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idea is to write the application scenario, and then describe the principle.Q:/api/v1/The app corresponds to the corresponding API version?A: This scenario is described in the article "dealing with version upgrade API". A simple description is the V2 version of the V1 version of the API, only rewrite the parts that need to be changed, a common model, in the API test document detailing the return content, as a comparison.Q: Is there a protocol that is more efficient than the HTTP protocol for app

Note: I recently sorted out the hard drive and found several notes I recorded when I learned Web Front-end technology. I think it is quite valuable, so I plan to sort them out one after another. Well, before talking about it, I would like to share with you a piece of the past to remind myself and everyone to grasp the knowledge points accurately. That was one year I went to my internship. When I took a company's written test, I had a question about w

?1. Use no semantic tags as little as possible: div and span2. When the semantics are not obvious, you can use either DIV or P, use p as much as possible, because P has the upper and lower spacing in the default case, which is advantageous to the compatible special terminal;3. Do not use the plain style tags: b,font,u,i,del, to use CSS settings.4. Need to emphasize the text, can be included in the strong or the EM tag (browser preset style, can be specified with CSS without them), strong default

In general, the JS code is more and more large, it is best to put it in a JS file,can be introduced via SRC, which is highly maintainable and cacheable (load once without loading)Features to facilitate future expansionCorrect wording:Error wording:If there is nothing in the double label, you can add it directly.Smooth degradation does not support js:The core of JS is EmascriptI. Grammatical compositionCase sensitiveAn identifier is the name of a varia

Returns an example of the first character position index of a matching string: varStr1= "Welcome to the world of js!"; varStr2=str1.match ("World"); varStr3=str1.search ("World"); Alert (str2[0]);//The result is "world"alert (STR3);//The result is----substring processing method x.substr (start, length)----intercept from index to start The length of the string x.substring (start, end)----intercepts the string from index start to index

Baidu 2016 internship in the front-end questions of the programming problem 2:excel address of the mutual conversionExcel is the most commonly used office software. Each cell has a unique address representation. For example, the 12th row 4th column is indicated as: "D12", 5th row No. 255 column is represented as "IU5".In fact, Excel provides two ways to address representations, and there is a notation calle

Struts learning path (2) Front-end OGNL trial, strutsognl1. Significance of the appearance of OGNL In mvc, data is transferred between different layers. This kind of circulation will face some dilemmas. These dilemmas are caused by the different forms of data in different worlds: A. the data on the page is a flat string with no data type. No matter how complicated your data structure is, how many data types

1*2*3 * ...... * 3000 How many zeros are at the end of the result of multiplication? 1 Public Class Countzerodemo { 2 Public Static Void Main (string [] ARGs ){ 3 System. Out. println (countzero (3000 )); // 748 4 } 5 Private Static Int Countzero ( Int N ){ 6 Int Count = 0 ; 7 Int J; 8 For

Before using SEAJS Modular development, directly on the page reference JS will be prone to conflict and dependency related issues, the specific problems are as followsIssue 1: Many people develop scripts prone to conflict (such as global parameter conflicts, method name conflicts), you can use namespaces to reduce conflicts, not completely avoid conflicts// JavaScript Document /* var a = 10;function tab () {}function drag () {}function dialog () {} */

Order--The "node. JS self-paced" series of articles will document my learning process for Web development based on node. js.node. JS is a development platform based on the V8 engine that performs JavaScript faster and with good performance, and because it is a language for development in JavaScript, it has a lower learning curve and more efficient development for front-end engineers.Article directory:node. JS Self-study Road--1. Environment constructi

The last article gave the recursive completion of the string inverse of the code, but did not analyze its specific algorithm, today, as the ' ABCDE ' string recursive flip diagram to share with you (the picture is rotten, concrete ideas are still some, details see annex)The recursive call here does not appear at the end of the function, and two preceding recursion appear at the end of the function, so recur

MySQL experience 10-2-lock bitsCN. comMySQL 10-2-lock 1. transactions in the InnoDB and BDB table environments have been introduced before the pseudo transactions. this is the only table type of ACID rule transactions that MySQL naturally supports. The old MySQL table types are still in use in many environments where M

information about the document5. The element used to contain the contents of the document, which is the part of the browser visible area. All visible content should be added inside this element.HTML labelHTML tags use HTML5 GrammarCase: HTML5 is not case-sensitive, but generally in lowercase, the difference js.Tag structure: HTML5 can omit the end tag, good habits generally keep the end tag, the single lab

Jquery Treeview is a lightweight and flexible conversion of unordered lists into a scalable and foldable tree that supports location and cookie-based persistence. 1. Custom htmlhelper dynamically generates unlimited nodes 1 /// 2 /// Custom htmlhelper 3 /// 4 Public Static Class Htmlhelpers 5 { 6 Private Static Stringbuilder sb = New Stringbuilder (); 7 Private Static Blldirectory

to the old state.What should we do?There are several methods:Change BrowserIf the mountains don't come, I will go to the mountains. Chrome 51 + does not support HTTP/2 websites with a remote code. As a browser, you can use other browsers, such as Safari and Edge. In this way, you can use the new protocol to access the world's 10% Web servers supporting HTTP/

collocation edible.The installation method is simplesudo npm install -g phonegapThen you need to choose a UI framework that simulates the phone's UI, which can be jquerymobile, or a powerful ionicsudo npm install -g jquery-mobile 或sudo npm install -g ionicInstall Angularjs:sudo npm install -g angularjsWhen used:phonegap create my-appcd my-appphonegap run androidSeveral packages are installed for a long time and may require patience.Try to modify the sample code, introduce ANGULARJS to render th

In general, we will not write the end of the semicolon, because in JavaScript will automatically complete the semicolon, but the completion is conditional. The completion rule is that the current statement cannot be combined with the next sentence to add a semicolon1, the second line with "(", "[", "+", "-", "/" at the beginning, it is likely to be resolved together, such as:var a=1+2(a). ToString () Parse

){ Equivalent to while (I> = 0) 20 rows Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> PS [size] = ' \ 0 ' ; End the string. Method 2:If you can use C ++, there will be a very simple solution. Decimal2binary. CPP/C ++ Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 1 /*

Web Front-end development practice 3: jQuery Implementation of level 2 drop-down menus As we all know, jQuery is a framework that encapsulates JS to make it easier to use. The first two blog posts are implemented using CSS styles and JS. In this article, jQuery is used to implement the level-2 drop-down menu. The following knowledge is required to implement JQuer

refactoring can be understood as "convert design to Web page", it can be simple to the pad image directly into the page, it can be complicated to consider the use of each label in the page, consider page performance. The job content is generally "design draft-transduction-write HTML and CSS". Page refactoring and front-end relationships can be understood as: page refactoring is the refinement of the front-end