To achieve partial refresh of the page, we only need to implement the re-rendering of the local component (dom). In Vue, the easiest way to achieve this effect is to use the v-if directive. In Vue2, in addition to using the v-if instruction to re-render the local dom, we can also create a new blank component. When we need to refresh the local page, jump to this blank component page, and then jump back in the beforeRouteEnter guard in the blank component. original page. As shown in the figure below, how to click the refresh button in Vue3.X to reload the DOM within the red box and display the corresponding loading status. Since the guard in the component in the scriptsetup syntax in Vue3.X only has o

Vue implements the blog front-end and needs to implement markdown parsing. If there is code, it needs to implement code highlighting. There are many markdown parsing libraries for Vue, such as markdown-it, vue-markdown-loader, marked, vue-markdown, etc. These libraries are all very similar. Marked is used here, and highlight.js is used as the code highlighting library. The specific implementation steps are as follows: 1. Install dependent libraries. Open the command window under the vue project and enter the following command npminstallmarked-save//marked to convert markdown into htmlnpmins

vue3+vite:src uses require to dynamically import images and error reports and solutions. vue3+vite dynamically imports multiple images. If vue3 is using typescript development, require will introduce image errors. requireisnotdefined cannot be used like vue2 such as imgUrl:require(' .../assets/test.png') is imported because typescript does not support require, so import is used. Here is how to solve it: use awaitimport

The final effect is to install the VueCropper component yarnaddvue-cropper@next. The above installation value is for Vue3. If it is Vue2 or you want to use other methods to reference, please visit its official npm address: official tutorial. It is also very simple to reference and use it in a component. You only need to introduce the corresponding component and its style file. I do not reference it globally here, but only introduce import{userInfoByRequest}from'../js/api' in my component file. import{VueCropper}from'vue-cropper&

Vue3 is currently one of the most popular frameworks in the front-end world, and the life cycle function of Vue3 is a very important part of Vue3. Vue3's life cycle function allows us to trigger specific events at specific times, enhancing the high degree of controllability of components. This article will explore and explain in detail the basic concepts of Vue3's life cycle functions, the roles and usage of each life cycle function, and implementation cases, to help readers quickly master Vue3's life cycle functions. 1. Vue3’s life cycle function

Preface Whether it is vue or react, when we encounter multiple repeated codes, we will think about how to reuse these codes instead of filling a file with a bunch of redundant codes. In fact, both vue and react can achieve reuse by extracting components, but if you encounter some small code fragments and you don’t want to extract another file, in comparison, react can be used in the same Declare the corresponding widget in the file, or implement it through renderfunction, such as: constDemo:FC=({msg})=>{returndemomsgis{msg}}constApp:FC=()=>{return(

vue3+ts+axios+pinia realizes senseless refresh 1. First download aiXos and pinianpmipinia in the project--savenpminstallaxios--save2. Encapsulate axios request-----Download js-cookienpmiJS-cookie-s//Introduce aixosimporttype{AxiosRequestConfig ,AxiosResponse}from"axios";importaxiosfrom'axios';import{ElMess

In C++, function pointers require proper destruction and life cycle management. This can be achieved by manually destructing the function pointer and releasing the memory. Use smart pointers, such as std::unique_ptr or std::shared_ptr, to automatically manage the life cycle of function pointers. Bind the function pointer to the object, and the object life cycle manages the destruction of the function pointer. In GUI programming, using smart pointers or binding to objects ensures that callback functions are destructed at the appropriate time, avoiding memory leaks and inconsistencies.