username validation in javascript

First, javascript: Code:function filter(){this.isvalidurl = function(data){ if(/^((http|ftp|https):\/\/)?[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%:\/~\+#]*[\w\-\@?^=%\/~\+#])?$/.test(data)){ return true; }else{ return false; }}this.isvalidemail = function(data){ if(/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/.test(data)){ return true; }else{ return false; }}this.isvalidtel = function(data){ if(/^(13[0-

JavaScript validates content as a number and a simple instance with a length of 10 Above this JavaScript validation content is a number and a simple example of length 10 is a small series to share all the content of everyone, hope to give you a reference, but also hope that we support the cloud habitat community.

Native JavaScript phone number verification, email verification, id verification. When used, pass in the string to be validated, return ture to represent conformance, return false code does not conform.Use: document.getElementById ("Btnphone"). Onclick=function () { alert (Validationhandler.isphone ( document.getElementById ("Phoneinput"). Value) ==true? " Legal ":" Illegal ") }; document.getElementById ("Btnemail"). Onclick=function () {

1Emailnamereg:/^ (([a-za-z0-9]+\w* (\.\w+) | ( -\w+)) *[\.-]? [a-za-z0-9]+) | ([a-za-z0-9])) $/,//Match mailbox Name2Emailreg:/^ (([a-za-z0-9]+\w* (\.\w+) | ( -\w+)) *[\.-]? [a-za-z0-9]+) | ([a-za-z0-9])) \@[a-za-z0-9]+ ((\.| -) [a-za-z0-9]+] *\. [A-za-z0-9]+$/,//Match Mailbox3Mobilereg:/^1[3,4,5,7,8][0-9]{9}$/,//Match Phone number4Passwordreg:/^\s{1,20}$/,//match password matches all non-whitespace5Numberreg:/^[0-9]*$/,//Match Numbers6Vcodereg:/^[a-za-z0-9]*$/,//Matching graphics Verification c

In B/S Program During design, you often need to enter a date or time in an input box and verify whether the input is valid. The common verification method is to perform string verification during submission. If it is a valid date, it will be submitted normally; otherwise, the submission will be canceled and an error message will be given. Alternatively, you can change the date and time input to several drop-down lists. The user selects year, month, day, hour, minute, and second. A

Email: JavaScript form Validation-Mailbox verification

Verify IPfunction IsIP (ipstr) {var reg =/^ (\d{1,2}|1\d\d|2[0-4]\d|25[0-5]) \. ( \D{1,2}|1\D\D|2[0-4]\D|25[0-5]) \. (\d{1,2}|1\d\d|2[0-4]\d|25[0-5]) \. (\d{1,2}|1\d\d|2[0-4]\d|25[0-5]) $/g;return Ipstr.match (reg);}The regular verification of this URL is comprehensive, it verifies that the situation includes IP, domain name, FTP, level two domain name, the domain name of the file, domain name plus port! User name, etc. informationfunction Isurl (str_url) {var Strregex = ' ^ ((https|http|ftp|rts

onsubmit= "return Checkform (This)" Name= "form">Receivemobile:id= "Receivemobile">Count:Email:Address:System milliseconds (can do the PK of the data table):String Timemillis = string.valueof (System.currenttimemillis ())text box prompt Input:Onblur= "Javascript:if (this.value==" | | this.value==0) this.value= ' 1~9999 '; " >jquery Common function Definitions:$ (function () {$ ("#btnSubmit"). Click (function () {$ ("#form"). Submit ();});});JavaScript

Form form onsubmit= "return Checkform (This)" name= "form" >In the input tag inside the name corresponding (name password age (int) email) can be such as: class= "Inputgri" name= "email c2> "/>JavaScript basic Form Validation

Today has been tossing for a while, finally can. Share a bit. Oh Classic.. JavaScript and regular expression validation must be integers and retain three decimal places ...

I used to use eclipse to install a myeclipse application. Invent a lot of questions. One of the most salient of these is save the time when saving files always verifies a lot of equipment. This is the longest to verify JS. and will always pop up a verification box to remove MyEclipse- Validation-javascript Validator's manual and build are useless. Finally, you find some authentication information for the d

A JavaScript Regular Expressions1.EXEC retrieves the value specified in the string, returns the found value, and determines its location2.test retrieves the value specified in the string, returning True or false3. Creation of regular expression objects:(1) Mode one:Var rgex=new RegExp ("[0-9]", "mode");(2) Way two: simple notation, with double slash//to enclose the contents of regular expressionsExample 1 (regular creation, using the test () method):O

The Recent validation of JavaScript data types has a new understanding that can be judged so simple and comprehensive. We have customized methods such as Isstring,isnumber, IsDate, IsError, Isregexp, Isboolean, IsNull, isundefined, IsObject, etc. Now show yourself the JavaScript data type validation functions and tes

javascript| Form Validation | dynamic | function ' Please dump it for checkform_js.asp use '***************************************************************************** ' Function name: Checkform_js (FRMNAME,ERRSTR) ' Function: Dynamically write JavaScript Form validation functions using ASP Checksubmit () ' Use meth

address entered is correct * ENTER: STR String * Returns: TRUE or Flase; True indicates a well-formed/function Checkip (str) {var arg =/^ (\d{1,2}|1\d\d|2[0-4]\d|25[0-5]) \. ( \D{1,2}|1\D\D|2[0-4]\D|25[0-5]) \. (\d{1,2}|1\D\D|2[0-4]\D|25[0-5]) \. (\d{1,2}|1\d\d|2[0-4]\d|25[0-5]) $/; if (Str.match (arg) = = null) {return false; else {return true; }/** * Check that the URL address entered is correct * ENTER: STR String * Returns: TRUE or Flase; True indicates a well-formed/function Checkurl

about form validation, it is best to use regular expressions, of course, if the simple do not bother to write regular expressions, in general, use the Internet to search a lot of regular expressions, all kinds of, everything, The following example is a sample of JavaScript validation input decimal values: function Isfunkey (code) {//8--> backspace//--> end// ; ho

javascript| Script Here are a few useful JavaScript validation scripts, the following is a code snippet for your reference. function Isnum (num,low,hi) {if isNaN (num) | | num

JavaScript form Programming: How to find a FORM element: 1.var Oform=document.getelementbyid ("Form1"); 2.var oform=document.forms[form1]//through name lookup; Two. Common features of form fields: Disabled: This property is used to indicate whether a form control is available; Form property: This property returns the form that contains the field; Blur (): This method causes form fields to lose focus; Focus (): This method causes the form field

Native JavaScript phone number verification, email verification, id verification. When used, pass in the string to be validated, return ture to represent conformance, return false code does not conform.Use: document.getElementById ("Btnphone"). Onclick=function () { alert (Validationhandler.isphone ( document.getElementById ("Phoneinput"). Value) ==true? " Legal ":" Illegal ") }; document.getElementById ("Btnemail"). Onclick=function () {