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preface In this article, we will learn how to use Promise and how to implement our own Promise. The explanation is very clear. We will implement it step by step in the whole process, with detailed notes and principle explanation. If you think this article is helpful to you, ❤️ Follow + like ❤️ Encourage the author, the official account and the ...

Focus on official account dry cargo WeChat public: K brother crawler, keep sharing crawler advance, JS/ Android reverse technology dry goods! statement All contents in this article are for learning and communication only. The packet capturing content, sensitive website and data interface have been desensitized. It is strictly p ...

Child components can use $emit to let parent components listen to custom events. vm.$emit( event, arg ); // Trigger the event on the current instance. Arg is the parameter passed to the parent component vm.$on( event, fn );// Run FN after listening for event events vue It also implements the observer mode and provides methods such as subscri ...

Initialize the basic structure of the package Create a new demo-tools folder as the package directoryIn the demo-tools folder, create the following three new files package.json (Package Management Profile) index.js (entry file for package) README.md (package documentation) 1. Initialize package.json { "name":"demo-tools", "version": ...

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1, What is a time object Store recording time data 2, Time object creation syntax Create time object through constructor There are no parameters to create a time object of the current time by default var variable = new Date(); Set parameters to create a time object at a specified time var variable = new date (parameter); //Time ...

#0. The console commands prompted to download in the front row can be pasted directly by shift+insert without typing a little. Path redirection starting with #1 multiple slashes There is more than one / match here, so it is changed to greedy regular expression, which is / \ / + / g export function cleanPath (path: string): string { retur ...

prefaceIt is still necessary to learn the front-end algorithm. Not to mention that large factories test the algorithm in interviews, but when doing the permission module, if you don't understand the algorithm, you can't write the user-defined traversal of the tree structure.Today, I will make a summary of the dynamic programming and dfs encount ...

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1, Basic use of Vue Router 1. Install Vue router plug-in npm install vue-router --save Link: Vue Router documentation 2. Create routing instance import Vue from 'vue' import VueRouter from 'vue-router' import listTemplate from '@/view/demo/listTemplate.vue' Vue.use(VueRouter) const routes = [ { path: '/demo', component: l ...