应用JavaScript正则表达式验证

/** regexp-validate-data.js **/
function anyChar(str) {
    /* Verify at least one nonspace character
     *    or string of characters
     * Return boolean
     */
    return /\S+/.test(str);
}//eof - anyChar

function anyWord(str) {
    /* Verify at least one word character
     *        or string of word characters
     *        a word character is alpha numeric or underscore
     * Return boolean
     */
    return /\w+/.test(str);
}//eof - anyWord

function any3letters(str) {
    /* At least 3 consecutive letters anywhere in str
     *    case insensitive
     * Return boolean
     */
    return /[a-z]{3}/i.test(str);
}//eof - any3letters

function any10Char(str) {
    /* Verify exactly 10 nonspace character
     * Return string
     */
    if (/^\S{10}$/.test(str))
        return "Valid";
    else if (/\s/.test(str))
        return "Invalid space";
    else if (/^\S{11,}$/.test(str))
        return "Too long!";
    else
        return "Too short!";
}//eof - any10Char

function anyVar10(str) {
    /* Verify valid JavaScript variable name
     *     of exactly 10 characters
     * Return string
     */
    if (/^[a-z$_]\w{9}$/i.test(str))
        return "Valid";
    else if (/^[^a-z$_]/i.test(str))
        return "First Char Not Alpha!";
    else if (/^[a-z$_]\W/i.test(str))
        return "Invalid Character!"
    else if (/^\w{11,}$/.test(str))
        return "Too long!";
    else
        return "Too short!";
}//eof - anyVar10

function anyClass5(str) {
    /* Verify valid CSS class name of at least 5 characters
     * Return string
     */
    if (/^[a-z][a-z0-9\-]{4,}$/i.test(str))
        return "Valid";
    else if (/^[^a-z]/i.test(str))
        return "First Char Not Alpha!";
    else if (/[^a-z0-9\-]/i.test(str))
        return "Invalid Character!";
    else
        return "Too short!";
}//eof - anyClass5

function any4Words(str) {
    /* Verify at least 4 words can be 1 letter or digit
     * Return boolean
     */
    return /(\b[a-z0-9]+\b.*){4,}/i.test(str);
}//eof - any4Words

function three3lettered(str) {
    /* Verify at least 3 words having at least 3 characters
     * Return boolean
     */
    return /(\b[a-z0-9]{3,}\b.*){3,}/i.test(str);
}//eof - three3lettered

function varTest(data) {
    /* Verify valid JavaScript variable name any length
     * Return string
     */
    if (/^[a-z$_][\w$]*$/i.test(data))
        return "Valid JavaScript Name";
    else if (/^[^a-z$_]/i.test(data))
        return "Invalid First Character!";
    else
        return "Invalid Character!";
}//eof - varTest

function classTest(data) {
    /* Verify valid CSS class name any length
     * Return string
     */
    if (/^[a-z][a-z0-9\-]*$/i.test(data))
        return "Valid Class Name";
    else if (/^[^a-z]/i.test(data))
        return "Invalid First Character!";
    else
        return "Invalid Character!";
}//eof - classTest

function phpTest(data) {
    /* Verify valid PHP variable name any length
     * Return string
     */
    if (/^\$[\w]*$/i.test(data))
        return "Valid PHP/Perl Identifier";
    else if (/^[^$]/.test(data))
        return "Invalid First Character!";
    else
        return "Invalid Character!";
}//eof - phpTest

function validate_file(data){
    /* Parses filename and extension
     * for specified extenstions
     *
     * Returns Object
     */
    data = data.replace(/^\s*|\s*$/g, ""); //trims string

    return /^[a-z]\w*\.(asp|html|htm|shtml|php)$/i.test(data)
}//eof - validate_file

/* Three different email tests return boolean */
function isEmail1(data) {
    return /^[a-zA-Z0-9_\-.]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9]+$/i.test(data);
}//eof - isEmail1

function isEmail2(data) {
    return /^[\w.\-]+@[\w\-]+\.[a-zA-Z0-9]+$/i.test(data);
}//eof - isEmail2

