JS input 數字驗證代碼

/*
**@控制控制項只能輸入數字,含-(負號).(小數點)
**@Inline HTML: <ELEMENT ... onkeypress="javascript:onlyNumber()" style="ime-mode:disabled"> For Input
**@Event property: object.attachEvent("onkeypress",onlyNumber);object.style.imeMode = "disabled";
**@Author:wangwq@atools
*/
function onlyNumber(){
if(!(((window.event.keyCode >= 48) && (window.event.keyCode <= 57))
|| (window.event.keyCode == 13) || (window.event.keyCode == 46)
|| (window.event.keyCode == 45))){
window.event.keyCode = 0 ;
}
}
// 本函數用於限制文本輸入框中只能輸入數字"0"到"9"
//@Inline HTML: <ELEMENT ... onkeypress="javascript:JHshNumberText()" style="ime-mode:disabled"> For Input
//@Event property: object.attachEvent("onkeypress",JHshNumberText);object.style.imeMode = "disabled";
function JHshNumberText()
{
if ( !(((window.event.keyCode >= 48) && (window.event.keyCode <= 57)) || (window.event.keyCode == 13)))
{
window.event.keyCode = 0 ;
}
}
<input name="aa" type="text" onkeypress="javascript:JHshNumberText()" style="ime-mode:disabled" ondragenter="javascript:return false;" onpaste="return false">