JavaScript is a scripting language that is commonly used in web development. It can be used to obtain local user names to facilitate users to log in and verify on the website. Below, we will introduce several JavaScript methods to obtain local user names.
1. Using the navigator object
You can obtain browser information through the navigator object in JavaScript, including the user's operating system information and browser information. So we can use it to get the local username.
The code is as follows:
var userName = navigator.oscpu;
The disadvantage of this method is that it is not very accurate, because the user may use a virtual machine or shared resource environment, and the operating system information obtained at this time may not necessarily be Current username.
2. Use ActiveXObject object
ActiveXObject is an object supported by IE browser and can be used to obtain the user's user name.
The code is as follows:
var network = new ActiveXObject('WScript.Network');
var userName = network.UserName;This method needs to be used in the IE browser, and if the user closes the ActiveX control, the user name cannot be obtained.
3. Using the XMLHttpRequest object
The XMLHttpRequest object is a JavaScript object used to exchange data with the server in the background. It can also be used to obtain the local user name.
The code is as follows:
var xhr = new XMLHttpRequest();
xhr.open('GET', '/', false, '', '');
xhr.send('');
var userName = xhr.getResponseHeader('X-Client-User');This method needs to set the response header information on the server side so that it can be obtained on the client side.
4. Using Java Applet objects
Java Applet is a technology that can embed Java programs in web pages. The user's user name can be obtained through Java Applet.
The code is as follows:
<APPLET
codebase="your.class.file"
code="AppletClassName.class"
width="0" height="0">
</APPLET>import java.applet.Applet;
import java.awt.Graphics;
public class AppletClassName extends Applet {
public void paint(Graphics g) {
String userName = System.getProperty("user.name");
g.drawString("User Name: " + userName, 0, 0);
}
}This method requires the user's browser to support Java Applets, and requires the user to install the specified Java plug-in and authorization.
To sum up, the above are several JavaScript methods to obtain local user names. Different methods have their own advantages and disadvantages, and they need to be selected according to the actual situation. During development, compatibility and security should be considered to prevent user information from being leaked.
The above is the detailed content of How to get local username in javascript. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How can CSS be used to implement dark mode theming on a website?
Jun 19, 2025 am 12:51 AM
ToimplementdarkmodeinCSSeffectively,useCSSvariablesforthemecolors,detectsystempreferenceswithprefers-color-scheme,addamanualtogglebutton,andhandleimagesandbackgroundsthoughtfully.1.DefineCSSvariablesforlightanddarkthemestomanagecolorsefficiently.2.Us
Can you explain the difference between em, rem, px, and viewport units (vh, vw)?
Jun 19, 2025 am 12:51 AM
The topic differencebetweenem, Rem, PX, andViewportunits (VH, VW) LiesintheirreFerencepoint: PXISFixedandbasedonpixelvalues, emissrelative EtothefontsizeFheelementoritsparent, Remisrelelatotherootfontsize, AndVH/VwarebaseDontheviewporttimensions.1.PXoffersprecis
What are the key differences between inline, block, inline-block, and flex display values?
Jun 20, 2025 am 01:01 AM
Choosing the correct display value in CSS is crucial because it controls the behavior of elements in the layout. 1.inline: Make elements flow like text, without occupying a single line, and cannot directly set width and height, suitable for elements in text, such as; 2.block: Make elements exclusively occupy one line and occupy all width, can set width and height and inner and outer margins, suitable for structured elements, such as; 3.inline-block: has both block characteristics and inline layout, can set size but still display in the same line, suitable for horizontal layouts that require consistent spacing; 4.flex: Modern layout mode, suitable for containers, easy to achieve alignment and distribution through justify-content, align-items and other attributes, yes
What are CSS Houdini APIs, and how do they allow developers to extend CSS itself?
Jun 19, 2025 am 12:52 AM
CSSHoudini is a set of APIs that allow developers to directly manipulate and extend the browser's style processing flow through JavaScript. 1. PaintWorklet controls element drawing; 2. LayoutWorklet custom layout logic; 3. AnimationWorklet implements high-performance animation; 4. Parser&TypedOM efficiently operates CSS properties; 5. Properties&ValuesAPI registers custom properties; 6. FontMetricsAPI obtains font information. It allows developers to expand CSS in unprecedented ways, achieve effects such as wave backgrounds, and have good performance and flexibility
What is the significance of Vue's reactivity transform (experimental, then removed) and its goals?
Jun 20, 2025 am 01:01 AM
ReactivitytransforminVue3aimedtosimplifyhandlingreactivedatabyautomaticallytrackingandmanagingreactivitywithoutrequiringmanualref()or.valueusage.Itsoughttoreduceboilerplateandimprovecodereadabilitybytreatingvariableslikeletandconstasautomaticallyreac
How can CSS gradients (linear-gradient, radial-gradient) be used to create rich backgrounds?
Jun 21, 2025 am 01:05 AM
CSSgradientsenhancebackgroundswithdepthandvisualappeal.1.Startwithlineargradientsforsmoothcolortransitionsalongaline,specifyingdirectionandcolorstops.2.Useradialgradientsforcirculareffects,adjustingshapeandcenterposition.3.Layermultiplegradientstocre
How can internationalization (i18n) and localization (l10n) be implemented in a Vue application?
Jun 20, 2025 am 01:00 AM
InternationalizationandlocalizationinVueappsareprimarilyhandledusingtheVueI18nplugin.1.Installvue-i18nvianpmoryarn.2.CreatelocaleJSONfiles(e.g.,en.json,es.json)fortranslationmessages.3.Setupthei18ninstanceinmain.jswithlocaleconfigurationandmessagefil
How does provide and inject allow for deep component communication without prop drilling in Vue?
Jun 20, 2025 am 01:03 AM
In Vue, provide and inject are features for directly passing data across hierarchical components. The parent component provides data or methods through provide, and descendant components directly inject and use these data or methods through inject, without passing props layer by layer; 2. It is suitable for avoiding "propdrilling", such as passing global or shared data such as topics, user status, API services, etc.; 3. Note when using: non-responsive original values ??must be wrapped into responsive objects to achieve responsive updates, and should not be abused to avoid affecting maintainability.
