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Author: Fernando Doglio Translator: front end Xiaozhi Source: medium There are dreams and dry goods. Wechat search [Daqian world] pays attention to this dish washing wisdom who is still washing dishes in the early morning. This article GitHub https://github.com/qq449245884/xiaozhi It has been included. There are complete test sites, mat ...

1. Problem description In Vue or React projects, we often encounter problems such as the data dictionary of the drop-down box. The data dictionary is obtained when the page is created, and then parsed and displayed. When different pages use the same data dictionary or the page is opened repeatedly, they will send the same request many times, w ...

Vue provides a more general way to observe and respond to data changes on Vue instances: listening properties. 1. General usage <template> <div> <input v-model="question"> <span>{{ copyQuestion }}</span> </div> </template> <script> export default { data() { r ...

The front end of Xiaogao's not quite walking – Vue preface In this chapter, we will learn Vue's template syntax, Vue's conditional statements, and Vue's circular statements. What you need to know before reading this tutorial: HTML CSS JavaScript This tutorial mainly introduces vue3 Use of version X. 1, Vue templ ...

History function Objective: to realize the function of searching history Initialize history data data () { return { // Search keywords q: '', // Historical keywords history: JSON.parse(localStorage.getItem('keywords') || '[]') } }, The history is displayed only when there is data <div class= ...

Life cycle of vue The process of vue instance from creation to destruction is the life cycle. vue each component is independent, and each component has its own life cycle. Life cycle makes it easier for us to form better logic when controlling the whole vue. It can be divided into three stages: Mount stage, update stage and destroy stage. ...

1. General Proxy is used to modify the default behavior of some operations, which is equivalent to making modifications at the language level. Therefore, it belongs to a kind of "meta programming", that is, programming the programming language. Proxy can be understood as setting up a layer of "interception" before the targ ...

https://www.bilibili.com/video/BV1SE411H7CY Review of some js contents Array related methods length gets the number of elementspush add aftershift removes the element on the leftsplice(index,num) deletes elements. Where does index start to delete elements? num is how many elements are deleted Use js to select elements and bind click events ...

All along, people who play springcloud are basically playing springboot1 x. Many related components of spring cloud (Dalston version) are used for configuration center, service registration and discovery. The gateway uses LB made by Netflix for springboot, etc., but these things are too heavy and complex. In a k8s based iaas service system, it ...

Previously, we learned the responsive principle of Vue, and we know that the underlying layer of vue2 is through object Defineproperty to realize data responsive, but this alone is not enough. The data defined in data may not be used for template rendering. Modifying these data will also start setter and lead to re rendering. Therefore, Vue has ...