Programming VIP

HTML 1: Basic cognition Understanding web pages 1: What is a web page Text, pictures, audio, video and hyperlinks 2: What is the essence behind the web page Front end code 3: What is the code transformed into an interface Browser parsing and rendering Five browsers 1: Browser It is the platform for web page display and operation 2: ...

Hello, I'm Xiaobai. This article is based on vue2. It takes about 3 minutes to read the full text.When it comes to webpack optimization, most people may be tired of it. It's just those moves. I've read many similar articles before, but I haven't really started it. Here's what I practiced with the company's projects. The loading speed of the fir ...

DOM event flow To understand the event flow, we must first understand three points: Elements are not independent, they are connected in seriesAfter a single element triggers an event, it will affect other elementsMode of event flow: event capture (proposed by Netscape) and event bubbling (proposed by IE) Let's take the above figure as ...

  catalogue 1, Concept of form validation Form validation is one of JavaScript's advanced options. The form data verified by JavaScript include: 2, Common functions and events of form verification Common functions Common events 3, Regular Basic regularity Basic case Password level Login authentication 4, Secondary linkage ...

Common methods of Object Object.getPrototypeOf() Object. The getprototypeof method returns the prototype of the parameter object. This is the standard way to get prototype objects. var F = function () {}; var f = new F(); Object.getPrototypeOf(f) === F.prototype // true Prototypes of several special objects // The prototype of an empt ...

1, Cognition object 1. What is it An object is a collection of key value pairs (k:v), which represents the mapping relationship between attributes and values The order should be considered in the array. The object does not consider the order, but depends on the mapping relationship 2. Object syntax k and v are separated by colons, each ...

promise is a new method proposed by ES6 to solve asynchronous programming problems. 1. Synchronous and asynchronous 1) Synchronization task: Task 2 cannot be executed until task 1 is executed. Synchronization tasks are directly placed in the main thread. 2) Asynchronous task: asynchronous tasks are placed in the event queue. Asynchronous task ...

Hi! Baoermeng, this is amumu. Meet again! Although the number of likes in the last web log was terrible, the last post actually had 111 (lonely ~ lonely ~) views, and surprisingly increased by two fans (although there are only two now, thank you very much for your support, I will continue to talk nonsense!), Let me progress from ∞ to the ...

vue2.6 middle pair typescript support Vue CLI 3 can generate new projects using TypeScript. # 1. If Vue CLI is not installed, install it first cnpm install --global @vue/cli # 2. Create a new project and select the "Manually select features" option vue create my-project-name 1. vue-class-component vue-class-component It is the of ...

DOM 1. What is DOM 2. Node (1) The childNodes property will obtain all nodes including text nodes. According to the blank space between DOM tags, it will also be regarded as text nodes. In IE8 browser, blank text will not be regarded as word nodes (2) The children attribute can get all the child elements of the current elemen ...