When we enter www.cnblogs.com in the address bar of the browser, and then enter, enter to see what happened to the page?Domain name resolution--Initiates a TCP 3 handshake--initiates an HTTP request after the TCP connection is established--the server responds to the HTTP request, the browser gets the HTML code--the
The judgment includes not only computer browsers, but also Android, iOS mobile phones and tablets, gaming systems
Copy Code code as follows:
var client = function () {
Rendering engine
var engine ={
ie:0,
gecko:0,
webkit:0,
khtml:0,
opera:0,
Ver:null
};
Browser
var browser = {
ie:0,
firefox:0,
safari:0,
konq:0,
opera:0,
chrome:0,
Ver:null
};
var system ={
Win:false,
Max:fa
Since the 3Q War 360 browser useragent has become ie, the common method of judgment is also ineffective, so have to change the way.
On page 360, press F12, pull up the debugging window, analyze the Navigator and window two objects, and finally find a value that can be used to identify 360 browsers.
The test results let us down.
Keep looking (The following code is
The js action before closing the browser is compatible with multiple browsers and browser js
JS compatible browsers
You need to run the program in IE8 and FF to see which statement reports an error or fails to achieve the expected purpose. Then, check the manual to see how to modify the statement in this browser, fin
Method One
First step
We first open the QQ browser and then click on the "Menu" button, enter, as shown in the following image
Second Step
Then in the open interface you will see that there is a "download", click on it can be entered to view the downloaded file, and then you can delete it.
Method Two
First step
Also open the mobile phone QQ
First, I am a front-end. Recently, the company is experimenting with iOS and H5 hybrid development, so js and OC communication are indispensable. I have learned that the browser has a large number of built-in jsapis to call native functions. I guess it should be injected through OC. In addition, these Apis can execute js callbacks with high flexibility, but the interfaces seem to be asynchronous. Recently,
Method One: Scale the page scale
There is a magnifying glass icon in the bottom right corner of the browser. After the percentage, this percentage refers to the page font size in the browser screen display percentage, click on this icon, will pop up a percentage pull box, can be based on your own needs to pull the percentage bar, the page will display the size,
Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced. JS to determine whether it is a PC browser or mobile device browser
Programmer PHP
What is the current PHP Programmer's job to do (I know is to do Web pages)? For example, what is the difference between a big company and a small company?
Reply to discussion (solution)
Large companies have their own set of systems to improve for the main
web, you need to develop a php type, and then you must at least understand the http protocol. If tianyao is not good, you 'd better develop a network protocol, see the application layer such as http and ftp from the hardware cable. only when you understand the network can you understand how the web works. For example, the php background language is used for http protocol (of course, apache
form of a box model, which requires the browser to calculate its location and size, which is called relow (reflux);When the box model's position, size, and other attributes, such as color, font, etc. are determined, the browser begins to draw the content, a process called repain (redraw).When the document loading process encountered a JS file, the HTML document
First of all, the so-called SQL dynamic and static, refers to when SQL statements are compiled and executed, both are used in SQL embedded programming, which is referred to as embedded refers to the SQL statement embedded in the high-level language, rather than the type of microcontroller embedded programming.In a high-level language, if an SQL statement is embedded, and the main structure of the SQL statem
; direction 3: Big Data O M and cloud computing. If you are proficient in any direction, there will be no space in the "front (money)" way.
What is the big data talent gap? Is Data Big Data engineers well employed? The answer is: Big Data development is the foundation and h
This sectionCodeThere seems to be no problem with the top background, but when you zoom out the browser window, drag the scroll bar and you will find that the background is missing. This bug exists with width: 100%; he only obtains the current 100% width of the browser, but does not add the length of the scroll bar. Solution: Add Min-width: ** Px after width: 1
The cookie is valid at 0. if the cookie still exists after it is opened in the original browser due to unexpected circumstances (such as power failure or process termination), the cookie is cleared normally. Please refer to my requirements for some ideas...
Reply to discussion (solution)
The cooki
Enter the URL from the browser address bar, to the Web page opened completely, what happened in the middle?This is a classic interview problem, I thought that only I like this problem, and later on the micro-blog found other technology Daniel also out of this problem.This problem actually tests not the specific technology, but the whole concept of the Internet an
Patterns and frameworks are everywhere in software design. A friend once asked me what is the mode? I am also studying and give the following summary about my learning experience. (Note: personal opinions are for reference only. please correct me .)
1. What is the mode?
Pattern. It
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 applications of the browser, click on the download link can not download the application. So for these browsers we need to give users tips from safari or the system from the browser to open the sharing page, through
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