유효성검사2

/*******************************************************************************
* 공백인지
*******************************************************************************/
function isEmpty(str)
{
    if(getLength(trim(str)) <= 0)    return true;
    else                            return false;
}

/*******************************************************************************
* 공백제거
*******************************************************************************/
function trim(str)
{
    return str.replace(/^s+|s+$/g, ');
}

function delSpace(str)
{
    return str.replace(/s+/g, ');
}

/*******************************************************************************
* 숫자만 가능
*******************************************************************************/
function delChar(obj)
{
    obj.value = obj.value.replace(/[^0-9]+/g, "");
}

/*******************************************************************************
* 체크박스 선택
*******************************************************************************/
var checkall_flag = false;

function checkAll(form, obj_name)
{
    var length = form.elements.length;

    for (var i = 0; i < length; i++)
    {
        if(form.elements[i].name == obj_name && form.elements[i].disabled == false)
            form.elements[i].checked = !checkall_flag;
    }

    checkall_flag = !checkall_flag;
}

function checkEx(form, obj_name)
{
    var length = form.elements.length;

    for (var i = 0; i < length; i++)
    {
        if(form.elements[i].name == obj_name)
            form.elements[i].checked = !form.elements[i].checked;
    }
}

/*******************************************************************************
* 체크박스 선택되어 있는지
*******************************************************************************/
function isChecked(form, obj_name)
{
    var is_checked_flag = false;
    var length = form.elements.length;

    for (var i = 0; i < length; i++)
    {
        if(form.elements[i].name == obj_name && form.elements[i].checked == true)
        {
            is_checked_flag = true;
            break;
        }
    }

    return is_checked_flag;
}

/*******************************************************************************
* 메세지 박스 초기화
*******************************************************************************/
function checkMsg(obj)
{
    if(trim(obj.value) == "여기에 메세지를 입력하세요.")
        obj.value = "";
}

/*******************************************************************************
* 바이트 체크 80bytes 이상
*******************************************************************************/
function checkBytes(form)
{
    var page = 0;
    var body_length = getLength(form.body.value);

    form.bytes.value = body_length;

    if(body_length)
        page = parseInt(body_length / 80);

    if(body_length % 80)
        page += 1;

    if(typeof(form.page) != "undefined")
        form.page.value = page;
}

/*******************************************************************************
* 바이트 체크 80bytes 까지
*******************************************************************************/
function checkBytes2(form, max_length)
{
    var page = 0;
    var body_length = getLength(form.body.value);

    if(body_length > max_length)
    {
        alert(max_length + "bytes 이상 입력할 수 없습니다.");
        form.body.value    = stringCut(form.body.value, max_length);
        body_length        = getLength(form.body.value);
    }

    if(body_length)
        page = parseInt(body_length / 80);

    if(body_length % 80)
        page += 1;

    if(typeof(form.page) != "undefined")
        form.page.value = page;

    form.bytes.value = body_length;
}

/*******************************************************************************
* MMS 바이트 체크
*******************************************************************************/
function checkMMSBytes(form, max_length)
{
    var body_length = getLength(form.msg.value);

    if(body_length > max_length)
    {
        alert(max_length + "bytes 이상 입력할 수 없습니다.");
        form.msg.value    = stringCut(form.msg.value, max_length);
        body_length        = getLength(form.msg.value);
    }

    form.msg_size.value = body_length;
}

/*******************************************************************************
* 80bytes씩.. 잘라 리턴..
*******************************************************************************/
function getParseBodys(str)
{
    var bodys        = new Array();
    var length        = 0;
    var start_idx    = 0;

    for(var i = 0; i < str.length; i++)
    {
        if(escape(str.charAt(i)).length >= 4)
            length += 2;
        else
            if(escape(str.charAt(i)) != "%0D")
                length++;

        if(length >= 80 || i == str.length - 1)
        {
            if(length > 80)
                i--;

            bodys[bodys.length] = str.substring(start_idx, i + 1);

            length = 0;
            start_idx = i + 1;
        }
    }

    return bodys;
}

/*******************************************************************************
* 문자열 자르기
*******************************************************************************/
function stringCut(str, max_length)
{
    var count = 0;

    for(var i = 0; i < str.length; i++)
    {
        if(escape(str.charAt(i)).length >= 4)
            count += 2;
        else
            if(escape(str.charAt(i)) != "%0D")
                count++;

        if(count > max_length)
        {
            if(escape(str.charAt(i)) == "%0A")
                i--;
            break;
        }
    }

    return str.substring(0, i);
}

/*******************************************************************************
* 문자열 길이를 리턴한다.
*******************************************************************************/
function getLength(str)
{
    var length = 0;

    for(var i = 0; i < str.length; i++)
    {
        if(escape(str.charAt(i)).length >= 4)
            length += 2;
        else if(escape(str.charAt(i)) == "%A7")
            length += 2;
        else
            if(escape(str.charAt(i)) != "%0D")
                length++;
    }

    return length;
}

/*******************************************************************************
* 쿠키값 리턴
*
* name    -    쿠키명
*******************************************************************************/
function getCookie(name)
{
    var label = name + "=";
    var label_len = label.length;
    var cookie_len = document.cookie.length;
    var i = 0;

    while (i < cookie_len)
    {
        var j = i + label_len;

        if (document.cookie.substring(i, j) == label)
        {
            var cookie_end = document.cookie.indexOf(";", j);
            if (cookie_end == -1)
                cookie_end = document.cookie.length;

            return unescape(document.cookie.substring(j, cookie_end));
        }
        i++;
    }
    return "";
}

/*******************************************************************************
* 쿠키설정
*
* name            -    쿠키명
* value            -    값
* expiredays    -    시간 (일단위)
*******************************************************************************/
function setCookie( name, value, expiredays )
{
    var today = new Date();
    today.setDate(today.getDate() + expiredays);
    document.cookie = name + "=" + escape(value) + "; path=/; expires=" + today.toGMTString() + ";";
}

/*******************************************************************************
* 이통사 번호 체크
*
* str    - 전화번호
*******************************************************************************/
var tel = new Array("010", "011", "016", "017", "018", "019");

function isHandPhone(str)
{
    var flag = false;

    if(str.length > 9 && str.length < 12)
    {
        for(var i = 0; i < tel.length; i++)
        {
            if(str.substring(0, 3) == tel[i])
            {
                flag = true;
                break;
            }
        }
    }
    return flag;
}