JavaScript

1. Function expressionvar function = function () {function body};2. Recursionfunction factorial (num) {if (numelse {return num*factorial (num-1);}}Arguments.callee is a pointer to the executing function, so you can use it to implement

In the first chapter of JavaScript advanced programming, you divide JavaScript into three parts.So the fact that the DOM and the BOM are two separate parts, the communication between them is through the function interface between each other, so that

Event model bubbling Event (bubbling): The event is passed from the leaf node up to the root node along the ancestor node Capture-type event (capturing): from the topmost element of the DOM tree to the most precise element, as opposed to

Summary:Baidu Encyclopedia is the introduction of two-dimensional code: two-dimensional code (Quick Response code), also known as two-dimensional barcode, it is a certain pattern of geometry in the plane (two-dimensional direction) distribution of

JavaScript to implement twitter puddles algorithm instance, twitterpuddles Today I found a very interesting algorithm question. The following is a description of its algorithm, which is derived from a twitter interview question. Twitter puddles

Example of a simple Javascript Promise mechanism in nodejs, nodejspromise Promise/deferred is A good specification for processing asynchronous call encoding. The following uses nodejs code as A class to implement A simple implementation of promise/A

Node. js allows you to share games where multiple users move their mouse online at the same time. node. JS is online at the same time. Recently, due to project requirements, I have studied nodejs's websocket implementation, socket. io, which is a

We recommend nine cool jquery-based page effects and nine jquery page effects. 1. Switch between left and right scrolling images with buttons Based on jquery The image rolling switching code for jquery with buttons is a special effect code for

Javascript scroll bar The implementation principle of the scroll bar has a lot to do with the drag in the previous article. The slide bar is implemented by dragging and calculating the drag range of the slide bar to get a proportional scale, this is

Xml to json format function xmlToJson(xml) { // Create the return object var obj = {}; if (xml.nodeType == 1) { // element // do attributes if (xml.attributes.length > 0) { for (var j = 0; j Eg: A.

JavaScript data type judgmentJavaScript data types are divided into two types: the original type (basic type) and the object type (reference type ). The primitive types include numbers, strings, and boolean values. There are two special primitive

Summary of 10 key habits of JavaScript developers With the continuous development of new technologies, JavaScript is no longer just a network language. Now we can see a lot of mobile phones that use JavaScript to build Web applications based on

Analysis of Ajax cross-origin principle and implementation analysis in JQueryThe emergence of AJAX allows the web page to be refreshed locally by performing a small amount of data exchange with the server in the background. However, for security

Analysis of currying in JavaScriptCurry: the name of the source and mathematician Haskell Curry (the programming language Haskell is also named by him ). Curialization is also called partial evaluation. It means to pass parameters to the function

Node. js asynchronous programming and node. js asynchronous programming Currently, a large number of asynchronous operations are required, and actual pages are more and more inclined to be single-page applications. Backbone, angular, knockout and

Jquery implements Dynamic Circle and jquery dynamic Today, I found a good knowledge in writing plug-ins. I made a small example myself. Copy codeThe Code is as follows: untitled document

JQuery is not compatible with the process of solving the change event of input, jquerychange A recently developed project needs to automatically calculate the sum of the total INPUT values in multiple INPUT boxes in the WEB form and display them in

JQuery front-end framework easyui uses Dialog for bug handling, jqueryeasyui I have been using the easyui front-end framework to develop and design the UI recently. However, when using Dialog, I find that if there are many page content, there will

Simple Web page capture function example implemented by Node. js: node. js capture Today, web page capturing is a well-known technology, but there are still many complexities. Simple Web crawlers are still not competent for Ajax round training,

Introduction to the implementation principle of RPC (Remote process call) in node. js, node. jsrpc When I first came into contact with RPC (Remote process call), I was able to locally call the method of the Program on the remote host. I saw a simple