Programmer Group

vue When creating a vue instance, an object options is passed in el:string/htmlelement: determines which DOM the vue instance will manage data:object/function: the data object corresponding to the vue instance (there must be a function in the component) methods:{[key:string]:function} function: define some methods belonging to vue, which ...

1, Front end development mode before 2016: 1. Can write HTML + CSS + JavaScript, can develop front-end 2. If you need to beautify the page style, drag a bootstrap 3. You need to operate the DOM or initiate an Ajax request, and then drag a jQuery 4. To quickly realize the effect of web page layout, drag a Layui Current fron ...

Before ECMASCript 6, constructor patterns and prototype patterns and their combinations were used to simulate the behavior of classes. However, these strategies have their own problems and corresponding compromises. The implementation of inheritance can also be very lengthy and confusing. Therefore, ECMASCript5 introduces a new class keyword to ...

definition Decorators are special types of declarations that can be attached to class declarations, methods, accessors, properties, or parameters It is a function of dynamically extending objects without changing the original class and using inheritance Similarly, in essence, it is not a tall structure, but an ordinary function. The form of ...

prefaceIn the previous article, I wrote about custom events in Vue. Custom events are the basis of the global event bus. I buried a small foreshadowing in my last article. As shown below:As I said, in Vue, if we use (@ ORV on) to bind a custom event to the component, its essence is to bind an event to the child component VueComponent, that is, ...

Pay attention to me when I study, learn something by myself and some useful little things! In the future, you will also send some projects you have done and how to solve the problems you encountered. . JavaScript Common Events onclick//Mouse Stand-alone Object onmouseover//Mouse pointer is moved over an element onmouseout//Mouse pointer leave ...

Article catalog catalogue Article catalog preface 1, What is JavaScript? 2, Writing position of JS 1. Inline 2. Embedded 3. External chain 3, Input / output statement 1. Enter a statement   2. Output statement 4, Definition and use of variables   1. Define variables 2. Notes on variables 3. Variable ...

1, BOM browser object model BOM - Browser Object Model The top-level object of BOM is winodw (an object. When you open a page, there is a window) All the variables you define in the group are under window. 1. Window size of browser Refers to the size of the browser's visual window. A scroll bar may appear in the browser   &nbsp ...

00. Preface Recently, when I was writing a web page, I needed the back-end websocket service. Because I didn't need too complex functions, the back-end chose to use the nodejs websocket module of nodejs. During the development process, it was found that http service was needed, but nodejs websocket could not implement http service, so it began ...

Project scenario: 1. Ant Design Vue uses forms to import presentation data 2. The project requirements are displayed as shown in the figure below, so it involves the processing and display of complex headers 3. This article mainly focuses on the processing and explanation of complex headers. Plug ins such as xlsx can be used for simple header ...