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Best practices for Vue component design
Eachcomponentshouldhaveasingleresponsibility,splittingcomplexonesintosmallerpartslikeUserProfile,UserProfileView,andUserProfileEditFormforeasiertestingandreuse.2.UsePascalCaseforcomponentfilenamesandkebab-casewhenusingthemintemplates,withclear,descri
Aug 04, 2025 am 08:55 AM
What is the purpose of the is attribute on a component tag in Vue?
TheisattributeinVueensurescorrectcomponentrenderingwithinHTMLelementsthathavechildelementrestrictions,suchas.2.InVue2,orallowscomponentresolutionintemplates.3.InVue3,isusedfordynamiccomponents,whileis="vue:my-row-component"innativetagslikee
Aug 04, 2025 am 08:32 AM
How to use JWT tokens in Vue?
The core process of using JWT in Vue projects includes: obtaining and saving tokens, carrying tokens in requests, parsing token information, and processing token expiration. 1. After successful login, get the JWT from the backend and save it to localStorage or sessionStorage; 2. Use the axios interceptor to automatically add the token to the request header; 3. If you need to read user information, you can parse the payload part of the token through the tool function; 4. Check whether the token expires. If it expires, clear the token or try to refresh. At the same time, 401 errors can be handled uniformly in the response interceptor.
Aug 04, 2025 am 08:12 AM
What is the best way to handle large lists for performance in Vue?
Usevirtualscrollingtorenderonlyvisibleitems,significantlyimprovingperformanceforlargelists.2.Alwaysuseuniqueandstablekeys(e.g.,item.id)inv-fortooptimizeDOMdiffing.3.MinimizereactivitybyusingmarkRaw()forstaticlistitemstoreduceoverhead.4.Considerpagina
Aug 04, 2025 am 05:25 AM
What are navigation guards in Vue Router and how to use them
Navigation Guard is a function used in VueRouter to control routing jumps. It decides whether to allow navigation by writing logic. 1. Global Guard: BeforeEach is executed before each navigation, and must call next(), which is often used for authentication; beforeResolve is executed after the guard is parsed in the component; afterEach is executed after the navigation is completed, without next(), which is used to set the title or bury points. 2. Route exclusive guard: Use beforeEnter in routing configuration, which applies to specific route logic. 3. Guard in component: beforeRouteEnter is called before entering, and this cannot be accessed; beforeRouteUpdate is reused during component
Aug 04, 2025 am 05:18 AM
How to handle file uploads in a Vue form?
UsereftoaccessthefileinputbecauseVuedoesn’ttrackfilesreactively;2.SendthefileviaFormDatatothebackend,whichautomaticallysetsmultipart/form-dataheaderswhenusingaxios;3.Formultiplefiles,addthemultipleattributeandconvertFileListtoanarray,appendingeachfil
Aug 04, 2025 am 03:56 AM
How to integrate a UI library like Vuetify or Quasar into a Vue project?
To integrate Vuetify in a Vue project, first create a Vue project, then install Vuetify and icon fonts, then import and configure a Vuetify instance in main.js, and finally use the Vuetify tag in the component to complete the integration. 2. When using Quasar, it is recommended to create projects through QuasarCLI to obtain full functional support. You can also try manually installing Quasar to existing Vue projects, but only basic functions can be implemented and not recommended. 3.Vuetify can be easily integrated and supports manual configuration in any Vue project, while Quasar needs to rely on its CLI for building optimization and full functionality enabled, so if you need a complete experience, use QuasarCLI.
Aug 04, 2025 am 03:38 AM
What is two-way data binding in Vue and how is it achieved with v-model
Two-waydatabindinginVuesynchronizesthedatamodelandtheUI,sochangesineitherupdatetheotherinrealtime.2.Itisprimarilyachievedusingthev-modeldirective,whichcombinesdatabindingandeventhandling.3.v-modelworksbybindinganinput’svaluetoadatapropertyandlistenin
Aug 04, 2025 am 03:06 AM
How to use mixins for reusable functionality in Vue
MixinsinVue.jsarereusableobjectscontainingcomponentoptionslikemethods,data,andlifecyclehooksthatcanbesharedacrosscomponents.2.Touseamixin,defineitasaJavaScriptobjectandincludeitinthecomponent’smixinsarray,whereoptionsaremerged—componentdataoverridesm
Aug 04, 2025 am 01:09 AM
How to handle reactive state changes in nested objects in Vue?
In Vue3, nested objects are responsive by default and can be modified directly; in Vue2, new or deep nested properties will not respond automatically, so you need to use this.$set() or replace the entire object. 1. Vue3 uses Proxy to implement deep responsiveness, and both reactive() and ref() support direct nested updates; 2. Vue2 needs to add new attributes through Vue.set(); 3. Replace the parent object to trigger responses; 4. Predefined all nested fields during initialization; 5. It is recommended to use Pinia or Vuex to manage complex states. Therefore, correctly handling version differences and structured data in advance avoids responsiveness issues.
Aug 03, 2025 am 10:13 AM
How to write a unit test for a Vue component that uses Vuex?
Create a test-specific Vuexstore and initialize it with createStore; 2. Inject store through mount's global.plugins; 3. Use jest.fn() to simulate actions to verify calls; 4. Test the responsiveness of the component when the store state changes; 5. Optionally mock the store partially or use @testing-library/vue; finally implement isolated and reliable unit testing to ensure that the component interacts correctly with Vuex, the test is complete and maintainable.
Aug 03, 2025 am 10:12 AM
What is Vite and why is it becoming a popular choice for Vue projects?
Viteisamodernfront-endbuildtoolthatprovidesfasterdevelopmentbyleveragingnativeESmodules,resultinginnear-instantserverstartandfastHMR;1.ItservesfilesdirectlyviabrowserESM,eliminatingfullbundlingduringdevelopment.2.Itusesesbuildforfastdependencypre-bun
Aug 03, 2025 am 10:03 AM
What is the difference between ref() and reactive() in Vue 3?
InVue3,ref()isbestforprimitivesandstandalonevalues,whilereactive()suitsobjectsandnestedstructures.Useref()whentrackingasinglevaluelikeanumberorboolean,andaccessitvia.value.Usereactive()tomakeentireobjectsreactivewithout.value.Refpreservesreactivitywh
Aug 03, 2025 am 09:39 AM
How to handle content security policy (CSP) in a Vue SPA?
AvoidinlinescriptsandstylesbymovingallJavaScripttoexternalfilesandusingVue’seventhandlersinsteadofinlineonclickattributes.2.UseastrictCSPheaderwithout'unsafe-inline'or'unsafe-eval'byadoptingVue’sruntime-onlybuildandSingleFileComponentstoeliminatethen
Aug 03, 2025 am 08:56 AM
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