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How to run a single test file with Jest in VSCode?

How to run a single test file with Jest in VSCode?

UseJestextension's"Run"buttonsorterminalcommandnpxjestfilenametoexecuteasingletestfileinVSCode.InstallJestextensionforinlineRunlinksabovetestblocks,clickthemtorunindividualfiles.Alternatively,useintegratedterminalwithnpxjestpath/to/test-fil

Oct 16, 2025 pm 12:31 PM
What is the CSS :not() selector and how to use it?

What is the CSS :not() selector and how to use it?

The:not()selectortargetselementsthatdon’tmatchaspecificcondition,enablingprecisestylingwithoutextraclasses.Forexample,p:not(.intro)selectsparagraphsexceptthosewithclass"intro",input:not([disabled])targetsenabledinputs,andli:not(:last-child)

Oct 16, 2025 pm 12:30 PM
How to debug JavaScript in Google Chrome from VSCode?

How to debug JavaScript in Google Chrome from VSCode?

Answer: By installing the DebuggerforChrome extension and configuring launch.json, you can debug the front-end JavaScript running in Chrome directly in VSCode. Specific steps include: installing the extension, creating a launch.json file containing the correct URL and webRoot, starting the local server and pressing F5 to start debugging, and ensuring that sourceMapPathOverrides adapts to the project structure to support breakpoint debugging.

Oct 16, 2025 pm 12:29 PM
How to Use the sed Command in Linux for Text Processing?

How to Use the sed Command in Linux for Text Processing?

ThesedcommandinLinuxisastreameditorfortextmanipulation.Itprocessesinputlinebyline,enablingsearch,replace,delete,insert,andappendoperationsusingcommandslikes(substitute),d(delete),i(insert),anda(append).ThebasicsyntaxissedOPTIONS'command'FILENAME,with

Oct 16, 2025 pm 12:28 PM
text processing sed command
How to check the real capacity of a fake USB drive

How to check the real capacity of a fake USB drive

IfyoususpectyourUSBdrivehasfakecapacity,verifyitusingtoolslikeH2testworF3.Thesetoolswriteandreadtestdatatodetectdiscrepanciesbetweenclaimedandactualstoragesize.

Oct 16, 2025 pm 12:26 PM
How to use the DateTimeImmutable class in PHP

How to use the DateTimeImmutable class in PHP

DateTimeImmutable is used to safely handle date and time in PHP. Any modification returns a new object without changing the original instance. When creating, you can pass in a time string or use the current time, such as newDateTimeImmutable('2025-04-05'); support createFromFormat() to parse custom formats. Generate new dates through modify(), add(), sub() and other methods to ensure that the original object remains unchanged. You can use format() to output a formatted string, and directly use comparison operators to determine the time sequence. Since PHP8.2, it can be converted into a variable DateTime object through toMutable(). This class avoids state

Oct 16, 2025 pm 12:25 PM
php
How to work with the filesystem in PHP?

How to work with the filesystem in PHP?

UsePHP'sbuilt-infunctionsforfilesystemtasks:file_get_contents()andfile_put_contents()forsimpleread/writeoperations;fopen(),fread(),fwrite(),fclose()formorecontrol;mkdir(),rmdir(),unlink()fordirectoryandfilemanagement;scandir()tolistfiles;andpathinfo(

Oct 16, 2025 pm 12:23 PM
php File system
How to move the taskbar to the left side in Windows 11?

How to move the taskbar to the left side in Windows 11?

TomovethetaskbartotheleftinWindows11,trythesemethods:1.UseExplorerPatchertocustomizetaskbaralignment.2.Runatrustedscripttomodifyregistrysettings.3.EnablehiddenfeaturesviaViveToolwithadminrights.Rebootafterchanges.

Oct 16, 2025 pm 12:22 PM
task bar
How to fix 'Battle.net is stuck on 'Updating'' or 'Initializing'

How to fix 'Battle.net is stuck on 'Updating'' or 'Initializing'

IfBattle.netisstuckon"Updating"or"Initializing",trythesesteps:1.Restarttheclientandrouter.2.Runasadministrator.3.Clearcacheorrepairtheapp.4.Disableoverlaysandbackgroundapps.5.FlushDNSandresetnetworksettings.6.Checkandeditthehostsf

Oct 16, 2025 pm 12:21 PM
How to fix 'ADB device not found' or unauthorized for Android development

How to fix 'ADB device not found' or unauthorized for Android development

Ifyouencounter"ADBdevicenotfound"or"unauthorized"errors,trythesesteps:1.CheckUSBcableandenableDeveloperOptions&USBDebugging.2.AuthorizethecomputerviatheRSApromptonyourdevice.3.RestartADBwithadbkill-serverthenadbstart-server.4.

