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Movable gear First effect It's realized with canas in js. The actual effect is that the gear will move. It's still interesting. It's perfect with some music. Problem analysis js inside the canas knowledge, you can refer to https://www.runoob.com/html/html5-canvas.html , I won't introduce it here. We can see from the graphics that we have t ...

catalogue 1. What is web API 2. Basic concepts of DOM 2.1 DOM tree (document object type) 3. Get elements and events 3.1. Get elements 3.2 events 4. Operation element 4.1. Get / modify the content in the element 4.2. Get / modify attributes in elements 4.3. Get / modify attributes in form elements 4.4. Get and modify style attribut ...

By Matt Maribojoc Translator: front end Xiaozhi Source: stackabuse There are dreams and dry goods. Wechat search [Daqian world] pays attention to this dish washing wisdom who is still washing dishes in the early morning. This article GitHub https://github.com/qq449245884/xiaozhi It has been included. There are complete test sites, mater ...

[warm tips]: if you want to know more about the actual combat content of this project, you can go to vue.js project tiktok APP- project planning Learn more about project planning. [project address] The project is managed by Git, and the final project will be released to GitHub. Interested partners can learn together to improve the project. Pro ...

I Two ways to write setState() update state setState(updater, [callback]), updater is the function that returns the stateChange object: (state, props) = > stateChange The received state and props are guaranteed to be up-to-datesetState(stateChange, [callback]) stateChange as the object, Callback is an optional callback function, which is ex ...

bpmnlint Introduction (reprinted in nuggets, plus my own understanding) The verification rules need to be controlled in the project, but it is too difficult to customize, It validates your chart against a set of defined rules and reports it as an error or warning. It can check your BPMN diagram from the command line, or through bpmn-js-bpmnli ...

1, Form form Create an HTML form for user input, which is represented by a < from > tag, The < form > element contains one or more of the following form elements: for example, < action > < input > < textarea > < Select > < optioon > < fileset > 1. Form important attribute action Action attribu ...

catalogue Logical branch 1, if conditional branch structure 1.if else syntax 2.if else exercise 2, switch conditional branch structure 1.switch syntax 2.switch exercise 3, Ternary operator (ternary conditional operator) Logical branch 1, if conditional branch structure 1.if else syntax Syntax 1: if() {} if the condition is met, it ...

Title: learning of the fourth edition of JavaScript advanced programming - Chapter 17 date: 2021-5-27 10:02:37 author: Xilong88 tags: JavaScript Contents of this chapter: Understanding event flow Using event handlers Understand different types of events Possible interview questions: 1. Do you know the event flow? 2. Event bubbling? Event captu ...

What will you gain from reading this article? Do not play virtual, real enterprise project actual combat skills, which can be directly used in the pastReal interface call to realize relevant functionsExcellent packaging skills (this project is built under the guidance of the former Tencent front-end architect)Help you step on the pit and m ...