Learn about the new ES2021 features
As we all know, the JavaScript specification follows ECMAScript (ES for short). The new ES specification means that some JavaScript features are not included in...
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Tag: javascript
The interview summary
December 7, 2023
by William Ortiz
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The HTTP protocol, https://juejin.cn/post/6977214179149086751#heading-9 (1) the difference between the POST and GET 2. The main characteristic of the HTTP protocol class 3. The HTTP protocol
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A brief introduction to the development and use of JavaScript higher-order functions
December 7, 2023
by Mr. Robert Padilla
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As a JavaScript developer, you'll often use higher-order functions, so it's important that you understand them properly, as this article will explain in detail.
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Asynchrony is the foundation of LJS
December 7, 2023
by 邵雅涵
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The front end of these two years of new technology is overwhelming, a variety of frameworks, tools emerge in endlessly dazzling. Recently, I plan to...
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Working mechanism of JS while learning and translating –26. Three types of polymorphism
December 7, 2023
by Ehsaan Yohannan
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In the real world, a woman can have different roles. She can be a mother, a worker and a wife at the same time. Depending...
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“Two-pointer” Leetcode 209. Smallest subarray of length (medium)
December 7, 2023
by Kanav Sen
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209. The smallest subarray is given an array of n positive integers and a positive integer target. Find the smallest contiguous subarray in the array...
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JavaScript array
December 7, 2023
by 李馨儀
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In JS, array is not a data type. It belongs to Object, which is a special object. JS doesn't really have arrays, it just simulates...
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Desktop notification bar (minimize your H5 to notify messages and return to the notification source)
December 7, 2023
by Michael Mcclain
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If there is a need to open the PC Notification bar on the local H5 page, please try Notification~ Google, Firefox, Safari does not support...
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Custom Webpack Loader to achieve conditional compilation of file dimensions
December 7, 2023
by Ashley Lopez
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In VUE, you can use process.env to access properties in the configuration file and find the corresponding configuration file for different environments. In business code,...
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Native JS implements DOM explosion effects
December 7, 2023
by Jason Dillon
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This sharing is a summary of self-component development, there are still a lot of shortcomings, I hope you give valuable suggestions greatly, learn from each...
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From NodeJS to build the middle layer to talk about the front and back end separation
December 7, 2023
by 張雅惠
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I used nodeJS as the middle layer in the project of Chuangyu before, but I didn't understand the real reason behind it at that time....
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Vue3 the lowest version of the implementation
December 7, 2023
by Luke Blackwell
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In the last article, I talked about the principle of Vue3 responsiveness to Vue3 made an introduction to the implementation principle of Vue3 responsiveness. Presumably,...
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How to handle Async/Await exceptions gracefully?
December 7, 2023
by Brooke Clark
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Exception handling in async/await is confusing. While there are many ways to handle async exceptions, even experienced developers sometimes get it wrong. Suppose you have...
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A console.log() murder
December 7, 2023
by Ms. Sandra Henderson
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See the result: if the print timing object directly, you can get domContentLoadedEventStart value, and through JSON. The stringify or print is timing domContentLoadedEventStart, values...
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JS array and object traversal methods
December 7, 2023
by Leanne Russell
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ForEach method: Iterates through each element of the array, with no return value by default. Filter method: Filters array elements conditionally. Returns an array in...
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Why can’t XMLHTTPRequest cross domains?
December 7, 2023
by Ross Brown-Anderson
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Cross-domain problems, I'm sure you've seen them in your work, and there are solutions to cross-domain problems, but today we're not going to talk about...
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Boy, do you remember the four characteristics of the new operator?
December 7, 2023
by Dr. Sam Smith
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This is my 28 th day of the August Text Challenge. The new operator does a very simple thing. First let's take a look at...
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Js closure and counter, anti – shake throttling implementation
December 7, 2023
by Loretta Hayden
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A closure is a bridge that connects the inside and outside of a function. Closures have three features: functions nested functions. Functions can reference external...
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How to gracefully handle Form data?
December 7, 2023
by Michael Murphy
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Without javascript to process it, when we click the submit button, the form is sent to the action with the form elements name and value...
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In 2021, the latest big factory interview questions are summarized.
December 7, 2023
by Antonio Robertson PhD
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['1', '2', '3'] map(parseInt) What & Why? At first glance, the answer that pops into mind is [1, 2, 3]
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How does Yuxi deal with the loss of this direction in Vuex source code
December 7, 2023
by Mr. Robert Padilla
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Vuex source code how to deal with this pointing missing. Follow the learning part of Vuex source code implementation. Review this direction, call, strict pattern,...
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[react.js] How to automatically cancel asynchronous requests for component uninstallation
December 7, 2023
by Susan Jones
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One time passing by a colleague's station, just see a colleague in writing interview evaluation, see there is a question: components uninstall automatically cancel asynchronous...
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To capture how long the user stays on the page, here’s how I do it (front-end monitoring)
December 7, 2023
by Kathryn Collins
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When monitoring functionality, our primary concern is that our monitoring code does not affect our current business code and future business code. After a little...
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Macro and Micro Tasks (1)
December 7, 2023
by Valerie Bishop
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"This is the fourth day I participate in the August More text challenge, the activity details view: August more text challenge" running mechanism: the essence...
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Part1 – Functional Programming
December 7, 2023
by Nakul Sarin
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Closures are functions that can read variables inside other functions. In javascript, for example, local variables can only be read by child functions inside a...
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How do I pass extra parameters to the Validator using form validation
December 7, 2023
by Kahurangi Gee
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When you set an input field in a table, you need to check the maximum value and minimum value of the input field. The maximum...
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Egg.js test water – add, delete, modify and check article
December 7, 2023
by Millie Forbes-Todd
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The last article was about the back-end rendering project - egg.js testing the waters - weather forecasts. But no database was introduced. The trial project...
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Five minutes – A quick look at the “precompile phase” of JS code before execution
December 7, 2023
by 楊冠霖
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JavaScript, which pretends to be an interpreted language, does not have a "precompile" stage, so it is more appropriate to call it "precompile". It is...
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Depth copy of the day12 object
December 7, 2023
by Scott Hernandez
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Foreword shallow copy deep copy make up a word make up a word make up a word make up a word make up a word...
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