heatmap js

The JS plug-in plupload. js implements Multi-graph upload and displays the progress bar. The plupload. js multi-graph This article provides examples to share with you the specific code of plupload. js multi-graph upload for your reference. The specific content is as follows: HTML code: PHP code: The above is all the

10 best free JS frameworks and JS library recommendations, js frameworksToday we focus on some JavaScript frameworks that are useful to web developers and designers. JavaScript is a client scripting language, which is the most popular in Web Front-end development. List the best JS frameworks and libraries in this list,

JS's lazy declaration, JS in the declared variables (pre-interpretation), after the will not be re-declaredfn(); // 声明+定义 js中声明过一次的变量,之后在不会重新声明了function fn() { console.log("ok")}fn(); //okfn = 22; //赋值是允许的fn(); // Uncaught TypeError: fn is not a functionfunction fn() { console.log("ok !!!");}fn(); //Uncaught TypeError: fn is not a function[Js]js's lazy declar

JS highlightingfunction Highlight () {if ($.trim (' #pscws '). val ())! = ") {var url = $ ("#analysis_url"). Val ();$.ajax ({Url:url,data:{words:$ (' #pscws '). Val ()},DataType: ' JSON ',Type: ' POST ',Success:function (JSON) {if (Json.status = = 1 json.data.length > 0) {var _key_word_str = json.data.join (' | '); /array group of words to be replaced a regular way$ (". sevent li strong>a,.sevent li tldwords>em"). each (function () {var html=$ (this)

I. Flow of eventsThe event flow describes the order in which events are accepted from the page.The event stream of IE is the event bubbling stream, and the Netscape event stream is the event capture stream1. Event bubblingEvent bubbling, that is, the event is initially received by the most specific element (the node with the deepest nesting level in the document) and then relayed up to the least specific node (document).2. Event CaptureThe idea of event capture is that less specific nodes should

Div drag and drop made by multiple methods, which is simple and practical, including jquery method, js general method, js object-oriented method The Code is as follows: Drag

This article mainly introduces the simple js image rotation code (js image rotation). For more information, see The Code is as follows: Images

This article mainly introduces examples of js formatting time and js formatting timestamp. For more information, see The Code is as follows: /*** Format the time object;*/Date. prototype. format = function (format ){/** Eg: format = "YYYY-MM-dd hh: mm: ss ";*/Var o = {"M +": this. getMonth () + 1, // month"D +": this. getDate (), // day"H +": this. getHours (), // hour"M +": this. getMinutes (), // minute

Process Control for Loop +if Judging +math Object +array object +date object making score tableSummation Formulavar sum = 0;For (Var i=0;isum + = myarr[i][1];//alert (myarr[i][1]);//document.write (myarr[i][0]+ ' }//document.write (sum);document.getElementById (' Sum '). innerText = sum;Find Averagevar pjf = sum/myarr.length;document.getElementById (' B '). InnerHTML = Math.Round (PJF);Other small experiments that are immature and unsuccessful.//document.getelementbyid (' B '). InnerText = Math.

[Cocos2d-js tutorial] some common functions in cocos2d-js, cocos2d-js tutorial This article by qinning199 original, reproduced Please note: http://www.cocos2dx.net/post/223 1. cc. rectIntersectsRect (ra, rb) checks whether two rectangles are intersecting. If yes, true is returned. Use Case: Var rectA = cc. rect (0, 0, 5, 10 ); Var rectB = cc. rect (4, 9, 5,

Warning box for Bootstrap js plug-in (alert. js) and bootstrapalert. js Data-dismiss = "alert" -- add this attribute to the close button to enable it to automatically disable the warning box; . Fade. in -- add an animation when the warning box is closed; For more details, refer to the following example: Copyright Disclaimer: This article is an original arti

This article mainly introduces the method and code for starting the script file of node. js at startup. Here, I will share it with you. If you need it, refer to it. The Code is as follows: #! /Bin/bash### BEGIN INIT INFO# Provides: xiyoulib# Required-Start: $ all# Required-Stop: $ all# Default-Start: 2 3 4 5# Default-Stop: 0 1 6# Short-Description: Start daemon at boot time# Description: Enable service provided by daemon.### END INIT INFO# Chkconfig

Socket. IO is a websocket library, including the client js and the server nodejs. Official Address: socket. io uses socket. io and nodejs to build a websocket Server Socket. io can not only build the websocket service of the client, but also support the websocket of the nodejs server. Next let me introduce how to install and configure nodejs. Go to http://nodejs.org/javasdownloadto download the msifile. Always click next to install. The final file is

This article mainly introduces node. buffer in js. description of the fill method. This article introduces the buffer. fill Method description, syntax, receiving parameters, use instances and implementation source code. For more information, see Method description: Fill the specified data in the buffer. Syntax: The Code is as follows: Buffer. fill (value, [offset], [end]) Receiving parameters: Data to be filled by value The start positi

the function header. All functions are defined before use. Name constructors and callback functions as much as possible, so that you can see a clearer call stack during debugging. Try to define all member functions in the constructor through the prototype, define the attributes in the constructor, and then use the new keyword to create an object for the constructor. Avoid complex inheritance. If you want to inherit, use the inherits function in the util module whenever possible. For example

This article mainly introduces node. buffer in js. buffer. description of the isEncoding method. This article introduces the buffer. buffer. isEncoding method description, syntax, receive parameters, use instances, and implementation source code. For more information, see Method description: Checks whether it is a valid encoding parameter and returns true or false. Syntax: The Code is as follows: Buffer. isEncoding (encoding) Receiving parameters:

This article mainly introduces node. buffer in js. buffer. description of the isBuffer method. This article introduces the buffer. buffer. isBuffer method description, syntax, receiving parameters, use instances and implementation source code. For more information, see Method description: Checks whether the target is a buffer object. Returns true or false. Syntax: The Code is as follows: Buffer. isBuffer (obj) Receiving parameters: Objec

This article mainly introduces node. console in js. this document describes how to use the time method. time Method description, syntax, receive parameters, use instances, and implement Source Code. For more information, see Method description: Start Time, which corresponds to console. timeEnd and records the time period. Syntax: The Code is as follows: Console. time (label) Receiving parameters: The Label corresponds to the label of con

Nested div elements. If the parent and child elements are bound to some events, the parent element event may be triggered when you click the child element at the inmost layer, the following is an example of js blocking default events and js blocking event bubbling. For more information, see section 1. event. preventDefault (); -- blocks default events of elements. Note: The default event for clicking to jum

This article describes how to create a web calculator using node. js + express. For more information, see Environment: HOST: WIN10 Express installation: 1. Install express-generator Enter the following command: npm install -g express-generator 2. Install express Enter the following command: npm install -g express 3. verify whether the installation is successful Enter the command: express-V View help: express -- help Project Creation: express -e