JS-EL Regular expression

<script>

Check whether the total number consists of 20 digits

var patrn=/^[0-9]{1,20}$/;
Alert (Patrn.test ("-30000000000"));

Check login name: Only 5-20 entries begin with a letter, can be numbered, "_", "." The string

var patrn=/^[a-za-z]{1} ([a-za-z0-9]|[. _]) {4,19}$/;
Alert (patrn.test (' a_1111 '));

Verify user name: Only 1-30 strings beginning with a letter/underscore can be entered

var patrn=/^ ([a-za-z]|[ _]) {1,30}$/;
Alert (patrn.test (' _aaaaa '));

Check password: Only 6-20 letters, numbers, underscores can be entered
function ispasswd (s)
{
var patrn=/^ (\w) {6,20}$/;
if (!patrn.exec (s)) return false
return True
}

Check the ordinary telephone, fax number: Can "+" start, in addition to the number, can contain "-"
function Istel (s)
{
var patrn=/^[+]{0,1} (\d) {1,3}[]? ([-]? (\d) {1,12}) +$/;
var patrn=/^[+]{0,1} (\d) {1,3}[]? ([-]? ((\d) | []) {1,12}) +$/;
if (!patrn.exec (s)) return false
return True
}
Check mobile phone Number: Must start with a number, except the number, can contain "-"
function Ismobil (s)
{
var patrn=/^[+]{0,1} (\d) {1,3}[]? ([-]? ((\d) | []) {1,12}) +$/;
if (!patrn.exec (s)) return false
return True
}
Verifying ZIP Codes
function Ispostalcode (s)
{
var patrn=/^[a-za-z0-9]{3,12}$/;
var patrn=/^[a-za-z0-9]{3,12}$/;
if (!patrn.exec (s)) return false
return True
}
Verifying search Keywords
function Issearch (s)
{
var patrn=/^[^ ' [email protected]#$%^&* () +=|\\\][\]\{\}:; ' \,.<>/?] {1} [^ ' [email protected]$%^& () +=|\\\] [\]\{\}:;‘ \,.<>?] {0,19}$/;
if (!patrn.exec (s)) return false
return True
}
function IsIP (s)//by zergling
{
var patrn=/^[0-9.] {1,20}$/;
if (!patrn.exec (s)) return false
return True
}

function CheckMobile1 (form)
{
if (Form.mobile.value > "")
{
var reg=/13[5,6,7,8,9]\d{8}/;
if (Form.mobile.value.match (reg) = = null)
{
Alert ("Please enter the correct mobile phone number!") ");
Form.mobile.focus (); return false;
}
}
return true;
}

Clear left and right spaces

var aa= ' 1 ASD 123 ASD! ‘;
Alert (Aa.replace (/(^\s*) | ( \s*$)/g, ""));

jquery method

Alert ($.trim ("AB C"));

The checksum of the URL,

OBJ: Data Object
Dispstr: Failed prompt content display string
function Checkurlvalid (obj, dispstr)
{
if (obj = = null)
{
Alert ("The Incoming object is empty");
return false;
}
var str = obj.value;

var urlpatern0 =/^https?:\ /\/.+$/i;
if (!urlpatern0.test (str))
{
Alert (dispstr+ "illegal: Must start with ' http:\/\/' or ' https:\/\/'!");
Obj.focus ();
return false;
}

var urlpatern2=/^https?:\ /\/([a-za-z0-9_-]) + (\.)?) * (: \d+)? +$/i;
if (!urlpatern2.test (str))
{
Alert (dispstr+ "port number must be a number and should be between 1-65535!");
Obj.focus ();
return false;
}

var urlpatern1 =/^https?:\ /\/([a-za-z0-9_-]) + (\.)?) * (: \d+)? (\/((\.)? (\?)? =?&? [a-za-z0-9_-] (\?)?) *) *$/i;

if (!urlpatern1.test (str))
{
Alert (dispstr+ "illegal, please check!");
Obj.focus ();
return false;
}

var s = "0";
var t = 0;
var re = new RegExp (": \\d+", "IG");
while (arr = re.exec (str))!=null)
{
s = str.substring (Regexp.index+1,regexp.lastindex);

if (s.substring (0,1) = = "0")
{
Alert (dispstr+ "port number cannot start with 0!");
Obj.focus ();
return false;
}

T = parseint (s);
if (t<1 | | t >65535)
{
Alert (dispstr+ "port number must be a number and should be between 1-65535!");
Obj.focus ();
return false;
}
}
return true;
}

</script>

JS-EL Regular expression