the resource that was returned by the server when it was last requested. The ETag and if-none-match work by adding etags information to the HTTP response. When the client requests the resource again, the If-none-match information (the value of the ETag) is added to the HTTP resquest, and if the server verifies that the etags of the resource has not changed (the resource has not changed), it will return a 304 state, or the server will return 200 statu
Title, what goes through the browser to visit a website?Content from: https://www.cnblogs.com/yangliheng/p/6112955.htmlObjectiveCome on, go with me. To clean up the HTTP and DNS protocols, whether you're dev or ops these are basic network knowledge that you have to know, as shown in the process of accessing the site, we've divided the user into two parts:
DNS (IP address for resolving domain names)
What happened in the process of receiving from the input URL to the browser?What really happens if you navigate to a URLBoth of the above articles are well understood and worth reading.The next step is to summarize this process:1, first, will query the cache, if the cache exists, then respond directly, otherwise contin
In the process of learning the front end, you often see the question: What happens when you enter a URL in a browser. The following is a summary of the individual learning process, for individuals to review the use, if there is an incorrect or insufficient understanding of the place I hope you point out.Let's start wit
? Why?http://Is the address directly redirected? What is this technology?
Supplement:
The previous QR code is incorrect and has been corrected. The QR code contains the jump link corresponding to iOS and Android.
I did not try Android-No Android machine-according to the feedback from @ chuyao and @ Karnaugh, Android
Now, the 360 secure browser has a network Favorites feature. However, many people may not have been used, so it is not very understanding. So, what are the features of the 360 secure browser network favorites? Just follow the little ones and take a look.
360 Secure Browser
What about Apple mobile UC browser flash-back? UC Browser is the world's largest use of the third party mobile browser, is everyone has always liked to use the browser. Some users use t
1. Background informationWhat happens when you enter a URL in the browser's address bar and return to it? This is a classic face test, but also a complex topic, involving a lot of things, different software developers have different answers to this question, for some of them can be unlimited to delve into, today we will focus on the Web front-end to see what happened.2. Knowledge AnalysisBasic Flow:① Queryi
settings-outer chain style-inline style--html.C. Use the DOM and Cssom to build a rendering tree (rendering trees).The render tree and the DOM tree are a bit like, but there are differences.The DOM tree corresponds completely to the HTML tag one by one, but the render tree ignores elements that do not need to be rendered, such as head, Display:none elements, and so on.And each line in a large piece of text is a separate node in the render tree.Each n
Can cookies be placed on the server side? What if the browser can be identified? No? Why?
Reply content:
Can cookies be placed on the server side? What if the browser can be identified? No? Why?
No.
Because the HTTP protocol is stateless, that
What happens when the browser's favorites are gone? When we see a good Web site or Web page in the browser, we will collect it and display it in the browser's Favorites bar, but you have not seen the browser's Favorites bar. The following sharing browser is missing the solution, together with small series to see it!
T
Firefox browser 40.0.2 updated what Firefox browser new features at a glance
FIREFOX40 is welcome again, the latest version is 40.0.2. The Firefox update mainly fixes problems with startup crashes on some computers. Firefox40.0 based on Gecko 40 kernel development, optimi
theExpires,and is not expired, the browser reads directly from the cache directory and does not send a request to the serverF5 when refreshedThe difference between a common request is that even if the resource is setExpiresand is not expired, the
Chrome Google browser hints Adobe Flash Player has expired what to do
Chrome Google browser hints Adobe Flash Player has expired solution
First download and install the latest Google Browser stable version, the new version has fixed most of the errors;
If the problem is
What is ASP? What can it do?
1. What is ASP?
Literally, ASP has three meanings:
1. Active: ASP uses Microsoft ActiveX technology. ActiveX (COM) technology is an important foundation of Microsoft software. It adopts the technology
When creating a PHP project, you need to set the input tag to read-only, but the user can modify it in the browser. What should I do? When creating a PHP project, you need to set the input tag to read-only, but the user can modify it in the browser. What should I do?
Reply content:
When creating a PHP project, you
Cookie is a Web applicationProgramIt provides a useful method to save user information. For example, when a user accesses your site, you can use cookies to save user preferences or other information, so that when the user visits your site next time, the application can retrieve previously saved information.
This article describes the application of cookies in ASP. NET applications. It shows you the technical details of cookie application in ASP. NET
, that is, the requested resource has been permanently transferred to the new location. When the 301 status code is returned, the response message is also accompanied by a redirected URL, which the client receives and then changes the URL of the HTTP request to be sent again. 404 Not Found Indicates that the resource requested by the client could not be found.9.
This article is an example of how JS determines whether the current page is open in a micro-trust browser. Share to everyone for your reference, specific as follows:
Recently do a lot of HTML5 projects, many pages will be through micro-credit microblogging and other SNS to share out. Provide a download of the company app on the sharing page. However, in many app
Baidu browser in yesterday can sell a big, notice of the new privileges, is also scheduled to come, then Baidu browser new privileges such as cloud to have what kind of function, although not as many users guess directly open Baidu cloud disk, but the speed of Baidu Cloud member is
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