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Tag: javascript
Is everything an object in JS? Just read this one
December 6, 2023
by Melissa Pratt
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When you first started learning JavaScript, did you come across a lot of books, tutorials, and people who said "everything in JavaScript is an object"?...
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Algorithm problem
December 6, 2023
by Dr. Owen James
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Calculates how many substrings of the text are in this string. A double loop is used to iterate over two strings, one in the forward...
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DOM (Document Object Model)
December 6, 2023
by Craig Patchett
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The DOM(Document Object Model) is a programming interface for HTML and XML documents that represents a document made up of multiple layers of nodes through...
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A brief introduction to Node.js
December 6, 2023
by James Klein
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Node.js is a JavaScript environment based on the Chrome V8 engine. Node.js uses an event-driven, non-blocking I/O model, making it lightweight and efficient
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Handling repeated requests
December 6, 2023
by Dishani Sodhi
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Each request is affected by the network and other factors, and the return time of the response cannot be determined. As a result, the return...
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Data type (1) Typeof, undefined, null
December 6, 2023
by Juan Young
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This series is aimed at front-end beginners. Js data types are divided into seven types, including six simple data types: Undefined, Null, Boolean, Number, String,...
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Basic js series – Overview of data types
December 6, 2023
by Michele Brock
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JavaScript mainly watch ruan Yifeng teacher's JavaScript tutorial, this stage is going to go through quickly, mainly record some key points that JS is different...
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The new keyword
December 6, 2023
by 張佳穎
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What does new new do? It creates a brand new instance of an object that is linked to the constructor by a prototype chain. It...
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Draw arbitrary line segments in the visual scene and measure the distance
December 6, 2023
by Miranda Chen
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In digital twin visualizations, you may run into the problem of measuring the distance between different objects in the digital twin visualizations. Through this measurement,...
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How do I prevent developers from manipulating DOM objects on web pages?
December 6, 2023
by Nigel Booth
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In general, on an HTML page, you can always access the HTML elements you want to access through the DOM API and manipulate them. If...
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React scaffolding
December 6, 2023
by Loretta Hayden
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Recently, the company has set up several different business projects, which are independent of each other but have similar underlying architecture. It has become common...
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【JavaScript】12. Common object methods
December 6, 2023
by Shannon Bradley
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This article mainly introduces some common JavaScript object methods, including shallow copy, properties, prototypes, enumeration, definition, string and other related methods
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Programming approach — AOP (Aspect oriented programming)
December 6, 2023
by Aidan Reardon
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What is AOP (aspect oriented programming) a technique for dynamically and uniformly adding certain functionality to a program without modifying the source code by precompiling...
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“Strict mode ‘Use Strict'”
December 6, 2023
by Heather Montgomery
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JS 'use strict' should be familiar to everyone, which literally means that code is written with strict behavior patterns. But what are the rules that...
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A few words about THE JS prototype
December 6, 2023
by Tracy McGill
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A, the prototype of this thing, when we interview always will be asked, sometimes is really not good answer, now I will briefly summarize the...
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Why setTimeout instead of setInterval?
December 6, 2023
by Kevin Mendoza
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If you write a timer in JavaScript that specifies that a piece of code should be executed once in a while, the first response is...
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What is an Event loop
December 6, 2023
by Harriet Simpson-Cox
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JS is known as a non-blocking single-threaded language because it was originally created to interact with browsers. If JS is a multithreaded language, we may...
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In-depth understanding of prototype Chains in JS (part 1)
December 6, 2023
by Tiya Wali
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What is a prototype? You need to start with the fact that every function we create has a prototype property and that property is a...
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Js syntax base – statement
December 6, 2023
by Andrew Wheeler
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A for-in for-in statement is a strict iteration statement that enumerates the output of non-signed key attributes in an object: The name and age attributes...
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Javascript’s almost mythical concept: closures
December 6, 2023
by Jonathan Harris-Watts
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For those of you who have experience with JavaScript but never really understood the concept of closures, understanding closures is something of a rebirth. Closures...
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JS Basic part study notes
December 6, 2023
by Lauren Johnson
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Sorted out the previous JS study notes, the basic part of the knowledge, as well as the learning summary. This section describes operations on the...
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JavaScript: Know regular expressions
December 6, 2023
by Scott Hernandez
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A regular expression is a search pattern formed by a sequence of characters. When you search for data in text, you can use search patterns...
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The use of vUE filter
December 6, 2023
by Lisa Daniel
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<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.Vue.console.window.currentTime:Date.return data.return d.getFullYear()+'-'+(d.getMont...
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What is a cross-domain & cross-domain solution
December 6, 2023
by Mrs. Sylvia Day
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Cross-domain refers to a document or script in one domain trying to request resources in another domain. Resource jump: A link, form submission. Resource embedding:...
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Talk about the V8 engine to JS implementation process
December 6, 2023
by Jayant Chadha
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The above C code and JavaScript code declare variables in a significantly different way, before the declaration of variables first defined variable types, and JS...
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JS data structure and algorithm – tree – binary search tree
December 6, 2023
by Ricky Kerr-Fletcher
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In this section, the advantages and disadvantages of array, linked list and hash table are briefly analyzed, and then the tree structure is introduced. After...
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React + KOa +MongoDB
December 6, 2023
by Saanvi Hari
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This article will introduce how to use React + KOa +MongoDB to develop a simple page, and write several simple interfaces to implement the database...
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JS Knowledge Review
December 6, 2023
by 李佩珊
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1. What are the basic data types of JS? Basic types: Number, String, Null, Boolean, Undefined Reference data type: Object 2. js What types are...
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Object.defineproperty () : VUE3 is no longer used but you should know about it
December 6, 2023
by Neil Watts
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Syntax: object.defineProperty (obj, prop, Descriptor) Parameter Parameter Name Mandatory whether to use obj Mandatory Target Object prop Mandatory Property name desc to define or modify
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