heatmap js

JavaScript is an object-based and event-driven, security-based scripting language that is widely used, not just web pages, and not trapped by JSP. Based on the object, that is, you do not need to specify the type of the variable, you give him a 3, it knows the integer, if given a value of ' 3 ', it will know is char. Event-driven, that is, click on the event to drive it. JavaScript Advantages: Web Interactive, simple and easy to use. JS is mainly ba

First download the following file (this is a piece of code that someone else wrote to parse the JSON) and introduce the file! Http://pan.baidu.com/s/1dD8qVr7 Now when we need to use Ajax to interact with the background, how to transfer the PHP array to the JS file and JS identified? First look at the php file, when we get to $arr this array foreach ($arr as $value) { $json. = Json_encode ($va

Get started with Node. js development-access the external world with http and access with node. js Node. jsHttp ModuleYou can not only build servers, but also access other servers as client class libraries. The key lies in two methods: Http. request (options [, callback]) Http. get (path [, callback]) Besides httpFileSystem ModuleAndStreamStream. Readable and stream. Writable. Let's take a look at the

Three. js is a great open-source WebGL library. WebGL allows JavaScript to operate on GPUs and implement 3D in the browser. However, this technology is still in its development stage, and there is a shortage of materials. Fans should learn it through the Demo source code and the source code of Three. js.Aerotwist.com has six simple tutorials. I try to translate them and share them with you.I used Three. js

15 latest js libraries to enhance your Web experience and js Library web experience1. Pikaday: Standalone JavaScript Datepicker This is a refreshing JavaScript date Selector Lightweight (compressed and less than 5KB after gzip) No dependency on other JS frameworks (but can be used with Moment. js) Modular CSS class

Tagged with: GPO href = = Val tde blog meaning mit ack1. Function of return in JS event handler-answercard-Blog Park. HTML (https://www.cnblogs.com/answercard/p/5255230.html)2, the content of the website to save:The return in this includes some knowledge of the details:For example: The difference between onclick= ' return Add_onclick () ' and onclick= ' Add_onclick () 'When JavaScript calls a function in an event, the return value is actually set to W

When I wrote the front-end HTML page of the Windows application yesterday, I found a strange problem, a simple JS code, actually executed the error.function Replacesymbol () {var val_exp = $ (' #calc_expression '). Val (); alert (val_exp); Val_exp=val_exp.replace (/(/g, ' (') Replace (/)/g, ') '). Replace (/x/g, ' * '). Replace (/÷/g, '/'); alert (val_exp); $ (' #calc_expression '). Val (val_exp);The code is simple, that is, replacing the special char

Reprint address: http://hi.baidu.com/xxq8210/blog/item/f9d82424d77dad0b4d088dbc.html JS cross-domain access: JS variable scope 2009-09-12 17:14 Each language has the concept of a variable, which is an element used to store information. For example, the following function: 1function Student (Name,age,from)2{3 this.name = name;4 This.age = age;5 This.from = from;6 this. ToString = function ()7 {8 r

Objective In the actual project development, we often need three-level linkage, such as provincial urban choice, commodity category three classification of choice and so on. But the internet can not find a complete code, powerful, using a simple three-level linkage menu, mostly just a simple talk about the realization of ideas. Here's a list of three cascading code that I've encapsulated in my work and used in my project, and I'd like to welcome you to the wrong place. Simple to use (one lin

Node. js has gradually warmed up, and many friends have begun to pay attention to it. However, on Windows platforms, Cygwin-based installation and configuration environments are required, which can be discouraged by many users. However, it is reported that Microsoft has contacted the Node. js official website and I believe it will be improved soon. If Cygwin is not installed, can I build a Node.

I have done many projects before, but I have never looked at js file caching. Recently, I finally jumped into this big hole without consciousness. My work in recent months is a continuous improvement project for the trading system. The iteration release cycle is about 2 ~ 3 weeks. The last iteration was V16, which was released on Wednesday. Unfortunately, the boss caught him the next morning. The boss found a bug in production. The general problem is

Convert js timestamp to date format. Convert js timestamp to date format. Unix timestamp: Unix timestamp, or Unix time, POSIX time ), it is a time representation, which is defined as the total number of seconds from January 1, January 01, 1970 to GMT. Unix timestamps are not only used in Unix and Unix-like systems, but also widely used in many other operating systems. Currently, a considerable number of ope

Js Code alternative hijacking login form, js alternative hijacking form Where is the alternative? In other words, an external js is provided on the page to hijack the login function, and I can modify the js below it (the only one, and it is useless ). The Code in that js u

Example code of a project class written based on three. js, sample code of three. js WebVR Before starting, we will introduce WebVR. WebVR is an experimental Javascript API that allows HMD (head-mounted displays) to connect to web apps, the location and action information of these devices are also accepted. This makes it possible to develop VR applications using Javascript (of course, many API interfaces ha

Detailed description of tween. js Chinese user guide and tween. js User Guide Animation is a concept that allows you to smoothly change the attributes of an object. You only need to tell it which attributes need to be changed, what final values should they have when the population ends, and how long it will take, the replenishment engine calculates the value from the start point to the end point. For exampl

Share my thoughts on JS plug-in development and my thoughts on js plug-ins Read the following contents: • Cause• How to Develop a lightweight plug-in with strong Applicability• Conclusion Cause If you have done some front-end development work at ordinary times, you will have the following experience: When the page needs some effect or plug-in, we generally have two options: 1. Search for relevant

After you install node. js, choose a beneficial IDE for your development.After comparing multiple Ides, it is positioned on webstrom and sublime.There is a simple comparison:Webstorm feature is very rich, the front-end development tool of the synthesizer, compared to sublime slightly heavierSublime plug-in is also very rich, the interface is more beautiful, very light, also has a simple project management functionHere you choose to use sublime as the

Cocos js java interdebugging (how to use JS to directly call JAVA on the ANDROID platform), cocosandroid Added a new feature in cocos2d-js 3.0beta. on android, we can call java's static method directly in js through reflection. It is easy to use: var o = jsb.reflection.callStaticMethod(className, methodName, methodSign

Recently because the work needs to do a JS auto-import plug-in, a very naïve to start with the dynamic creation of a script added to the head is OK, after trying to find the problem, that is, if the introduction of a number of JS files, and the latter a file used in the previous file variables, it will error, rely on ~ ~ Sad urge, that is, JS if dynamic loading (

This article focuses on the definition and description of node. js, as well as 10 scenarios for node. js to let you know where node. js can be applied, and now let's look at this article. First we need to know what node. js is? What is node. js (actually learning Web server