常用的Javascript表单正则验证函数

/**
* 传入一个input对象，自动检测里面的值
*/
function CheckInput(){

this.checkLength=function(obj,len)
{
this.value = obj.value;
var length=6;
if(len!=null){
length=len;
}
if(this.value.length<length)
{
return false;
}
return true;
}
this.isNotNumber=function(obj)//检测数字，是数返回false，不是数返回true
{
this.value = obj.value;
if(isNaN(this.value)){
return true;
}else{
return false;
}
}
this.haveChinese=function(obj){//检查中文，如果有中文返回true
this.value = obj.value;
var reg = /[\u4e00-\u9fa5]/;
var reg2 = /[^\x00-\xff]/;
return reg.test(this.value)||reg2.test(this.value);

}
this.haveIllegalChar=function(obj)//检查特殊字符，有返回true
{
this.value = obj.value;
var pattern=/[`~!#$%^&*()_+<>?:"{},\/;'[\]]/im;
if(pattern.test(this.value)){
return true;
}
return false;
}
this.isEmpty=function(obj){//检查是否为空,为空返回true
this.value = obj.value;
if(this.value.length>0){
return false;
}else{
return true;
}
}

this.isPhoneNum = function(obj)
{
this.value = obj.value;
var reg = /^1[3|5][0-9]\d{8}$/;
return reg.test(this.value);
}

this.isQQ = function(obj){
this.value = obj.value;
var reg = /^[1-9]\d{4,10}$/;
return reg.test(this.value);
}

this.isEmail = function(obj)
{
this.value = obj.value;
var reg = /^(\w)+(\.\w+)*@(\w)+((\.\w+)+)$/;
return reg.test($(obj).val());
}

this.checkSize = function(obj,min,max)
{
this.value = obj.value;
var myMin=0;
var myMax=100;
if(min!=null) myMin=min;
if(max!=null) myMax=max;
if(this.value<myMin||this.value>myMax){
return false;
}
else
{
return true;
}
}

}