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Use throttling anti chattering function (Performance Optimization) So how to use it in vue: In public methods (such as untils.js), add function anti shake and throttling methods // Anti shake export function _debounce(fn, delay) { var delay = delay || 200; var timer; return function () { var th = this; var args = ...

(pay attention to whether I can accept the update push) I Knowledge supplement 1.1. (understand) this in methods 1.1.1. Arrow functions cannot be used If we want to use data to return the data in the object in methods, this must have a value, and the data in the data return object should be available through this. So can this be a windo ...

Write in front Code refactoring is an inevitable work in the process of product continuous function iteration. The so-called refactoring is to optimize and adjust the internal implementation without changing the input and output of the program, that is, ensuring the existing functions. This is the second article in the "refactoring, taste ...

1. Custom instruction registration User defined instructions can only be used after registration. Vue provides two registration methods: Global registration: Vue directive(id, [definition])； ID: instruction name, [definition]: user-defined object or function object. The function to be realized by the instruction is defined in this object.Loc ...

There are three levels of DOM events DOM level 0 events DOM0 level time can be divided into two types: one is to directly add execution statements in the tag, and the other is to define execution functions. <input type="text" id="test"> <input type="button" value="button" onclick="alert(document.getElementById('test').value)"> &l ...

Generic of [Typescript Introduction Manual] 🚀 [TypeScript Introduction Manual] records the concept of Ts with high attendance, which is designed to help you understand and be familiar with Ts 🎉 This series will continue to be updated and corrected, focusing on the points you are interested in. Welcome to leave messages and exchange, and ...

Note: esm below refers to ECMAScript Module, that is, the module syntax of ES6 (import/export), and cjs refers to CommonJS (module.exports/require) Browser side ESM module loading When the browser uses the esm module syntax to import/export or load the ES6 module through the script tag, type="module" must be added so that the browse ...

There are so many differences between for loop and forEach in JavaScript!In normal work, there are several ways to loop through the array, but the most commonly used should be the for loop and the forEach method using the array.Today, let's fully compare the difference between the two. Please watch it.First, we define two arraysconst arr1 = ['a ...

13. Voice module 13.1 association between audio and scene (sound source and listener) Threejs provides a series of Audio related API s: Audio audio, position Audio, listener AudioListener, Audio analyzer, Audio loader, AudioLoader. Threejs classes such as Audio, location Audio and PositionalAudio essentially encapsulate the native Web Au ...

To realize inheritance, we first need a parent class. In js, there is actually no concept of class. In es6, although class is very similar to class, it is actually just a syntax sugar in es5 Prototype chain inheritance The instance of the parent class is used as the prototype of the child class function Woman(){ } Woman.prototype= new Peopl ...