Ajax method to clear browser js, css, image cache_javascript skills
When doing stuff, I always store the address of the image on the server in the database, and then display it in the browser, but later I discovered two problems. First: For security reasons, js cannot read local images. Otherwise, if you write a js, you can get the files in anyone’s computer. Second: The image is stored on the server’s hard drive, not on the client’s hard drive, so it cannot be retrieved Later, I looked for methods on the Internet, and the methods I found were all kinds of high-level answers for converting binary to xml. Then I was too lazy, so I thought of one myself The method is to use the BufferedImage class. Start First of all, let me talk about my idea, which is to load the local image into the memory, then put it into the buffer stream of BufferedImage, and then use ImageIO.write(), strong>Now everyone is probably thinking of an idea, but if we talk about ajax, the data obtained is probably still a mess! It’s okay, I’ll introduce that later. Tools First create a tool for loading images, store the address of an image as a parameter, and get the buffer stream…
Use JavaScript to obtain js, css, Flash and other files in web pages_Typical special effects
Author: Ma JianEmail: stronghorse@tom.comHomepage: http://stronghorse.yeah.netVersion: 1.01Initial release date: 2005.08.29Last update date :2005.09.28 Table of contents1. Preface2. General steps for obtaining files from E-books or web pages3. Obtaining linked css files from E-books or web pages4. From E-books or web pages Get linked js files from books or web pages5. Get Flash files from E-books or web pages6. Get background music files from E-books or web pages7. Get images from E-books File8. Entering the frame page9. Other issues 1. Foreword Recently, I heard someone complaining that using miniKillEBook to decompile e-books, you can only get HTML web pages, but not js, css, Flash, background music and other files in the E book. In fact, as long as you have some understanding of Javascript code, it is not difficult to get these files in the E book, even if you only use the publicly released CtrlN. Declaration in advance: 1. All the following methods are based on Javascript, so it may feel like going around in circles, and the effect cannot be compared with IECracker and KillEBook that directly call IE’s non-public interface. But this is just the right balance: for good scholars who want to learn from other people’s experience in…
What is the order of learning HTML, CSS, JavaScript, PHP, and MySQL?
Sincerely thank you for your answer! A few days ago, I was working on WordPress blogs and became very interested in building websites. Are the things mentioned in the title a complete set of knowledge required to build a website? Is there anything else you need to learn? How to arrange the order of learning? Thank you! PS: I heard that there is also apache, which seems to be a server-side software. Do I need to learn it separately? Reply content: If you have the patience to persist for more than a year, I would recommend HTML, css, js, apache, php, mysql The latter three require software installation. I recommend wamp, an excellent one-stop environment. Configuration, WampServer, the web development platform on Windows directly includes apache, php, and mysql software, saving you the trouble of installing them one by one.Many people Ask in the comments about the corresponding software under mac os, and add here: XAMPP Installers and Downloads for Apache Friends Learn first HTML, css, these two things are a set, very easy to understand. Just go through the tutorials on w3school. Remember to go through them one by one. Don’t be lazy. Once you start to be lazy,…
javascript-Is there an open source library for js, css, html code formatting?
I used ace.js to make an online code editing tool, and used PHP in the background. But ace does not support formatting the code. Are there any available js or php libraries that can format js, css, and html codes? Please recommend. Reply content: I used ace.js to make an online code editing tool, and used PHP in the background. But ace does not support formatting the code. Are there any available js or php libraries that can format js, css, and html codes? Please recommend. codemirror
Introduction to methods and examples of javascript preloading images, css, and js_javascript skills
The advantage of preloading is that the web page can be presented to the user faster. The disadvantage is that it may increase useless requests (but static files such as pictures, css, and js can be cached). If the css, js, and pictures in the page visited by the user are cached, With preloading, users will open the page much faster, improving the user experience. When using some large pictures to display, preloading large pictures is a very good method, so that the pictures can be presented to users faster. Not much to say, as a front-end siege master, everyone knows it. Let me share the tests I did and the results obtained. First let’s talk about the status code returned by the server that you need to know:status-code: 200 – The client request is successfulstatus-code: 304 – The file is already in the browser cache, and the server tells the client that it turns out that Buffered documents can continue to be used. This article tests to determine whether the file has been cached. It is used to determine whether 304 is returned. The following is a test of several preloading methods, including loading img/js/css in different browsers, including…
2 solutions to browser cache problems such as js, css, img, etc._javascript skills
details make a difference! The significance of browser caching is to improve execution efficiency, but it also brings some problems, causing the server to modify js and css, and the client cannot updateMethod 1 generates random numbers The code is as follows: Disadvantages, browser Caching is meaningless and is loaded dynamically every time. Method 2 version number control, set global variables, increase the version number by 1 before each release Code As follows: This approach is recommended, it is relatively simple. The disadvantage is that HTML pages cannot be used, but there should not be too many such pages More methods: Automatically implement it by reading the file size and file modification time to generate MD5, compress and merge js when the program is automatically built, and globally The replacement version is complicated. If you are interested, you can study it Who has a better method?
