Article Introduction：Use in Vue to preserve the state of component switching. 1. Enable cache by wrapping dynamic components in tags; 2. Use include and exclude attributes to control the cache scope; 3. Components need to define the name attribute and use it with v-if; 4. The cache component will trigger activated and deactivated life cycle hooks; 5. Applicable to Tab switching, form wizard, search and details pages and other scenarios, but excessive use should be avoided to avoid affecting performance.

2025-07-12 comment 0  292

Article Introduction：Five key points to be noted for improving accessibility in Vue projects: First, use semantic HTML tags, such as buttons, links, and form controls to cooperate; Second, manage focus when dynamic content updates, such as focusing on the main content after page switching, focusing on internal elements after pop-up windows, and using aria-live prompts to update in real time; Third, keyboard navigation control tab index, add tabindex="0" to make the elements focusable, avoid abuse of high-value tabindex, and reasonably set tab process; Fourth, add alternative text to pictures and icons, and must have alt attributes, icon fonts or SVG to add aria-label or aria-hidden according to the situation; Fifth, continue to pay attention to a

2025-07-07 comment 0  464

Article Introduction：The core difference between localStorage and sessionStorage lies in data persistence and scope. 1. Data life cycle: localStorage data is stored for a long time unless manually cleared, and sessionStorage data is cleared after closing the tab; 2. Scope difference: localStorage is shared among all tabs on the same website, and sessionStorage is stored independently; 3. Usage scenario: localStorage is suitable for saving long-term data such as user preferences and login status, sessionStorage is suitable for temporary form data or single session process; 4. API consistency: two operation methods

2025-07-15 comment 0  487

Article Introduction：The core method of using navigation guards for authentication in Vue.js is to combine beforeEach front guards with routing meta information. 1. Use router.beforeEach to determine whether the user has been authenticated before routing switching; 2. Use to.meta.requiresAuth to mark the pages to be protected; 3. Use localStorage or Vuex/Pinia to manage the login status and ensure that it can be obtained by the guard after update; 4. Set a whitelist to allow unlogged accessed pages to avoid dead loops; 5. Control asynchronous operations such as token verification to prevent duplicate requests. The entire process relies on the collaboration of pre-guarding, routing meta information and state management to ensure access control

2025-06-30 comment 0  947

Article Introduction：The difference between LocalStorage and SessionStorage lies in the life cycle and applicable scenarios. 1. LocalStorage is persistently stored, and the data is valid for a long time. It is suitable for saving user preferences, login status and other information. It is shared with the same source page, with a capacity of about 5MB; 2. SessionStorage is only valid during the current session. The data is cleared after closing the tab page. It is suitable for temporary status such as the form progress saving, and each tab page does not affect each other. Both operate in key-value pairs, and the API is similar, but sensitive data should not be stored in it. When choosing, decide based on whether you need to cross pages or long-term use: you need to use LocalStorage for a long time, and SessionStorag for temporary status.

2025-07-02 comment 0  230

Article Introduction：LocalStorage is used to persist in storing user preferences and login status, and save data for a long time; SessionStorage is used to temporarily store session data, and automatically clear after closing the tab; IndexedDB is suitable for storing a large amount of structured data or files, and supports asynchronous operations. 1. Use LocalStorage when saving a small amount of string data and needs to be saved for a long time; 2. Use SessionStorage when temporarily saving form drafts and other session data; 3. Use IndexedDB when storing a large amount of data or files offline. No sensitive information is stored in any of the three, and appropriate methods should be selected according to the scenario to improve performance and user experience.

2025-07-25 comment 0  724

Article Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0  683

Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w

2025-01-10 comment 0  833

Article Introduction：Conditional Column CountingConsider a table named "Jobs" structured as follows:jobId, jobName, Prioritywhere "Priority" is an integer between 1...

2025-01-10 comment 0  843

Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI What is the Interview Questions CLI? The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview

2025-01-10 comment 0  1461

Article Introduction：Improved Methods for Trimming Leading Zeros in SQL ServerThe conventional approach for trimming leading zeros in SQL Server involves employing the...

2025-01-10 comment 0  673

Article Introduction：ShouldSerialize() vs Specified Conditional Serialization PatternConditional serialization is crucial to selectively control serialization...

2025-01-10 comment 0  1456

Article Introduction：Recursive Query Resulting in Recursion Depth Limit ExceededThis query faced a recurring error due to exceeding the maximum recursion limit of 100....

2025-01-10 comment 0  1279

Article Introduction：Soft Deletes: A Question of DesignThe topic of soft deletes, a mechanism that "flags" records as deleted instead of physically removing them, has...

2025-01-10 comment 0  1066

Article Introduction：JavaScriptSerializer.Deserialize: Mapping Field Names in JSON to .Net Object PropertiesQuestion:How can you map a field name in JSON data to a...

2025-01-10 comment 0  511

Article Introduction：Rotating an Image in WinFormsThis question addresses the need to rotate an image within a Windows Forms application, particularly for indicating...

2025-01-10 comment 0  1225

Article Introduction：Database Table Update: Aligning Columns with Referenced ValuesYour question pertains to updating a database table where the QuestionID column...

2025-01-10 comment 0  817

Article Introduction：Conditional Serialization Patterns: ShouldSerialize() vs. SpecifiedIntroductionXmlSerializer offers two patterns for conditionally serializing...

2025-01-10 comment 0  681

Article Introduction：Soft Deletes: A Boon or a Bane?The question of soft deletes, an alternative to permanent data deletion, has elicited diverse opinions within the...

2025-01-10 comment 0  664

Article Introduction：There are a lot of crafting stations that you can make in Terraria. This ranges from simple anvils to unique stations meant for one specific type of resource. Early into the game, you'll be able to make your own Loom, which is primarily used to make

2025-01-10 comment 0  1342