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event Binding event handler ele.onxxx = function(event){} <div onclick="console.log('a')"></div> var div = document.getElenmentsByTagName('div')[0]; div.onclick = function(){ this.style.backgroundColor = 'green'; } Good compatibility, but only one handler can be bound to the same event of an elem ...

Original link https://www.cnblogs.com/jinyujia/p/15697183.html Basics 1. What is the relationship between JDK, JRE and JVM? What is a JVM? English name (Java Virtual Machine )，namely JAVA Virtual machine, which only recognizes .class Type file, it Be able to class The bytecode instruction in the file is recognized and the upward ope ...

1. Method of adding, deleting, modifying and querying JDBC 1, Statement: an object used to execute a static SQL statement and return the results generated by it (if there are disadvantages, generally do not use it, just understand it). The disadvantages do not completely represent errors, but are a little troublesome or strange Disadvantage 1 ...

Basic definition and use of method 1. Concept of method Method: method, also known as function, is an orderly combination of codes used to solve a class of problems. It is a functional module. (personal popular understanding is like a data processing tool. Put the original data into it for processing, and then get the results I want.) 2 ...

Relevant documents Little buddy who wants to learn Python can pay attention to the official account of Xiaobian [Python journal]. There are many resources for whoring for nothing, ha. I will update the little knowledge of Python from time to time!! Small buddy who needs source code can reply to guess number in official account. Python source c ...

[source code analysis] NVIDIA HugeCTR, GPU version parameter server - (8) - Distributed Hash, then propagate to 0x00 summary In this series, we introduce HugeCTR, an industry-oriented recommendation system training framework, which is optimized for large-scale CTR models with model parallel embedding and data parallel intensive networks. ...

1. Introduction to SaltStack 1.1 automatic operation and maintenance tools Automatic operation and maintenance is to hand over periodic, repetitive and regular work to tools to do, and turn the past manual execution into automatic operation. Automation is the sublimation of IT operation and maintenance. IT operation and maintenance automati ...

1, Keywords 1.1 alignas func: the specifier can be applied to the declaration of variables, non bit field class data members, class/struct/union and enumeration definitions. Cannot be applied to parameters;Note: but it is weaker than the original alignment; struct alignas(8) S {}; struct alignas(1) U { S s; }; // Error: if there is ...

JavaWeb 1. Basic concepts web development Static web html cssProvide it to everyone to see that the data will never change Dynamic web Taobao is almost all websites The data provided to everyone will change, and everyone will see different information at different times and places Stack technology; Servlet/JSP ,ASP,PHP, In ...

Spring MVC overview Spring MVC is a module in the spring framework and one of the cores of spring. It is often used for web development. Its bottom layer is Servlet, so it is also called Spring web mvc. Because the internal architecture pattern is mvc architecture, it is called Spring MVC Spring MVC is a container that manages the controlle ...