注：包括数字、数字和点、中英文、IP地址、邮箱、电话号码等等
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://、/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /></head><script>/*只能输入数字，可按退格键删除数字*/function vaildIntegerNumber(evnt){evnt=evnt||window.event;var keyCode=window.event?evnt.keyCode:evnt.which;return keyCode>=48&&keyCode<=57||keyCode==8;}/*只能输入数字和点,可按退格键删除数字或点*/function vaildFloatNumber(evnt){evnt=evnt||window.event;var keyCode=window.event?evnt.keyCode:evnt.which;return keyCode>=48&&keyCode<=57||keyCode==46||keyCode==8;}/*只能输入数字和一个点,可按
