Detect JS Code of various browsers and Systems
The Code is as follows:
Var sUserAgent = navigator. userAgent;Var fAppVersion = parseFloat (navigator. appVersion );Function compareVersions (sVersion1, sVersion2 ){Var aVersion1 = sVersion1.split (".");Var aVersion2 = sVersion2.split (".");If (aVersion1.length> aVersion2.length ){For (var I = 0; I AVersion2.push ("0 ");}} Else if (aVersion1.length For (var I
Js identifies different browsers Based on userAgent for judgment, jsuseragent
Check the browser, pay attention to the browser judgment order, mainly based on userAgent for judgment.
// Check the browser var client = function () {var engine = {ie: 0, gecko: 0, webkit: 0, khtml: 0, opera: 0, ver: null }; var browser = {// viewer ie: 0, firefox: 0, safari: 0, konq: 0, opera: 0, chrome: 0, ver: null}; var ua = navigator. userAgent; // the browser checks i
detecting the user proxy string. The user agent string contains a large amount of information related to the browser, including the browser, platform, operating system, and browser version. The user proxy string has a long history. During this period, the browser provider view adds some deceptive information to the user proxy string to cheat the website details. User proxy detection requires special skills, especially when Opera conceals the user proxy string. Even so, the user agent string can
This article provides a detailed analysis of the implementation code of the browser for js detection. For more information, see writing cross-browser js programs, browser detection is a very important task. From time to time, we need to write branch code for different browsers.
The following is an example:
The Code is as follows:
// Add the event tool functionFunction addEvent (el, type, handle ){If (el. addEventListener) {// for standard browsesEl. addEventListener (type, handle, false );} El
. The original ff 3 is changed to xmlHttp. onreadystatechange = xmlHandle (); however, with parentheses added, IE does not work. Alas, FF was originally regarded as a chicken skin. Now I feel that FF is purely named as a "standard support, it is a waste of time for programmers. However, this program is really important, and there is no way to debug it again to see if there is a simpler way, as shown below:XmlHttp. open ("GET", Url, false );XmlHttp. send (null );If (xmlHttp. status = 200)XmlHandl
= '/';}}}
But this does not work. The original ff 3 is changed to xmlHttp. onreadystatechange =XmlHandle ();However, with parentheses added, IE does not work. Alas, FF is a chicken skin, and now I feelFF is purely a title of "Supporting standards", but it is a waste of time for programmers.However, this program is really important, and there is no way to debug it again to see if there is a simpler way, as shown below:
XmlHttp. open ("GET", Url, false );XmlHttp. send (null );If (xmlHttp. status
The Lotus Notes RTF domain is also very powerful. In addition to common text, it also supports images, tables, embedded objects, HTTP links, notes links, attachments, and many other types. This article describes how to use these classes to flexibly operate rich text fields.Lotus script class related to rich text fields in notes
Lotus script classes related to the operations on rich text fields in notes include:
Notesrichtextnavigator: the navigator
, and browser version. The user proxy string has a long history. During this period, the browser provider view adds some deceptive information to the user proxy string to cheat the website details. User proxy detection requires special skills, especially when Opera conceals the user proxy string. Even so, the user agent string can still detect the rendering engine used by the browser and its platform, including mobile devices and game systems.
During each HTTP request, the user agent string is s
In fact, it is not difficult to achieve, we first the implementation process to think about, first of all, if the navigation in the scope of the display, you do not have to make changes. When the navigation is out of range, that is, the distance from the top of the screen is less than 0, we have to float it on the top of the screen, and then more than 0, to do a recovery operation, the principle is so simple, roughly look at the effect of the picture
Copy Code code as follows:
$ (
At this stage, our RN practice is based on the published app, such as replacing a sub-module that enters from a portal into an RN page. Then we can design this submodule as a generic RN container, and all RN pages jump inside the RN container.
RN container in iOS using Uiviewcontroller, Android using activity or fragment, load bundle files, normally, a module only one bundle file.
To achieve the page jump, we can use the Navigator component, the spe
start with capital, details click on the hump name to read. Pascal naming rules: Similar to the hump, but the first letter to uppercase, details click on the Pascal name to read. Underline naming rules: You use underscores to split words. third-party frameworks
This way, under react-native . How to import a third-party framework
First of all, the third-party framework is definitely going to go to GitHub. Search for React-native-tab-navigator within t
two events
(1), attributes:Window. navigator. onLine
The navigator. onLine attribute indicates whether the current status is onLine. True indicates online. false indicates offline. When the network status changes, the value of navigator. onLine also changes. Developers can obtain the network status by reading its value.
if (navigator.onLine) { alert('online'
This article mainly introduces JavaScript code used to identify the uc browser. For more information, see.
If (navigator. userAgent. indexOf ('ucbrowser ')>-1) {alert ("uc Browser");} else {// operations not performed by uc browser}
If you want to test the features of a browser, you can obtain them using the following methods:
JS to get browser InformationBrowser code name: navigator. appCodeNameBrowser
Browser compatibility is the first problem to be solved by the browser development framework in front-end development. To solve the compatibility problem, you must first determine the browser type and version accurately, the browser version can only be known by analyzing the browser's userAgent. today, we will summarize various judgment methods and hope to help you obtain browser information through JS.
Browser code name: navigator. appCodeName bro
Summary of js/jquery methods for determining browser types, jsjquery
JS to get browser Information
Copy codeThe Code is as follows:Browser code name: navigator. appCodeNameBrowser name: navigator. appNameBrowser version: navigator. appVersionJava support: navigator. javaEnabled ()MIME Type (array):
window.
Next, we need to hide or display the Window Based on the menu status. To do this, I first try to remove the menu. I used status variables to track the window of the last release menu. It is possible that the menu cannot be removed. I will handle this error. Of course, I have not performed any operations in the processor. I also used a status variable tracking menu for visibility. This process of removing the menu partially resets the state variable.
Public Function togglemenu (): void
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