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Node access add, delete, modify and query And get page element type, but node operation uses node level relationship to get elements Getting elements by parent-child sibling relationship Logical, but less compatible Generally, a node has at least three basic attributes: nodeType, nodeName and nodeVal ...

There are two ways to design software: one is to make the software too simple and obviously free from defects; the other is to make the software too complex and free from obvious defects. ->Return to Column Directory <- Code download address: https://github.com/f641385712/netflix-learning Catal ...

Using javascript to complete magnifier 1. Complete the css layout. The layout can be written according to personal preferences 2. Using the object-oriented idea, the first step is to click events for small pictures. You can use event delegation to judge objects, or you can use array to add click events ...

Functional interface Functional interface 1.1 overview If there is only one method in an interface, and the default attribute of the method is public abstract method, the interface can be called a functional interface. 1.2 use @ functional interface Be similar to @Override Turn on code rewrite forma ...

Before this article, if readers are not familiar with beaaware and BeanPostProcessors, it is strongly recommended to read this article first: spring BeanPostProcessor lifecycle protected Object doCreateBean(final String beanName, final RootBeanDefinition mbd, final @Nullable Object[] args) throws Bea ...

Catalog 0.1 pilot conditions: 0.2 foreword: matplotlib font installation 1. Figure: 1.1 basic demonstration: 1.2 multiple canvases: 1.3 multiple subgraphs of a canvas: 1.3.1 basic method: 1.3.2 advanced method: 1.3.2.1 method 1: 1.3.2.2 method 2: 2 axis / subgraph (axes): 2.1 basic demonstra ...

Article directory 1, Overview of XML files 1. XML file 2. Sample XML file Two, the restriction of XML file 1. Constraints overview 2. DTD constraint example 3, Analysis of XML file 1. Overview of XML file parsing 2. DOM parsing 3. SAX parsing 4. DOM4J parsing 5. JDOM parsing 6. Comparison of sev ...

Catalog getattr details Preface 1. Eliminate if...else 2. Reflection mechanism 3. getattr Details summary getattr details Preface These two days, we are optimizing Tencent's cloud migration platform. SmartMS When using the middleware (go2cloud_api). Some of the interfaces ...

Java send mail 163 email to 163 email, enterprise email, QQ email, etc As mentioned in the last article java sends QQ mail , and Several ways to send mail ; in this article, we will talk about how to match all mail in the enhanced version. The following Demo is to send a plain text email, but part o ...

3. Magic method Python's objects naturally have some magical methods. They are always surrounded by double underscores. They are everything of object-oriented python. They are special methods that can add magic to your class. If your object implements (overloads) one of these methods, then this method will be called by Python in a special case. ...