zip code validation in javascript

JavaScript method to verify, of course, if the simultaneous use of 2 ways to verify the most insurance, but (Khan ...). We are tired of the programmers:) This explains the 2 ways in which form validation is made, and the following is the concept of dynamically generating JavaScript. Why do you want to generate it dynamically? Because this kind of client authenti

JavaScript Data Validation Class/*JavaScript: Authentication class Author: Yang Bo date:201603231, User name authentication 2, password Authentication 3, repeat password verification 4, mailbox verification 5, mobile phone number verification 6, Verification code verification*/varYb_validate =function(){ //User Name

Try testing the following form with valid and invalid email addresses. The Code uses JavaScript to match the users input with a regular expression. Function code: Copy Code code as follows: function Validate (Form_id,email) { var reg =/^ ([a-za-z0-9_\-\.])

, // modify it hereSuccess: false,AlidationEventTriggers: "keyup blur", // A keyup is added here, that is, the verification is triggered when the keyboard is pressed.PromptPosition: "topRight", // There are five modes: topLeft, topRight, bottomLeft, centerRight, bottomRightFailure: function () {callFailFunction ()}}) 5. Ajax verification. Well, here is the problem. Before analyzing the problem, let's take a look at how the main Javascript file of

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

12 ", commissioningWhy do you want to debug?1. When writing JavaScript, it would be painful to have no debugging tools.2. It is difficult to write JavaScript programs without Debugging tools.3. The code you write may contain syntax errors, logic errors, and if you do not use debugging tools, these errors are difficult to discover4. Help locating the error message

Form validation is a user experience optimization that detects invalid data and marks these errors for end users. The following is a display of the browser's own validation features can also be viewed on the mobile side: HTML section: CSS section: fieldset{border:0} . MyForm. form-control{ Display:block; padding:5px; width:100% } . MyForm input:focus:invalid +. form-erro

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 limits the input of only numbers, determines the value of Event.keycode, and limits it to only numbers, if not numbers, returns an error, and if it is a number, continue. Let me first show you how to verify that JavaScript is a number another way, by using the following functions: function Isnumber (onum) { if (!onum) return false; var strp=/^/d+ (/./d+) $/; if (!strp.test (Onum)) return false; t

Learning from scratch _ JavaScript _ series (8) -- js series (2) (event trigger sequence, text reading, js compiling ajax, input validation, and down menu) (20) event trigger sequence If there are multiple scripts in the document (for example, automatically executed scripts), they are executed in a certain order (in the HTML document ): ① Execute first The output is green, and the background color turns gr

The use of client-side validation can effectively reduce the number of data to and from the server and the client, is conducive to improving the server's resource utilization, and can also give users intuitive, fast response. This is especially important in the Web 2.0 era, and I think you must be as annoying as I am with the basics of JavaScript writing annoying valida