Understand how asynchrony is handled in JavaScript
In website development, asynchronous events are an inevitable part of the project. Also because of the rise of front-end frameworks, SPA implemented through frameworks has become a standard for quickly building websites, and data acquisition is also a must. It has become an indispensable part; this article will talk about asynchronous processing in Javascript. Sync? asynchronous? First of all, of course, we must understand what synchronous and asynchronous means respectively. These two terms are always confusing for beginners. After all, the literal meaning in Chinese is easy to understand in reverse. From the perspective of information science, synchronization refers to It is to do things one by one, while asynchronous is to process many things together in parallel. For example, when we go to the bank to handle business, queuing in front of the window is synchronous execution, and getting the number and doing other things first is asynchronous execution; through the characteristics of Event Loop, asynchronous events can be executed in Javascript It’s a piece of cake So what is the way to handle asynchronous events in Javascript? Callback function The callback function is the one we are most familiar with. For example, event listeners registered when a web…
Understand how asynchrony is handled in JavaScript
In website development, asynchronous events are a part of the project that must be dealt with, and because of the rise of front-end frameworks, SPA implemented through frameworks is already a standard configuration for quickly building websites. It has become an indispensable part; this article will talk about the asynchronous processing method in Javascript. Synchronization? asynchronous? First of all, of course, we must first understand what synchronous and asynchronous mean. These two nouns are always confusing for beginners. After all, the literal meaning of Chinese is easy to be reversed. It is doing one thing at a time, and asynchronous is the processing of many things together in parallel. For example, when we go to the bank to handle business, queuing in front of the window is synchronous execution, and getting the number to do other things first is asynchronous execution; through the characteristics of Event Loop, asynchronous events in Javascript can be executed Easy to say So what is the way to handle asynchronous events in Javascript? Callback function What we are most familiar with is the callback function. For example, the event listener registered when the web page interacts with the user needs to receive a callback function;…
Understand how asynchrony is handled in JavaScript
In website development, asynchronous events are a part of the project that must be dealt with, and because of the rise of front-end frameworks, SPA implemented through frameworks is already a standard configuration for quickly building websites. It has become an indispensable part; this article will talk about the asynchronous processing method in Javascript. Synchronization? asynchronous? First of all, of course, we must first understand what synchronous and asynchronous mean. These two nouns are always confusing for beginners. After all, the literal meaning of Chinese is easy to be reversed. It is doing one thing at a time, and asynchronous is the processing of many things together in parallel. For example, when we go to the bank to handle business, queuing in front of the window is synchronous execution, and getting the number to do other things first is asynchronous execution; through the characteristics of Event Loop, asynchronous events in Javascript can be executed Easy to say So what is the way to handle asynchronous events in Javascript? Callback function What we are most familiar with is the callback function. For example, the event listener registered when the web page interacts with the user needs to receive a callback function;…
