JavaScript

Javascript cross-origin is one of the most common problems for web developers. The so-called js cross-origin problem refers to the Access to Data Objects in another different domain through js on a page in one domain. For security consideration,

  When reading the following code, we will find that all the Dom operation functions call the domManip function.   Append: function (){ Return this. domManip (arguments, true, 1, function (){ This. appendChild (); }); }, Prepend: function (){ Return

Function getLocation (elm ){If (elm. createTextRange) {// IEVar range = document. selection. createRange ();Range. setEndPoint ('startstart', elm. createTextRange ());Return range. text. length;} Else if (typeof elm. selectionStart = 'number') {//

Another way to avoid invalid data is to block invalid input when users enter data. For example, when users enter bank card numbers, users must enter numbers, if you enter a non-numeric character, a prompt is displayed. The following code is provided:

InnertHTML is the w3c standard specification, which can obtain content including tags.For example:Aaa dadsa Alert (document. getElement ("d"). innerHTML );Display:Aaa dadsa InnerText and IE are not supported. You can remove the html Tag and retrieve

In JavaScript, The toString () method and the alueOf () method are used to convert an object to a basic data type or string.   When converting an object to a string: 1. Call the toString () method of the object to convert the object to the returned

IDValidate. js /*** ID card 15-bit encoding rule: dddddd yymmdd xx p* Dddddd: Location Code* Yymmdd: Date of birth* Xx: sequence class encoding, which cannot be determined* P: gender. The odd number is male and the even number is female.* * ID card 1

// Web games: guessing Insert title here From Dai junjian's column

// Html Register.html User Registration User name: password: Confirm Password: ID card number: phone number: Email: enter the user name enter the password enter the password again enter your id card number enter the

BasicsJavascript: ObjectObjects we have briefly introduced before. They are a type of object that aggregates multiple data values in one unit and uses names for access. They are a disordered set of attributes.1. Several ways to create objectsVar

[Javascript]// JavaScript DocumentVar checkObj = {/** data verification class **/CheckFunc :{}, // set of function objects for data verificationErrorMessage: [], // error messageRightMessage: [], // correct messageShowInfoFunc :{}, // function for

In jquery, the operations of various controls on the cyclic page are often used. The commonly used cyclic operations are as follows: // All div labels whose id starts with weiguo _ on the cyclic page $ ("Div [id ^ = weiguo _]"). each (function

What is AutoComplete and use cases?AutoComplete: the AutoComplete Automatic Filling control of the text box, similar to the function provided by the Google search input box. Why is there such a function, because users are very lazy? Autocomplete,

Introduction to jquery. validate I haven't written JavaScript for several years, and the data is slowly organized and the format is also messy. Mainly divided into several partsJquery. validate basic usageJquery. validate API descriptionJquery.

1 # include 23 # define MAXN 1004 using namespace stbd;567 struct BTNode8 {9 char tag;10 BTNode * left;11 BTNode * right;12 };1314 class BTree15 {16 private:17 BTNode ** root;18 void BuildBTree (BTNode ** root );1920 public:21/* recursive version */2

When filtering, we can find the jQuery object corresponding to a dom object from the jQuery object that contains one or more dom objects.1,$ ("P "). eq (-2) Select the jQuery object corresponding to the last and second p elements from the searched p

Recently, some of the differences have been discovered in Javascript research. It is a bit speechless, for example: Alert (typeof (NaN = NaN); // The result is false. Alert (typeof (NaN! = NaN); // The result is true. Hey, of course, this article is

Today's blog post focuses on the encapsulation in javascript. The content of this article comes from "pro javascript design patterns" (if you are interested, you can go directly to the next article) and your understanding of this issue.This article

// Inheritance in javascript-first Inheritance Method: Object impersonatingFunction Parent (name){This. name = name;This. getInfo = function (){Document. write ("Father's name is:" + name + " ");}}Function Child (name, age){// This is the most

Javascript Object-Oriented Programming (II): inheritance of Constructor Author: Ruan YifengThe first part of this series describes how to "encapsulate" data and methods, and how to generate instances from prototype objects.Today, we will introduce