function isEmail3(data) {
    //recommended expression: most complete
    return /^([\w]+)(\.[\w]+)*@([\w\-]+)(\.[\w]{2,4})(\.[a-z]{2})?$/i.test(data);
}//eof - isEmail3

function isSSN1(data) {
    /* Validate American SSN requiring dashes
     * Return boolean
     */
    return /^\d{3}-\d{2}-\d{4}$/.test(data);
}//eof - isSSN1

function isSSN2(data) {
    /* Validate American SSN dashes optional
     * Return boolean
     */
    return /^\d{3}-?\d{2}-?\d{4}$/.test(data);
}//eof -isSSN2

function isPhone1(data) {
    /* Validate American phone number: (123) 456-7890
     *    requiring parenthesis, space and dash
     * Return boolean
     */
    return /^\(\d{3}\) \d{3}-\d{4}$/.test(data);
}//eof - isPhone1

function isPhone2(data) {
    /* Validate American phone number: (123) 456-7890
     *    requiring parenthesis and dash
     *    optional space
     * Return boolean
     */
    return /^\([1-9]\d{2}\)\s?\d{3}\-\d{4}$/.test(data);
}//eof - isPhone2

function isPhone3(data) {
    /* Validate American phone number: (123) 456-7890
     *    optional parenthesis, space and dash
     * Return boolean
     */
	return /^\(?([1-9]\d{2})(\) ?|[.-])?(\d{3})[.-]?(\d{4})$/.test(data);
}//eof - isPhone3

function isValidDate(date_string, format) {
	/* Validate string user entered as a date in 
	 * 1 of 6 formats
	 *	m/d/y		American month, day, year with 2 or 4 digit year
	 *	mm/dd/yy	Short American with 2 digit year
	 *	mm/dd/yyyy	Long American with 4 digit year
	 *	y/m/d		European year, month, day with 2 or 4 digit year
	 *	yy/mm/dd	European with 2 digit year
	 *	yyyy/mm/dd	European with 4 digit year
	 */
	var days = [0,31,28,31,30,31,30,31,31,30,31,30,31];
	var year, month, day, date_parts = null;
	var rtrn = false;

	/* JS Object/Hash table to branch for format */
	var decisionTree = {
		'm/d/y':{
			're':/^(\d{1,2})[./-](\d{1,2})[./-](\d{2}|\d{4})$/,
			'month': 1,'day': 2, year: 3
		},
		'mm/dd/yy':{
			're':/^(\d{1,2})[./-](\d{1,2})[./-](\d{2})$/,
			'month': 1,'day': 2, year: 3
		},
		'mm/dd/yyyy':{
			're':/^(\d{1,2})[./-](\d{1,2})[./-](\d{4})$/,
			'month': 1,'day': 2, year: 3
		},
		'y/m/d':{
			're':/^(\d{2}|\d{4})[./-](\d{1,2})[./-](\d{1,2})$/,
			'month': 2,'day': 3, year: 1
		},
		'yy/mm/dd':{
			're':/^(\d{1,2})[./-](\d{1,2})[./-](\d{1,2})$/,
			'month': 2,'day': 3, year: 1
		},
		'yyyy/mm/dd':{
				're':/^(\d{4})[./-](\d{1,2})[./-](\d{1,2})$/,
				'month': 2,'day': 3, year: 1
		}
	};

	var test = decisionTree[format]; //Get regexp, etc matching format
	if (test) {
		date_parts = date_string.match(test.re); //parse string
		if (date_parts) {
			year = date_parts[test.year] - 0;
			month = date_parts[test.month] - 0;
			day = date_parts[test.day] - 0;

			//Get number of days in month -- zero for invalid months
			test = (month == 2 && 
					isLeapYear() && 
					29 || days[month] || 0);

			rtrn = 1 <= day && day <= test; //Check day is in range; false for invalid months
		}
	}

	function isLeapYear() {
		return (year % 4 != 0 ? false : 
			( year % 100 != 0? true: 
			( year % 1000 != 0? false : true)));
	}
	return rtrn;
}//eof isValidDate

