how to validate ssn

Regular expression to validate numbersVerification Number: ^[0-9]*$To verify N-bit numbers: ^\d{n}$Verify that at least n digits: ^\d{n,}$Verify the number of m-n bits: ^\d{m,n}$Verify numbers starting with 0 and non 0: ^ (0|[ 1-9][0-9]*) $Verify that there is a positive real number with two decimal places: ^[0-9]+ (. [ 0-9]{2})? $Verify that there is a positive real number with 1-3 decimal places: ^[0-9]+ (. [ 0-9]{1,3})? $Verify non-zero positive in

thinkphp form Auto-validate function, thinkphp form verification Last night, our boss asked me to get the form of automatic verification function, sorrow for a long day borrowed a lot of knowledge of the official website, just out, eh, to share my own results! Thinkphp in the model base class for us to define the function and regular expression of auto-validation, we just need to build the $_validate attribute under the model class of the correspondi

https://oj.leetcode.com/problems/validate-binary-search-tree/http://blog.csdn.net/linhuanmars/article/details/23810735/***definitionforbinarytree*publicclasstreenode{ *intval;*TreeNodeleft; *treenoderight;*treenode (int NBSP;X) {val=x;}*}*/publicclasssolution{ publicbooleanisvalidbst (treenoderoot) { // a BST requirement // left Tree also BST, left Max less current value // Right tree also BST, right minimum greater current value if (root==nu

jquery is very handy for now.First you should understand a question:Who is the parent element of Of course, if you don't see it, we can use a Chrome browser to make it look true; Lt;script src= "Assert/jquery.validate.min.js" >　　This is what happens after this operation.First explain the following:This is my own add, my Learning to build the document directory is as follows:You can see that this is the style of validating success and failure,1 input.error{border:1px solid red;}2 labe

In real-world development, it is impossible to verify the Easyui verification option when the AJAX submission form is encountered, which is very disturbing to the actual user experience. Of course, this is also a matter for granted.Workaround: Use the Ajax Beforesend event in jquery (which needs to be used in conjunction with the Easyui framework), for example:submitform:function (Formid,url) { var formData = $ (formId). form (' getValues ');//Get form data $.ajax ({ type: ' POST ', ur

Town Field Poem:The Pure Heart sentiment wisdom language, does not have the world name and the benefit. Learn water under the hundred rivers, give up arrogant slow meaning.Learn to have a small return to feed root, willing to cast a conscience blog. Sincere in this writing experience, willing to see the text to inspire.——————————————————————————————————————————Code　　From tkinter Import *root = Tk () def test (): If Inputstr.get ()! = ' House of Fame and Fortune ': judgeres.set (' input is not a

ApplicationContext GetContext () {return context;}public static String Validatemodel (Object obj) {//Validates an objectStringBuffer buffer = new StringBuffer (64); Used to store the error message after validationValidator Validator = Validation.builddefaultvalidatorfactory (). Getvalidator ();set. validate (obj);//Validation of an object, in fact, you can only verify that one of the properties of theiterator. iterator ();while (Iter.hasnext ()) {Str

Site backstage with the jquery validate framework, the version is jquery Validation Plugin 1.8.1Because it took a long time, the new version has not been updated.Recently the Company Information entry staff have adjusted, no IE11 browser, using IE8 error, error location as follows:No. 688 Line error: name is null.Find a lot of information, finally find the right solution as follows, found in the Jquery.validate.js file elements method, originally comm

Validate Form Validation extension rulesAdd a custom testAddmethod:name, method, message Extended Validation rulesMailbox Form Validation rulesJQuery.validator.addMethod ("Mail", function (value, Element) {var mail =/^[a-z0-9._%-][email protected] ([a-z0-9-]+\.) +[a-z]{2,4}$/;return this.optional (Element) | | (Mail.test (value));}, "The mailbox format is not correct");Phone verification RulesJQuery.validator.addMethod ("Phone", function (value, E

Let's briefly introduce the js code. For more information, see the source code of the above example:$ (Document). ready (function (){ JQuery. validator. addMethod ("phonecheck", function (value, element) {// add a phonecheck method to customize check rulesString = value. match (/0 (\ d {2})-(\ d {7})/ig );If (string! = Null ){Return true;} Else {Return false; } }, "Telphone number like 021-1234567 "); JQuery. validator. addMethod ("phonesame", function (value, e

JQuery Validate UseScriptsrc= "Js/b/js/jquery.validate.js">Script>styletype= "Text/css">Input.error{Border-color:#a94442!important;Box-shadow:inset 0 1px 1px rgba (0,0,0,.075), 0 0 8px #a94442!important;}Label.error{Padding-left:16px;Padding-bottom:2px;Font-weight:Bold;Color:#EA5200;}When the form is submitted, it will verify itself;JQuery Validate Use

if (! Modelstate.isvalid) { //todo model validation failed to do}The code above, whether in traditional ASP. NET or New generation ASP. NET core, is to verify that the state of the model is legitimate, and if the value of the IsValid property is true, the validation succeeds. This kind of code is generally written in the first place in the action method, and if you write such a judgment in each action increases our workload and the repetition, in this article we will discuss how to automate m

Self-organizing a few jquery. Validate Verify the Regular:1. Enter only numbers and letters /^[0-9a-za-z]*$/gJQuery.validator.addMethod ("Letters", function (value, Element) { return this.optional (Element) | |/^[0-9a-za-z]* $/g.test (value);}, "Only enter numbers and letters!");2. The quantity must be a positive integer /^\+?[ 1-9]\d*$/JQuery.validator.addMethod ("Count", function (value, Element) { return this.optional (Element) | |/^\+?[ 1-9]

This technique is very useful. If we have multiple controls, we validate it with only one validation control. This reduces page size and improves performance because each validation control is rendered as span on the client, and if a page contains hundreds of controls, it can make the page very bulky. In the demo of this article, a few of the dynamically created textbox, I use only one validation control to valid