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Vue Foundation (Data Request, Component, Attribute, etc.) axios&&fetch Purpose: To use data requests in frameworks Data Request Using fetch provided by native js Using third-party encapsulation libraries: axios axios can be mounte ...

Specific steps: Show me a list of my projects (where the common jar packages are mainly for importing dbutils that connect to databases, and I import them together for convenience) 1. Create a new Project (take creating a web Project as an e ...

Basic types String，Number，Boolean，Undefined，Null，Symbol reference type Object But sometimes what we need is to separate the array, the function and the time, so how do we deal with it? I: typeof typeof ''; // string validity typeof 1; ...

Front-end Technology 1.1 Course Arrangement 1.2 Front-end Technology Understanding (Understanding below) 1.2.1 Front-end Development History 1.2.2 New Concept Interpretation 1.2.2.1 Node.js ...

Default Location of Document flow Location Floating positioning float split into columns Layer location layer attribute is position Document Flow Location From top to bottom, from left to right Element classification: block inline-block Element ...

The function of the interface is to declare the structure and method of variables, but not to make concrete implementation. Typically, interfaces force type checks on all members, including number and type: interface Name { first: string; second: string; } let name: Name; name = { first: 'John', second: 'Doe' }; name = { / ...

Articles Catalogue prototype Read-only property More prototype class property(fget=None, fset=None, fdel=None, doc=None) It returns an attribute. For example: class C: @property def x(self): return None print(type(x)) Y ...

Web Components Start Build your own custom components without adding any dependenciesHTML tags with styles, interactive features, and elegant organization in their files https://developer.mozilla.org... Web Components are a different set of technologies that allow you to create reusable custom elements whose functions are encapsulated outside y ...

Original Link: https://segmentfault.com/a/1190000013796215 Upload upload is a common feature in front-end development, and Element component libraries commonly used in Vue development also provide very useful upload components. Upload upload ...

Class attributes Like the following code: class Person: name = "Zhang San" # Common class attributes __age = 18 # Private class attributes The attributes directly defined in a class are class attributes, which are shared by all instance objects.For common class attributes, class objects and instance objects can be accessed outside the c ...