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async and await are used in 21 Vue to realize synchronization and asynchrony The scenario is as follows: the current logic is to modify the series.data in echart's option according to the return data of the back-end API, and then execute the setOption method to render the icon. However, the problem is that the back-end API can return data norma ...

1, What are instructions? In vue, the instruction starts with v -, which is a special custom inter line attribute. The expected value of the instruction attribute is an expression. The responsibility of the instruction is to apply some behaviors to the DOM accordingly when the value of the expression changes. Only v-for is outside a class, fol ...

Preface It feels good to write a widget in your project today and share it with you. If you need to use it later, just take a look at this blog Let's start with the concept of SKU and SPU: SPU (Standard Product Unit) Standardized Product Unit. It is the smallest unit of aggregation of commodity information. It is a set of reusable, easily re ...

What is Vuex? Vuex is a state management pattern developed specifically for Vue.js applications. It uses centralized storage to manage the state of all components of the application, and uses corresponding rules to ensure that the state changes in a predictable way. Vuex is also integrated into Vue's official debugging tool devtools extension ...

Vue 3.0 It was finally released on September 18, 2020 and has been used Typescript A large-scale reconstruction has been carried out, which has brought Composition API RFC Version, similar React Hook Write Vue in the same way. You can customize your own hook to make users more flexible. Some new features of vue 3.0. setup()ref()reactive()isRe ...

Teach you how to encapsulate general axios in vue project preface Tip: Here you can add the general contents to be recorded in this article: For example, with the continuous development of artificial intelligence, machine learning technology is becoming more and more important. Many people have started learning machine learning. This pa ...

Using keepAlive stay app.vue Two in Chinese <keep-alive> <! -- view components that need to be cached -- > <router-view v-if="$route.meta.keepAlive"> </router-view> </keep-alive> <! -- view components that do not require caching -- > <router-view v-if="!$ ...

Before I start, let me ask you a question: we now have an Employee class. @Data @AllArgsConstructor public class Employee { private Integer id; private Integer age; //Age private String gender; //Gender private String firstName; private String lastName; } Do you know how to sort a List set of Employee objects in reverse or ...

Role-based access control (RBAC) One way to restrict system access to authorized users is to define policy-independent access control mechanisms around roles and privileges, and the components of RBAC make it easy to perform user assignments. Within the organization, various jobs will be created role .Permissions to perform certain actions ha ...

preface In a project, it is often necessary to display data at the view level immediately. Sometimes, because of asynchronous data transfer, the page will not be displayed immediately on the page. In this case, you need to use the nextTick method provided by Vue. The main reason is that Vue's data vi ...