Programmer Group

preface This article is suitable for front-end Xiaobai, or a small partner reviewing CSS, because the author is still a front-end Xiaobai( 😁). I've always seen these two things, but I haven't learned about them. Now I'm trying to complete the teacher's task. I knock the code while learning every day. Personally, I think the front end is fu ...

The Angular responsive form uses an explicit and immutable way to manage the state of the form at a specific point in time. Every change to the form state will return a new state, which can maintain the integrity of the model when it changes. The responsive form is built around the Observable flow. The input and value of the form are provided t ...

With the increasing complexity of the project, the data interaction of various third-party systems is becoming more and more frequent. It is inevitable to use Web API interface. Here, Web API is a relatively broad concept. This article refers to Web API, especially ASP.NET Web API. With some simple examples, this paper briefly describes the bas ...

catalogue VUE Foundation MVVM design VUE binding principle design Virtual DOM tree analysis VUE programming steps and Practice Binding and instruction application Binding style analysis (understand): Application of life cycle function Ajax requests in Axios mode Get request Post request VUE component development Component design B ...

Original website: brief introduction explain         This article illustrates the use of Vue's options with examples. Includes: combination options and other options.         The combination options will be introduced: mixin, provide/inject; Other options are described: inheritAttrs. Official websi ...

preface The purpose of writing this series of articles on JavaScript simple meal is to record various knowledge points when reading and learning the book JavaScript advanced programming (4th Edition). Although it is a note and summary of reading, I hope it is light, concise and sharp, will not cause reading fatigue, and can take a light ...

Promise object, solve callback hell, and execute code synchronously This article records the knowledge points studied BY: Lin Yi preface: Asynchronous operation is an advantage of JS and brings great trouble. There is a word called callback hell, that is, in a callback function, execute another asynchronous task and nest it all the time, res ...

Variable scope memory The es variable has two different types of data: original value and reference value Original values: undefined, null, boolean, number, string, symbol The variable that holds the original value is accessed by value Reference value: an object stored in memory. It is an object composed of multiple values. JavaScript cannot d ...

The existence of components, like encapsulating a function or creating a package that can realize some functions, has the advantages of reuse, maintenance and avoiding variable pollution For components, encapsulation is a complete set, including HTML, CSS and JS. It realizes a complete set of reuse. In order to facilitate modifying the content ...

1.offset series Offset, offset, can only be obtained and cannot be changed offsetTop: returns the offset (Y-axis size) of the element above the parent element with positioning. If not, it is the distance to the bodyoffsetLeft: returns the offset (Y-axis size) of the element from the left border of the positioned parent element. If not, it is ...