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nodejs Foundation concept Node.js is an open source and cross platform JavaScript runtime environment. It runs outside the browser. It is an event driven asynchronous I/O single process server-side JS environment. Based on Google's V8 engine, the V8 engine executes JavaScript very fast and has very good performance. be careful: Nodej ...

The author has been systematically combing the knowledge of native JS recently, because I think JS, as the fundamental technology of front-end engineers, can't be learned too many times. I plan to make a series driven by a series of questions. Of course, there will be questioning and expansion. The content is systematic and complete. It will im ...

The simplest function of map printing on the Web side is to output the map within the current window, that is, export the current map as a picture and store it to the client. Different browsers provide their own screen capture functions, and the function of exporting maps can also be realized based on the screen capture function of the browser ...

1. Introducing wechat JSSDK In fact, I've studied this step for a long time. vue can import external cdn resources. However, in uniapp, at present, I don't know how to configure relevant files. It seems that it doesn't work according to vue's method. Still, I haven't found the right method. Friends who know can leave a message and tell ...

Article catalog prefaceI Download of ElementUIII Use of ElementUI preface ElementUI is a desktop component library based on Vue 2.0 for developers, designers and product managers. It is a UI framework based on Vue, which develops many related components based on Vue to facilitate us to quickly develop pages. 1, Download of ElementU ...

Basic use of React! React introduction! React is a JAVASCRIPT library for building user interfaces. React is mainly used to build UI. Many people think that react is the V (view) in MVC. React originated from Facebook's internal project to build Instagram's website, and was open source in May 2013. React has high performance and simple code lo ...

Object extension Concise representation of attributes const foo = 'bar'; const baz = {foo}; baz // {foo: "bar"} function f(x, y) { return {x, y}; } f(1, 2) // Object {x: 1, y: 2} In addition to attributes, methods can also be abbreviated. const o = { method() { return "Hello!"; } }; Concise writing is also useful when prin ...

Background: because of work needs, it is necessary to split the data and put it into the table. A total of 64 rows and 8 columns are required. You can't do it manually, so you want to obtain the number of rows first, and then decide how many rows to draw according to the number of rows. However, there is a problem in data acquisition, which has ...

Front end code specification - JavaScript style guide Based on github project [airbnb](https://github.com/airbnb/javascript "airbnb") translation also adds some personal understanding. The specification helps us better improve code readability and avoid some unnecessary bug s. leleshuo 1. Object 1.1 create objects using litera ...

Vue shopping mall project preface 1. It contains a lot of my personal understanding and views; 2. This is a shopping mall project. At present, it involves routing, slots, axios data request, data storage and use; 3. This article only involves routing configuration and component slots; 4. Now a small part of the project has been compl ...