HTML, CSS, JavaScript Cheat Sheet Recommendations_Basic Knowledge
In fact, Cheat Sheet is here to help us gather the information we use most frequently in our daily life for easy use and make our work more efficient. With them, your brain doesn’t have to spend extra time memorizing them – you just need to open the summary and find the information you want immediately. In this article, you can see the most practical HTML, CSS, Javascript cheat sheets, which can be used as reference materials and memos to help you find the ideas you want as quickly as possible. required information. See if these short lists are what you want, please leave your suggestions below the article, thank you! HTML HTML Help Manual HTML Quick Reference HTML special character cheat sheet Dreamweaver Dreamweaver Quick Reference Guide CSS CSS 3 Cheat Sheet I hope you enjoy this collection of cheat sheets and please share them with your development friends.
In Web website building technology, what are HTML, HTML5, XHTML, CSS, SQL, JavaScript, PHP, ASP.NET, and WebServices? –
There are many technologies for building websites, such as HTML, HTML5, XHTML, CSS, SQL, Javascript, PHP, http://ASP.NET, Web Services, browser scripts, server scripts, etc. What’s the difference? Novices don’t understand anything and want to clarify the relationship and application scope of all these technologies. Reply content: A semester ago, I had almost no idea what these were like the original poster. After a semester, I almost understood them all. Let me talk about my own understanding.> <Since I haven’t been in contact for a long time, I welcome corrections if there are any mistakes~ First of all, you need to know what the process of website access is:Suppose you enter the address of this question in the browser address bar http://www.zhihu.com/question/22689579 You might as well integrate the technologies you mentioned into the development process of the Web. If you look at them from a technical and historical perspective, you will know the background of the birth of these technologies and the problems they solve. Refer to an article I once wrote: History of the Development of Web Development Technology. 1. The birth of the Web When it comes to the Web, one word that must be mentioned is “Internet”. Web…
HTML, CSS, JavaScript cheat sheet recommendations
In fact, Checklist is here to help us gather the information we use most frequently in our daily life for easy use and make our work more efficient. With them, your brain doesn’t have to spend extra time memorizing them – you just need to open the summary and find the information you want immediately. In this article, you can see the most practical HTML, CSS, Javascript cheat sheets, which can be used as reference materials and memos to help you find the ideas you want as quickly as possible. required information. See if these short lists are what you want, please leave your suggestions below the article, thank you! HTML HTML Help Manual HTML Quick Reference HTML special character cheat sheet Dreamweaver Dreamweaver Quick Reference Guide CSS CSS 3 Cheat Sheet I hope you enjoy this collection of cheat sheets and please share them with your development friends.
Use JavaScript to obtain js, css, Flash and other files in web pages
Author: Ma JianEmail: stronghorse@tom.comHomepage: http://stronghorse.yeah.netVersion: 1.01Initial release date: 2005.08.29Last update date :2005.09.28 Table of contents1. Preface2. General steps for obtaining files from E-books or web pages3. Obtaining linked css files from E-books or web pages4. From E-books or web pages Get linked js files from books or web pages5. Get Flash files from E-books or web pages6. Get background music files from E-books or web pages7. Get images from E-books File8. Entering the frame page9. Other issues 1. Foreword Recently, I heard someone complaining that using miniKillEBook to decompile e-books, you can only get HTML web pages, but not js, css, Flash, background music and other files in the E book. In fact, as long as you have some understanding of Javascript code, it is not difficult to get these files in the E book, even if you only use the publicly released CtrlN. Declaration in advance: 1. All the following methods are based on Javascript, so it may feel like going around in circles, and the effect cannot be compared with IECracker and KillEBook that directly call IE’s non-public interface. But this is just the right balance: for good scholars who want to learn from other people’s experience in…