js_ Asynchronous serialization of call / callback functions and higher-order functions based on appointment
Early practice Callback function In computer programming, Callback function, or Callback for short (Callback, i.e. call then back will return to the main function after being called and operated by the main function), refers to the reference of an executable code (or the object encapsulating tUTF-8...
Posted by lostsoul111455 on Tue, 26 Oct 2021 06:22:49 +0530
The axios library and fetch built-in methods send ajax requests
What is axios? axios is a promise based http library that can be used to send get and post requests Characteristics of axios (RPM) 1. You can send XMLHttpRequests in your browser 2. You can send http requests in node.js 3. Promise API supported 4. Intercept requests and responses 5. Convert reqUTF-8...
Posted by senthilnayagam on Tue, 26 Oct 2021 17:05:18 +0530
axios calls an API without parameters to try a parallel request
Forty years ago, people exclaimed that pop concerts would destroy the next generation; Thirty years ago, people exclaimed that martial arts novels would destroy the next generation; Twenty years ago, people exclaimed that TV programs would destroy the next generation; Ten years ago, people exclUTF-8...
Posted by sakaveli on Tue, 26 Oct 2021 18:50:36 +0530
CSS Elastic Box
Catalog Preface 1. The Three Core Elements of Elastic Box 2. Properties of flex containers 1. flex-direction: layout direction ( 2. flex-wrap: surround effect 3. flex-flow properties ( 4. justify-content: for horizontal alignment of flex projects ( 5. align-items: for vertical alignment of flexUTF-8...
Posted by Ark3typ3 on Tue, 26 Oct 2021 22:31:02 +0530
Front end interview questions collection
1, HTML interview questions 1. Understanding of HTML semantics Make it easier to read (increase code readability).Make search engines easier to read (search engine optimization: SEO). Common semantic tags: head navigation bar Block (semantic) diUTF-8...
Posted by wizzard81 on Wed, 27 Oct 2021 09:56:38 +0530
POST submission data -- understanding of ContentType
Content type refers to the content encoding type when http/https sends information to the server. contentType is used to indicate the type of data stream sent. The server uses a specific parsing method to obtain the data in the data stream according to the encoding type. In network requests, coUTF-8...
Posted by ashutosh.titan on Wed, 27 Oct 2021 12:06:07 +0530
HTML5 to achieve local image clipping
HTML5 to achieve local image clipping This small case is to use the canvas technology of HTML5 and the File API of HTML5 to realize the local clipping of pictures, and select the clipping area from a large picture, 1. Knowledge points canvasJavaScript The directory of code 1 is as follows CreatUTF-8...
Posted by Axariel on Wed, 27 Oct 2021 19:27:21 +0530
One interview question every day (15) - what are the commonly used hooks, specifically
Talk about the commonly used hooks? This question is an open question. You can only say the name. It's only the primary answer It is a qualified answer to be able to specify the use scenario of each hook and compare it with related hooks useState Asynchronous problem of useState Like class compUTF-8...
Posted by keefe007 on Wed, 27 Oct 2021 19:30:59 +0530
Common tags in html and a summary of their usage
html Zero Foundation Must See --- htmlHTML Common Tags Complete Preface In the previous chapter, you learned about the structure of the html page and the tags. So what labels are there? What are the functions of various labels? This article will take you into the Common Label Series! 1. Common UTF-8...
Posted by Northern Flame on Wed, 27 Oct 2021 22:38:14 +0530
Still worried about this pointing?
The front end this points to the summary When using js development, many beginners and many old teachers will be more or less hoodwinked by the direction of this ， In fact, as long as you thoroughly understand it, it is not difficult at all. Remember the core sentence: which object calls the fUTF-8...
Posted by ken72 on Thu, 28 Oct 2021 05:19:59 +0530