验证非法字符

验证非法字符：var  str=document.getElementById("tt").value;
  var reg =/^(?:[\u4e00-\u9fa5]*\w*\s*)+$/;
  alert(reg.test(str));
验证电话号码
  var  phno=document.getElementById("tt").value;
var phoneCheck1 = /^[0-9]{8}$/;
var phoneCheck2 = /^(13[0-9]{9})$/;       
var phoneCheck3 = /^(15[0-9]{9})$/;
var phoneCheck4 = /^(18[0-9]{9})$/;
var phoneCheck5 = /^([0-9]{4}-[0-9]{8})$/;
var phoneCheck6 = /^([0-9]{3}-[0-9]{8})$/;
var phoneCheck7 = /^([0-9]{4}-[0-9]{7})$/;
var phoneCheck8 = /^[0-9]{7}$/;
var prompt = "请输入正确的电话号码!"
alert(phno);
//设置启用的匹配串，下面是启用了4种
if( phoneCheck1.exec(phno) || phoneCheck2.exec(phno) || phoneCheck3.exec(phno)
|| phoneCheck4.exec(phno) || phoneCheck5.exec(phno) || phoneCheck6.exec(phno)
|| phoneCheck7.exec(phno) || phoneCheck8.exec(phno) )
{
alert(phno+"准确");
}
else{
alert( prompt );
}


var err_msg = "文件夹名稱不能包含下列字符之一:\n \\ / : * ? \" < > | & , ";
if (document.all)
{
code = window.event.keyCode;
}
else {
code = arguments.callee.caller.arguments[0].which;
}
var character = String.fromCharCode(code);
var txt = new RegExp("[\\*,\\&,\\\\,\\/,\\?,\\|,\\:,\\<,\\>,\"]");
if (txt.test(character)) {
alert(err_msg);
详细出处参考：http://www.jb51.net/article/24469.htm