/* regexp-validate-numbers.js */
function uInteger(str) {
    /* Verify unsigned integer
     *        ignoring leading and trailing spaces
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^[0-9]+$/.test(str);
}//eof - uInteger

function uInteger2(str) {
    /* Verify unsigned integer
     *        ignoring leading and trailing spaces
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^\d+$/.test(str);
}//eof uInteger2

function uInteger3to5(str) {
    /* Verify unsigned integer 3 to 5 digits
     *        ignoring leading and trailing spaces
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^\d{3,5}$/.test(str);
}//eof - uInteger3to5

function sInteger(str) {
    /* Verify signed integer at least one digit
     *        ignoring leading and trailing spaces
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^[-+]?[0-9]+$/.test(str);
}//eof - sInteger

function sInteger2(str) {
    /* Verify signed integer at least one digit
     *        ignoring leading and trailing spaces
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^[-+]?\d+$/.test(str);
}//eof - sInteger2

function sInteger3to5(str) {
    /* Verify signed integer 3 to 5 digits
     *        ignoring leading and trailing spaces
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^[-+]?\d{3,5}$/.test(str);
}//eof - sInteger3to5

function isFloat(str) {
    /* Verify signed float decimal optional
     *    ignoring leading and trailing spaces
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^[-+]?[0-9]+(\.[0-9]+)?$/.test(str);
}//eof isFloat

function isFloat2(str) {
    /* Verify signed float decimal optional
     *    ignoring leading and trailing spaces
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^[-+]?\d+(\.\d+)?$/.test(str);
}//eof isFloat2

function isFloat3to5d0to3(str) {
    /* Verify float 3 to 5 digits, decimal max 3 digits
     *    if decimal point must have at least 1 decimal digit
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^[-+]?\d{3,5}(\.\d{1,3})?$/.test(str);
}//eof - isFloat3to5d10to3

function isCurrency1(str) {
    /* Verify formatted currency optional $, no leading zero
     *    reguire comma separator, 2 digit decimal if any
     *    ignore leading and trailing spaces
     * Return boolean
     */
    str = str.replace(/^\s+|\s+$/g, '');
    return /^\$?[1-9][0-9]{0,2}(,[0-9]{3})*(\.[0-9]{2})?$/.test(str);
}//eof - isCurrency1

function isCurrency2(str) {
    /*  Verify formatted currency optional $, no leading zero
     *    reguire comma separator, 2 digit decimal if any
     *    fillin missing decimal
     *    ignore leading and trailing spaces
     * Return string
     */
    str = str.replace(/^\s+|\s+$/g, '');
    if (/^\$?[1-9][0-9]{0,2}(,[0-9]{3})*(\.[0-9]{0,2})?$/.test(str) ) {

        if (/\.[0-9]$/.test(str) ) {
            //needs trailing zero
            str += "0";
        }
        else if (/\.$/.test(str)) {
            //needs both trailing zeroes
            str += "00";
        }
        else if (!/\.[0-9]{2}$/.test(str) ) {
            //needs everything
            str += ".00";
        }
        return str;
    }
    else {
        return "Invalid";
    }
}//eof - isCurrency2

function isCurrency3(str) {
    /* Verify formatted currency optional $, no leading zero
     *    reguire comma separator, 2 digit decimal if any
     *    fillin missing decimal
     *    ignore leading and trailing spaces
     * Return string
     */
    str = str.replace(/^\s+|\s+$/g, '');

    if (/^[-+]?\$?[1-9]\d{0,2}(,\d{3})*(\.\d{0,2})?$/.test(str) ) {

        if (/\.\d$/.test(str)) {
            str += "0";
        }
        else if (/\.$/.test(str) ) {
            str += "00";
        }
        else if (!/\.\d{2}$/.test(str) ) {
            str += ".00";
        }
        return str;
    }
    else {
        return "Invalid";
    }
}//eof - isCurrency3