方案
$(‘#btn’).keypress(function(e){
if((e.shiftKey && e.keyCode == 45) || e.which!=8 &&
e.which!=0 &&(e.which<48 || e.which>57))return false
});