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Because what you have learned is still relatively basic and what you have summarized is also some basic things, it is mainly to review what you have learned and put them together so that you can look back later, so it is only suitable for beginners. 1. html template:HTML templates: DOM-based templates, templates are valid and ...

Today's content: 1. JavaScript: 1. ECMAScript: 2. BOM: 3. DOM: 1. Event DOM simple learning: to meet case requirements *Function: control the content of html document *Get page label (Element) object: element *document.getElementById("id value"): get the element object through ...

Article directory Program description Program / dataset Download Screenshot of dataset Core code analysis Module / buildmodel.py (interface, can run directly) Interface call and operation effect Main.py Program description Grey correlation model is used to model the quality index data of red win ...

In section 341, Python distributed crawler creates search engine Scrapy elaboration - writes spiders crawler file to retrieve content in a circular way - the meta attribute returns the specified value to the callback function - Scrapy built-in Image Downloader Write spiders crawler file to retrieve cont ...

Drawer (drawer component) 1. Overview Scalfold is a common layout Widget used by the Flutter MaterialApp. It accepts a Drawer attribute and supports the configuration of the Drawer. It can pull out the navigation panel from the side bar. The advantage is to fold up some function menus. Generally, th ...

1. Junit test tool Junit is a unit testing framework for Java programming language Common comments are: @BeforeClass: indicates that the method using this annotation is executed before the test class is called. This annotation can only be declared once in a test class, and the method corresponding to ...

HTML+JS reading form data Expected effect Code Analysis Result display Expected effect When a form is submitted, it is usually necessary to verify the data validity of the form. The premise of verifying the data is to read the data of the form elements. As shown in Figure 1 below, when clicking ...

Selector is the core of jquery The object returned by jquery selector is jquery object, which does not return undefined or null, so it is unnecessary to judge   Basic selector: ID selector $("" Id ") element selector (label selector) $("label") such as $("div") Get the specific label, and use the way of array ...

Record learning content Today's main learning: dynamic agent, annotation, classloader 1, Dynamic agent Role: enhance a method. There are three ways to enhance an object: 1. Inherit, override method after inheriting parent class. Advantages: simple, easy to implement, can inherit the class after rewritin ...

isinstance and issubclass isinstance(obj,cls) checks if obj is an object of class CLS class Foo(object): pass obj = Foo() isinstance(obj, Foo) issubclass(sub, super) Checks if the subclass is a derived class of the super class class Foo(object): pass class Bar(Foo): pass issubclass(Bar, Foo) reflex 1 What is reflecti ...