Javascript 表單字串檢查

測試字串是否符合正規表示：

/**
 * Check string
 * @date 2012/08/13
 * @by Ron Lee
 */

//letters and numbers and underscore
function validLiteral(INPUT) {
    var pattern = /^(\w+)$/; // a-zA-Z0-9_
    var result=pattern.test(INPUT);
    return result;
}

//numbers
function validNum(INPUT) {
    var pattern = /^(\d+)$/;  // 0-9
    var result = pattern.test(INPUT);
    return result;
}

//account
function validAccount(INPUT) {
    var pattern = /^[a-zA-Z]+([-_\.]\w+)*$/;
    var result=pattern.test(INPUT);
    return result;
}

//password
function validPassword(INPUT) {
    var pattern = /^([^\'|\"]+)$/; // quote is not allowed
    var result=pattern.test(INPUT);
    return result;
}

//email
function validEmail(INPUT) {
    var pattern = /^(\w+)([-\.\w]*)@([-\w]+)(\.[-\w]+)+$/i;
    var result = pattern.test(INPUT);
    return result;
}

//phone number
function validPhone(INPUT) {
    var numExp = /([\d-]+)/;  // phone number: numbers and hyphens: 12-3456-789
    var result = pattern.test(INPUT);
    return result;
}

//date
function validDate(year, month, day) {
    var dateStr = (year+'/'+month+'/'+day).replace(/\b(\d)\b/g, '0$1');
    if (!dateStr) return false;
    if (!dateStr.match(/^\d{4}[\/-]\d{1,2}[\/-]\d{1,2}$/)) return false;
    var dateObj = new Date(dateStr);
    var get_dateStr = dateObj.getFullYear()+'/'+(dateObj.getMonth()+1)+'/'+dateObj.getDate();
    get_dateStr = get_dateStr.replace(/\b(\d)\b/g, '0$1');
    //document.write(dateStr+'<BR>'+get_dateStr+'<BR>');
    return dateStr==get_dateStr;
}
function addTimeZero(dateString){
    return document.write(dateString.replace(/\b(\d)\b/g, '0$1'));
}
//file name in url
function getUrlFilename(INPUT) {
    var url = window.location.toString();
    var result= url.split(/(\\|\/)/g).pop();
    return result;
}