Oct 16, 2025 pm 12:20 PM
How to host a WCF service in IIS

How to host a WCF service in IIS

HostingaWCFserviceinIISenablesscalable,reliableHTTPaccesswithautomaticlifecyclemanagement.1.CreateaWCFServiceApplicationinVisualStudiowithaservicecontract,operationcontract,.svcfile,andweb.config.2.Configureweb.configwithendpointsusingbasicHttpBindin

Oct 16, 2025 pm 12:19 PM
How to sync Windows settings across multiple devices?

How to sync Windows settings across multiple devices?

TokeepWindowssettingsconsistentacrossdevices,signinwiththesameMicrosoftaccount,enableSyncSettingsforpreferencesandpasswords,customizesyncedcategories,anduseOneDrivetosyncfilesandfolderslikeDesktopandDocuments.

Oct 16, 2025 pm 12:18 PM
Synchronize
How to Fix Win 10 Upgrade Error 0xc1900208

How to Fix Win 10 Upgrade Error 0xc1900208

Ifyouencountererror0xc1900208duringaWindows10upgrade,resolveitby:1.Uninstallingincompatibleapps.2.RunningtheWindowsUpdateTroubleshooter.3.RepairingsystemfilesusingDISMandSFC.4.ResettingWindowsUpdatecomponents.5.Performingacleanboottoisolatesoftwareco

Oct 16, 2025 pm 12:17 PM
Upgrade error Win 10
How to run an old game in compatibility mode on Windows?

How to run an old game in compatibility mode on Windows?

Ifanoldergamewon’trunonmodernWindows,trythesesteps:1.UsecompatibilitymodeforearlierWindowsversions.2.RuntheProgramTroubleshooter.3.AdjustdisplaysettingslikeDPIscalinganddisablefullscreenoptimizations.4.Forstubborncases,useavirtualmachinewithalegacyOS

Oct 16, 2025 pm 12:15 PM
How to reset the Windows 11 taskbar to its default settings? A troubleshooting tutorial.

How to reset the Windows 11 taskbar to its default settings? A troubleshooting tutorial.

IfyourWindows11taskbarisn'tworkingproperly,trythesesteps:1.RestartWindowsExplorerviaTaskManager.2.ResettaskbarsettingsusingPowerShell.3.Re-registertheShellExperienceHostviacommandline.4.Createanewuserprofiletocheckforprofilecorruption.

Oct 16, 2025 pm 12:14 PM
How to disable startup delay for programs in Windows? A registry hack for a faster boot.

How to disable startup delay for programs in Windows? A registry hack for a faster boot.

TospeedupprogramstartuponWindows,disablethestartupdelaybysettingStartupAppDelayto0intheRegistryEditor,turnoffFastStartupinPowerOptions,andadjustGroupPolicysettingstorunstartupscriptsasynchronouslyanddisablewaitingfornetworkatstartup.

Oct 16, 2025 pm 12:13 PM
windows 啟動(dòng)延遲
How to enable spell check in Notepad  ?

How to enable spell check in Notepad ?

InstalltheSpellCheckerpluginviaPlugins>PluginsAdminbysearchingforandinstallingSpellChecker,thenrestartNotepad .2.UseitbynavigatingtoPlugins>SpellChecker>CheckCurrentDocumenttohighlightmisspelledwordswithredunderlines.3.Customizethelanguageb

Oct 16, 2025 pm 12:12 PM
Spell Check
How to fix the 'This app has been blocked for your protection' UAC message in Windows?

How to fix the 'This app has been blocked for your protection' UAC message in Windows?

Ifyousee"Thisapphasbeenblockedforyourprotection,"trythesesteps:1.UnblockthefileviaProperties.2.RunitfromanelevatedCommandPrompt.3.TemporarilydisableSmartScreeninWindowsSecurity.4.AddtheapptoDefender’sexclusionlist.5.AdjustGroupPolicy(Pro/En

Oct 16, 2025 pm 12:11 PM
How to get user input in C

How to get user input in C

To use cin, you need to include the header file and introduce the std namespace; 2. Read input from the keyboard through the >> operator. For example, cin>>age can obtain integers, and continuous input is achieved with multiple >> operators.

Oct 16, 2025 pm 12:10 PM
How to fix 'Wi-Fi doesn't have a valid IP configuration' on Windows

How to fix 'Wi-Fi doesn't have a valid IP configuration' on Windows

IfyourWindowsdeviceshows"Wi-Fidoesn'thaveavalidIPconfiguration,"trythesesteps:1.ReleaseandrenewIPaddressviaCommandPrompt.2.ResetTCP/IPstack.3.Disableandre-enabletheWi-Fiadapter.4.UpdateorreinstalltheWi-Fidriver.5.Runthebuilt-innetworktroubl

Oct 16, 2025 pm 12:09 PM
Why is my IntelliSense not working in VSCode?

Why is my IntelliSense not working in VSCode?

