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When learning becomes a habit, knowledge becomes common sense. Thank you for your attention, likes, collections and comments.The new video and articles will be sent to WeChat official account for the first time. Li YongningThe article has been included in github warehouse liyongning/blog , welcome to Watch and Star.Special instructionsDue to th ...

[HTML of reconstructing front-end knowledge system] changes brought by HTML5 to web page audio introduction I believe everyone is familiar with music playback, but long before the previous music playback, your browser will ask you whether to download the flash plug-in. Now, however, it is estimated that some young developers don't need to kno ...

When learning becomes a habit, knowledge becomes common sense. Thank you for your attention, likes, collections and comments.The new video and articles will be sent to WeChat official account for the first time. Li YongningThe article has been included in github warehouse liyongning/blog , welcome to Watch and Star.Special instructionsDue to th ...

When learning becomes a habit, knowledge becomes common sense. Thank you for your attention, likes, collections and comments.The new video and articles will be sent to WeChat official account for the first time. Li YongningThe article has been included in github warehouse liyongning/blog , welcome to Watch and Star.prefaceHook Event (Hook Event ...

Promise usage review First, let's review what Promise is. Promise is a solution for asynchronous programming, which is more reasonable and powerful than traditional solutions, callback functions and events. Promise is simply a container that holds the results of an event (usually an asynchronous operation) that will not end in the future. Sy ...

catalogue 1, Baidu skin changing effect 2, Table interlaced color change 3, Select all unselect all cases in the form 4, Actions for custom attributes 4.1 get attribute value 4.2 setting attribute values 4.3 remove attributes 4.5 case exercise - tab bar switching (key cases) 5, H5 custom attributes 5.1 setting H5 custom attributes 5. ...

preface: The project needs to write a K-line diagram. The charts of echarts can't realize the functions inside, so it's really a headache to use TradingView. Baidu has few things, and it took a long time to realize them. design sketch: The k-line is updated in real time and can jump normally according to the data index.html introduces js and ...

catalogue 4, Process control content 1. Introduction to process control 2. Code block (1) Branch structure - if statement ​ (2) Branch structure - if else statement (3) Branch structure - if else if statement (4) Branch structure - switch statement (5) Loop statement - for loop (5) Loop statement - double for loop (6) Loop statemen ...

1, Function basis and types (1) Concept of function The process of encapsulating a fixed function or program segment is the process of defining a function and realizing a fixed function or program. An entry and exit are required in this package.The entry is the parameter and the exit is the return. (2) Concept of high cohesion and low coupli ...

What is Promise 1. Know Promise: Promise is a solution for asynchronous operation. Let's talk about asynchronous first: The callback function is actually an asynchronous operation, for example: document.addEventListener( 'click', () => { console.log('This is asynchronous'); }, false ); ...