对文本框只允许输入数字

1. οnkeyup="this.value=this.value.replace(/"D/g,'')" onafterpaste="this.value=this.value.replace(/"D/g,'')"

2. //限制输入为数字οnkeydοwn="CheckInput()"

function CheckInput()

{

if(!((event.keyCode>=48 && event.keyCode<=57)

||(event.keyCode>=37 && event.keyCode<=40)

||(event.keyCode>=96 && event.keyCode<=105)

||(event.keyCode==59)

||(event.keyCode==46)

||(event.keyCode==8)

||(event.keyCode==17)

||(event.keyCode==64)

||(event.keyCode==86)

||(event.keyCode==88)

||(event.keyCode==67)

||(event.keyCode==229)

||(event.keyCode==188)))

event.returnValue=false;

}