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inherit Now, we have a drag function to implement: suppose there is a div and we need to implement the drag function on it, then according to our usual way, the implementation method is as follows: // Process oriented const mydiv = document.querySelector(".mydiv"); mydiv.onmousedown = e => { let ev = e || window.event; let x = ev.c ...

[HTML of reconstructing front-end knowledge system] changes brought by HTML5 to web page audio introduction I believe everyone is familiar with music playback, but long before the previous music playback, your browser will ask you whether to download the flash plug-in. Now, however, it is estimated that some young developers don't need to kno ...

vue.config.js configuration item After the vue-cli3 scaffold is erected, there is no Vue in the project directory config. JS file, which needs to be created manually Create Vue config. js vue. config. JS (equivalent to the previous webpack.config.js) is an optional configuration file. If this file exists in the root directory of the projec ...

When learning becomes a habit, knowledge becomes common sense. Thank you for your attention, likes, collections and comments.The new video and articles will be sent to WeChat official account for the first time. Li YongningThe article has been included in github warehouse liyongning/blog , welcome to Watch and Star.Special instructionsDue to th ...

Website recommendation ts-playground ts Chinese Manual Introduction to ts Type basis Strong type and weak type Strongly typed language: it is not allowed to change the data type of a variable unless it is castWeakly typed language: variables can be assigned different data types Static type and dynamic type Statically typed language: det ...

preface Finally, I want to learn from you. For our program apes, we will never be single! No object? Impossible! Just one New, ha ha!!! No more nonsense. Let's learn JS objects together! 1, What is the object? Definition: in object-oriented programming, everything is an object! Object is a concrete thing. For example, a star is not an ...

Life is meaningless if you don't write code to pretend. It's all 2020. If you're doing front-end development and you don't even use canvas, what do you want to do? Following the author, let's see what canvas is, what it can be used for, and which products are made by canvas. Introduction to Canvas 1.canvas is a new tag for html5, which is a ...

MySQL view, stored procedure, variable, function, transaction 1. View Meaning: virtual table, but it is the same as that of ordinary table MySQL5. After 1, the characteristics appear through the data of dynamic production Syntax: create view View name as Query statement Create syntax Does it actually occupy physical ...

prefacestay "A blog with VuePress + Github Pages" In, we used VuePress to build a blog. The final effect is as follows: TypeScript Chinese document. Because VuePress's built-in search will only build the search index for the title, h2, h3 and tags of the page. If you need full-text search, you can use Algolia search. This article talk ...

Family, every other day with new knowledge to meet you! Today we are learning how to get and control HTML elements in our JS. If you want to learn JavaScript well, you should persevere in learning it. If you don't understand anything, you can confide in me or comment below and you will reply when you see it. I How to get HTML elements in JS ...