var Common = {
Trim: function(str) { return str.replace(/(^/s*)|(/s*$)/g, ""); },
isNumber : function(str) {return /[/d|/.|,]+/.test(str);},
isEmail : function(sEmail) { return /^/w+((-/w+)|(/./w+))*/@[A-Za-z0-9]+((/.|-)[A-Za-z0-9]+)*/.[A-Za-z0-9]+$/.test(sEmail);}
}

function CheckRadio(radioID) {
var result = false;
var radio = F(radioID);
for (var i = 0; i < radio.length; i++) {
if (radio[i].checked) {
result = true;
break;
}
}
return result;
}

Util.js

var Common = {
Trim: function(str) {
/// <summary>
/// 去除二邊空格
/// </summary>
/// <param name="str">要去空格的字符</param>
/// <returns>string</returns>
},
isNumber : function(str) {
/// <summary>
/// 判斷是否是數值.
/// </summary>
/// <param name="str">驗證字符</param>
/// <returns>bool</returns>
},
isEmail: function(sEmail) {
/// <summary>
/// 判斷是否是Email.
/// </summary>
/// <param name="sEmail">Email字符</param>
/// <returns>bool</returns>
}
}
function CheckRadio(radioID) {
/// <summary>
/// 是否至少選擇了一個
/// </summary>
/// <param name="radioID">RadionID</param>
/// <returns>bool</returns>
}