First,ensurethecorrectlanguageextensionisinstalledandupdated.ThenverifyIntelliSensesettingslikeeditor.quickSuggestionsareenabled,confirmtheproperlanguagemodeinthestatusbar,andreloadthewindoworrestartthelanguageserverifneeded.

Oct 16, 2025 pm 12:08 PM
vscode
How to use __get, __set, __isset and __unset magic methods in PHP

How to use __get, __set, __isset and __unset magic methods in PHP

PHP's magic methods __get, __set, __isset, and __unset are used to control operations on undefined or inaccessible properties in a class. __get($name) is called when reading non-existent or inaccessible attributes, and is suitable for lazy loading or dynamic data access; __set($name,$value) is triggered when writing such attributes and can be used for data validation or filtering; __isset($name) is executed when isset() is used to check attributes, and a Boolean value needs to be returned to indicate whether the attribute exists; __unset($name) takes effect when unset() is called to delete attributes, and is often used to clean up internally stored data. These methods are only triggered when the property is not public,

Oct 16, 2025 pm 12:07 PM
How to implement pagination with large datasets in MySQL efficiently?

How to implement pagination with large datasets in MySQL efficiently?

UsekeysetpaginationinsteadofOFFSET-LIMITforbetterperformance.1.First,querywithORDERBYandLIMIT:SELECTid,nameFROMusersORDERBYidLIMIT10.2.Then,fetchnextpageusinglastseenvalue:SELECTid,nameFROMusersWHEREid>100ORDERBYidLIMIT10.Thisavoidsscanningskipped

Oct 16, 2025 pm 12:06 PM
How to use the HTML5 time element for dates and times

How to use the HTML5 time element for dates and times

TheHTML5timeelementrepresentsdatesandtimesinamachine-readableformatusingthedatetimeattribute,enhancingaccessibilityandSEO.Itdisplayscustomtexttouserswhileprovidingprecisetemporaldatatomachines.Fordates,useYYYY-MM-DD;fortimes,useHH:MMorHH:MM:SS,option

Oct 16, 2025 pm 12:05 PM
How to change the scroll direction of my mouse in Windows?

How to change the scroll direction of my mouse in Windows?

ToreversemousescrolldirectioninWindows,trythesesteps:1.AdjustinSettingsunderDevices>Mouse.2.ModifytheFlipFlopWheelregistryvalue.3.Usethird-partytoolslikeMicrosoftPowerToysforadvancedcontrol.

Oct 16, 2025 pm 12:03 PM
mouse 滾動(dòng)方向
How to change the mouse pointer size and color in Windows 11? An accessibility tutorial.

How to change the mouse pointer size and color in Windows 11? An accessibility tutorial.

Ifthemousepointerishardtosee,improvevisibilitybyadjustingitssizeandcolorinWindows11:1.OpenSettings>Accessibility>Mousepointerandtouchtochangesizeandcolor.2.Enableahighcontrastthemeforboldervisibility.3.UseControlPanel’sMousesettingstoapplycusto

Oct 16, 2025 pm 12:02 PM
How to fix the Blue Screen of Death in Windows? An introduction to BSOD errors.

How to fix the Blue Screen of Death in Windows? An introduction to BSOD errors.

IfyouencountertheBlueScreenofDeath,trythesesteps:1.Restartyourcomputer.2.BootintoSafeMode.3.Updateorrollbackdrivers.4.RunWindowsMemoryDiagnostic.5.CheckdiskforerrorsusingSFCandCHKDSK.6.Uninstallrecentsoftwareorupdates.7.Performasystemrestore.

Oct 16, 2025 pm 12:00 PM
How to use the ipconfig command to release and renew your IP address in Windows? A network reset guide.

How to use the ipconfig command to release and renew your IP address in Windows? A network reset guide.

Ifyouhavenetworkissues,tryreleasingandrenewingyourIPaddress:1.OpenCommandPromptasadmin.2.Runipconfig/release.3.Runipconfig/renew.4.VerifythenewIPwithipconfig.

Oct 16, 2025 am 11:59 AM
How to Sort an Array of Objects in JavaScript?

How to Sort an Array of Objects in JavaScript?

Usethesort()methodwithacustomcomparefunction:forstrings,uselocaleCompare();fornumbers,subtractvalues;formultipleproperties,chaincomparisons;andnormalizecasewithtoLowerCase()forcase-insensitivesorting.

Oct 16, 2025 am 11:58 AM
Array sort
How to align text to the right in html?

How to align text to the right in html?

ToaligntexttotherightinHTML,usetheCSSpropertytext-align:right;viainlinestylesorCSSclasses.Forsingleelements,applystyle="text-align:right;"directly.Forbettermaintainability,defineaclasslike.right-align{text-align:right;}ininternalorexternalC

Oct 16, 2025 am 11:56 AM