following is a typical callback method:
function callback() { if (xmlHttp.readyState == 4) { if (xmlHttp.status == 200) { //do something interesting here } } }
As you can see, this is different from the normal request/response pattern, but not entirely unfamiliar to web developers. Obviously, there are things you can do when creating and building XMLHttpRequest objects, and you can make a difference when the callback function completes the state check. Generally, you will wrap these standard
the last domain with the jump bar, if the previous application (not using AJAX application) did not save the form, then use AJAX after the application do not save the form.
The most important problem when implementing Ajax is to strive for simplicity, completely from the user, to try to "fool". To take the user to heart, do not do "resume-driven design." If you're just trying to get your new boss to accept you, and therefore use Ajax in your application, this is not appropriate; If you use Aja
coding styles to provide JavaScript validation
JSLint may have identified some structural errors as questionable coding practices, some of which are listed below (the complete list can refer to JSLint's documentation).
JSLint requires that all lines of code end with semicolons. Although JavaScript does allow newline characters to be used as a line terminator, it is generally considered ambiguous and a bad coding style.
Statements using if and for are required to enclose the block of statemen
links displayed in the address bar, which means you can't easily bookmark a page or send a link to a friend. For many applications, this may not be the case, but if your site is dedicated to providing traffic routes and the like, you should provide a solution to this problem.
It is important to use Ajax not to overdo it. Remember, JavaScript runs on the client's browser, and if there are thousands of lines of JavaScript code, it may make the user feel too slow. If the script is not written pro
JavaScript Reference Tutorials
This tutorial provides a more complete primer for readers who are not exposed to JavaScript, but is limited to the basics: all JavaScript closely related to dynamic Web pages is not mentioned in this tutorial, including dynamic positioning, animating, and getting documents to receive more events ( Document.captureevent ()); All of
This is a creation in
Article, where the information may have evolved or changed.
Tutorial content:Go language InformationGolang the basics of Go language programming without a sniffGolang free Go language Web Basics TutorialGo language Web Basic Tutorials list:"Go Web Foundation" 12Go Web Extension learning. mp4"Go Web Foundation" 11 Simple RPC implementation. m
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Three.js is a great open source WebGL Library, WebGL allows JavaScript to manipulate the GPU, realizing the true meaning of 3D at the browser end. But at present this technology is still in the development stage, the material is extremely scarce, the amateur learns basically to through the demo source code and three.js own source code to study.
0. Introduction
I have already given an article "start using Three.js". If you haven't read it, you may need to read it, based o
Android Basics Getting Started tutorial--8.3.11 Paint API--colorfilter (color filter) (3-3)tags (space delimited): Android Basics Getting Started TutorialIntroduction to this section:
Well, originally said not to write today, or write it, after all, rare idle ha ~, this section to bring you areColorfilter's third sub-class:porterduffcolorfilter, see Port
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Ajax| Basic Tutorials
The Ajax Basics Tutorial is the first international book on Ajax . its Chinese version is also the first domestic AJAX books, will be launched by the people's post and telecommunications press .
"Ajax Basics Tutorial" Turing programming series(US) Ryan Asleson Nathaniel T.schutta KinglingPeople's
Android Basics Beginner Tutorial--1.10 anti-compilation apk wins replacement code Resourcestags (space delimited): Android Basics Beginner TutorialIntroduction to this section:
"Anti-compilation apk". It looks as if it's a very high-end look, in fact, it's through some anti-compilation software. Decompile our apk to get the program's source code, images
Android Basics Getting Started tutorial--8.3.6 Paint API--xfermode and Porterduff detailed (iii)tags (space delimited): Android Basics Getting Started TutorialIntroduction to this section:
In the previous section, we learned about the three sons in Xfermode: The Porterduffxfermode constructor method is a parameter:Porterduff.mode, after watching 16 image
Android Basics Getting Started Tutorial--1.2 development environment BuildingTags: Android basics Getting Started Tutorial
Now the mainstream Android development environment is:①eclipse + ADT + SDK②android Studio + SDK③intellij idea + SDKNow most of the domestic developers are still using eclipse, and Google a
Android Basics Getting Started tutorial--1.5.2 git using GitHub to build a remote repositorytags (space delimited): Android Basics Getting Started TutorialIntroduction to this section:
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WebSphere Middleware Basics Introductory Training Tutorial _websphere Video Training TutorialsIntroduces the concepts of middleware, WebSphere Concepts, profiles,dm,node,agent, data sources, connection pooling, consoles, cluster related, WebSphere installation and deployment.Video Learning Address:http://edu.51cto.com/course/course_id-3785.html650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/6E/14
Android Basics Getting Started tutorial--8.3.16 Canvas API details (Part 1)tags (space delimited): Android Basics Getting Started TutorialIntroduction to this section:
We've spent 13 of bars explaining the most common APIs for the paint class in Android, and we'll start with this section.Canvas (artboard) Some of the common API, we start in the Android basic
can learn, Django is simple!Django featuresPowerful Database capabilitiesWith Python's class inheritance, a few lines of code can have a rich, dynamic database operation interface (API), and you can execute SQL statements if neededcomes with powerful back-Office featuresA few simple lines of code let your site have a powerful background, easy to manage your content!an elegant websiteUse regular match URLs, pass them to the corresponding functions, and define them as you like!Template SystemPowe
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