online whiteboard tool

Starter: personal blog, update error correction replyis the tail of this blog post yesterday, the use of Socket.io library practice, the finished address here.The code has been uploaded to GitHub, the portal. You can open two browsers to see the effect.The practical significance is that two people online communication when said do not understand, then there is a whiteboard is good, both can write and draw

The function of electronic whiteboard and courseware is a necessary function in the online teaching system, this article introduces how to realize the basic function of electronic whiteboard based on OMCS, and the function of courseware: Uploading courseware, playing class, courseware paging, courseware synchronization, deleting courseware and other advanced func

! "); return""} m= M.split ("."); if(M.length > 2) {M ("Please enter a valid" + N + "binary number! "); return"" } if(M.length = = 1) {m= M[0]; vart = 0, c = 1; for(varx = m.length-1; x >-1; x--) {T+ = c *(A.indexof (M.charat (x))); C*=N}returnT}Else { varM0 = m[0]; vart = 0, c = 1; for(varx = m0.length-1; x >-1; x--) {T+ = c *(A.indexof (M0.charat (x))); C*=N}varM1 = M[1]; vard = 0, c = 1/N; for(varx = 0; x ) {D+ = c *(A.indexof (M1.charat (x))); C/= N } returnT +D

http://www.atool.org/httptest.php===========================How does IOS fade out of the boxThe hint box that needs to disappear is the view[UIView animatewithduration:1.f animations:^{ View.alpha = 0.F; }];Duration parameter is the time, how long disappears-----------------------------------+(void)showMessage:(NSString *)message{UIWindow * window = [UIApplication sharedApplication].keyWindow;UIView *showview = [[UIView alloc]init];showview.backgroundColor = [UIColor blackColor];showvi

Several related websites and downloads are provided: Generate favicon. ICO address online: Http://www.chami.com/html-kit/services/favicon/ There are 6 online tools: Http://www.chami.com/html-kit/services/ Favicon from PICs // This is the online generation of the favicon. ICO icon, submit any image, it will generate an ico file for you, And package and download

Tags: www sch contains lan Linux usr hang strong andPick to: This paper describes the problemof MySQL DDL , thept-online-schema-change of the work principle , and the actual use of The pt-online-schema-change tool modifies the 160 million-level data table structure on-line in the production environment. in a software life cycle, we all know that the design of t

Pt-Online-schema-change of MySQL online DDL Tool MySQL DDL:DDL is a feature that makes all MySQL ddbas criticized, because in MySQL, when dDDL is performed on a table, it locks the table. When the table is small, such as less than 1 W rows, it has little impact on the front-end, if tens of millions of tables are encountered at that time, the front-end application

Traditional code-sharing tools Jsbin and JsfilddleJsfiddle and Jsbin may be the first and most commonly used code in front-end development "play" tool, with a large number of fans and users, as a front-end development Siege division, I personally used to use.However, as a foreign service and products, loading speed is very incomprehensible, often half a day loading, such as:And the most important thing is that a lot of CDN reference js/css from Google

Development Tool series (1): Btrace-Online Debug toolBtrace Btrace is used to debug a running system and does not pause the system during debugging. It is particularly suitable for tracking online problems. You can monitor the call of any method in a system in real time. you can know the parameters and returned values of these methods, and how long the method cal

URL Address: https://color.adobe.com/zh/create/color-wheel/Editor's pre-language:Many just start to write Web page rookie, do not know how to match the color, just at the beginning, I was the same.In order to better match the color. Let's talk about the color of HTML CSS in addition to things.1. Web page selection of several colors is better?Web page We generally choose not more than 7 colors, more than the page style is not control, at least not less than 3 kinds, otherwise too monotonous. Our

GitHub has officially announced the release of Gh-ost:github's MySQL no-trigger online Change table Definition tool in open source mode!Gh-ost was developed by GitHub in recent months to address a frequently encountered problem: changing product requirements constantly require changes to the MySQL table structure. Gh-ost changes the structure of the online table

Recently saw a lot of friends are looking for easy to use the online PDF to Word tool, here to recommend a good PDF into Word tool site: simple online PDF converted to Word (http://online.easy-pdf-word.com). This is a very useful online conversion PDF Document w

May 28, Baidu Double outside the chain of tools to upgrade the new online, "Outside the chain analysis rejection tool in today's double swords, gorgeous upgrade." After the upgrade of the external chain analysis tool can support the bulk rejection of the chain and revocation of rejection and other management, this is the opening of the entire network outside the

Scarecrow Convenience tool is an aggregation of high-quality software supporting software, its support of online music, optimize the computer, Screenshots high-definition screen, notepad and other functions. Let's take a look at the "online music" feature of the Scarecrow Convenience tool.

information on how to import Ssl.key and ssl.crt into Apache, see:Import of Apache server certificatesthe generation of CSRIn the past, the generation of CSR mainly depended on the use of the Web server, various Web servers have their own generated CSR generation tools, to master the different server's CSR generation method, become quite cumbersome.Now you can request the CSR file and the private key file (text format) by using the online CSR generat

Today, this article recommends 10 very useful online CSS3 code generation tools that can help you create CSS3 effects easily. CSS3 is an improvement and enhancement to CSS specifications, with many powerful features such as rounded corners, rotations, shadows, gradients, and animations that make it easy for web developers to add fashion to their web sites. There are a lot of things that need to be written in JavaScript before, and now it's just a few

achieve this interception, so want to go online to find there is no related to the idea of implementation, but the online there is, but their production idea is: through the width of your request, Then let the picture only in the area coincident with the display, the other place is hidden, but this method is not the real sense, but a kind of deception of your vision, so you think you have already acquired

Sometimes we need to test some snippets of code, and the computer doesn't have a running environment for that language, and you can test them online.This article brings you 8 very useful snippets of code online tools to help you quickly and easily test and edit snippets.1. IdeoneIdeone is an online code editing and debugging tool that allows developers to compile

8 online testing tools for best code snippets. Sometimes, we need to test some code snippets, but the computer does not have a runtime environment for the language. it doesn't matter. you can test them online. This article brings you eight very good ones. sometimes we need to test some code snippets, but the computer does not have a runtime environment for the language. it doesn't matter. you can test them

Summary Get ready PHP environment settings Principle System mode EXEC mode Source Core Full code indexphp callpyphp Temppy Demonstrate Home Prompt information Brief test Run wait Advanced Testing Error hints Summarize Summaryyesterday, a whi