Some websites first determine whether the user's request is from the browser. If not, the system returns incorrect text. Therefore, when capturing information with httpclient, the following information is added to the header:Header. put ("User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; sv1; qqdownload 1.7 ;. net CLR 1.1.4322; CBA ;. net CLR 2.0.50727 )");
By defaultThe User-Agent value is Jakarta commons-httpclient 3.0rc1. To change it (for example, to Mozilla/4.0), you must
For example, download the 1.2.0.5 library from codeplex of 51degrees.mobi.
Why download the version 1.2.0.5 is simple. Because the library of version 1 implements the wurfl interface and uses the wurfl hardware package, you can accurately obtain the hardware model. The Library of version 2 can no longer obtain the hardware model. Only the paid version can be used.
When we go back to the database version 1.2.0.5, The wurfl hardware package is old. We can download the latest package from the off
ASP. net has a good mechanism to identify users' browsers: request. browser can get an httpbrowsercapabilities, and then use the corresponding attributes to get the value, compare the browser type, screen size, JS support, and so on. For mobile devices, you can easily obtain the required attributes (of course, the browser library provided by ASP. NET is still incomplete ).
But how does one identify the browser based on useragent in winapp? I can see
uri:d| Str:d, Str:d$form-body, *%headers); say JPost'Https://httpbin.org/post?meow=moo',: 72foo,:bar; say JPost'Https://httpbin.org/post?meow=moo',% (Content-type ='Application/json'),: 72foo,:barUse it to send a request, like this:' http://localhost ' %headers;This is the JPost request, which automatically gets the JSON-formatted return value, and if you want to get a response request in a generic format, you can use its POST method.The WWW module can be found at the following address:Https://
Asp. NET has a good mechanism to identify the user's browser: With Request.Browser can get a httpbrowsercapabilities, and then use the corresponding properties can be taken to the value of browser type, screen size, JS support and so on. For mobile devices that can be used more easily, it is easy to get the required attributes (of course, ASP.net's own browser library is still very incomplete).
But how do you identify the browser according to UserAgent
has been upgrading the company's mobile site recently, out of a touch-screen version of the special, do a good job, after the agent to determine the corresponding smart phone devices, and then jump to the new mobile site through unremitting efforts,
This article mainly introduces the encapsulated js judgment operating system and browser code sharing, which is very helpful for system and browser compatibility. For more information, see
Abstract:
The most important task for front-end development is compatibility, system compatibility, browser compatibility, and so on. Today, I will share a method for judging operating systems and browsers encapsulated in my project.
Operating System:
var os = (function() { var
Share the encapsulated js judgment operating system with the browser code and encapsulate the js browser code
Abstract:The most important task for front-end development is compatibility, system compatibility, browser compatibility, and so on. Today, I will share a method for judging operating systems and browsers encapsulated in my project.
Operating System:
Copy codeThe Code is as follows:Var OS = (function (){Var UserAgent = navigator.
Summary:For front-end development, our most important work is compatibility, system compatibility, browser compatibility and so on. Today I'm going to share a method for judging the operating system and the browser that I encapsulate in my project.
Operating system:
var os = (function () {
var useragent = Navigator.userAgent.toLowerCase ();
return {
Isipad :/ipad/.test (useragent),
1, a recommended method: PHP to determine the search engine spider crawler or human access code, excerpted from Discuz x3.2
The actual application can be judged in this way, directly is not a search engine to perform operations
2, the second method:
Using PHP to achieve spider access log statistics
$useragent = Addslashes (Strtolower ($_server[' http_user_agent '));
if (Strpos ($
Summary:Our most important work for front-end development is compatibility, system compatibility, browser compatibility, and more. Today I'm going to share a way of judging the operating system and browser that I encapsulated in my project.Operating system:varOS = (function() { varUserAgent =navigator.userAgent.toLowerCase (); return{isipad:/ipad/. Test (useragent), Isiphone:/iphone os/. Test (useragent)
To learn whether a website is opened on a mobile device or in a PC web browser, we can do this in the following ways:
We can analyze and determine the specific information in request. useragent. Because useragent contains a lot of information, we can judge it based on some of the information. The specific judgment method is as follows:
(1) string struseragent = request.
library in your project. Try to replace the previous code with your code library to see if it meets the features you want. Try to make your code library as intuitive as possible, so that it can be used more flexibly under boundary conditions, as well as customization (as described in later articles ).
This is an outline of the code library for the user proxy string, which may look like:
// Start with empty UserAgent string var
string.Third, the specific solution1. Third-party framework YywebimageLocate the Yywebimagemanager.m file, navigate to the setting of the HTTP request header's properties that is _headers, add a user-agent key value pair, the specific changes can see the following method-(Instancetype) Initwithcache: (Yyimagecache *) cache queue: (Nsoperationqueue *) queue{ Self=[Super Init]; if(!self)returnNil; _cache=Cache; _queue=queue; _timeout=15.0; NSString*useragent
In jquery, the navigator. userAgent. indexOf is used to determine the browser type and perform some processing. If you do not want to use jquery, you can use it if you change the code slightly.
Jquery judges IE6 code:
The Code is as follows:
If ($. browser. msie ($. browser. version = "6.0 ")! $. Support. style ){// Code}
Jquery browser Judgment Method
In jquery, the navigator. userAgent. indexOf is u
This article mainly introduces PHP code summary for determining whether a visitor is a search engine spider or a common user. There are always one method that suits you, prevent search engine spider from dragging the search engine. 1. recommended method: php judges whether the search engine spider crawlers are manually accessing the Code, from Discuz x3.2
In actual applications, you can determine that the operation is not performed by a search engine.
2. Method 2:
Use PHP to collect spide
In Jquery, navigator. userAgent. indexOf is used to determine the browser type and perform some processing. It is recommended that you learn about Jquery and learn about the idea.
Main usage: $. browser. ['browser keyword ']Copy codeThe Code is as follows: $ (function (){If ($. browser. msie ){Alert ("this is msie ");} Else if ($. browser. safari ){Alert ("this is safari! ");} Else if ($. browser. mozilla ){Alert ("this is mozilla! ");} Else if ($. b
In Jquery, navigator. userAgent. indexOf is used to determine the browser type and perform some processing. It is recommended that you learn about Jquery and learn about the idea.Main usage: $. browser. ['browser keyword ']Copy codeThe Code is as follows:$ (Function (){If ($. browser. msie ){Alert ("this is msie ");} Else if ($. browser. safari ){Alert ("this is safari! ");} Else if ($. browser. mozilla ){Alert ("this is mozilla! ");} Else if ($. brow
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