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Object extension Concise representation of attributes const foo = 'bar'; const baz = {foo}; baz // {foo: "bar"} function f(x, y) { return {x, y}; } f(1, 2) // Object {x: 1, y: 2} In addition to attributes, methods can also be abbreviated. const o = { method() { return "Hello!"; } }; Concise writing is also useful when prin ...

Use of: enabled and: disabled Use detail points: In the input box, set the readonly attribute to match the enabled style< a href > < / a > can match the: enabled attribute, but cannot match the: disabled attributeThe < Select > drop-down box can match: enabled and: disabledcontenteditable='true 'cannot match the element of t ...

This article introduces the 'definition and usage' + 'attribute effect' of CSS overflow attribute in detail No more nonsense, just go to the code and Legend (in order to make it easy for everyone to read, we all have some pictures of our own verification process to share). I overflow definition and usage: 1. overflow Property specifies what ...

1. Review 2. Horizontal and vertical center Horizontal center: inline block single line text multiline text text align: center block level margin: 0 auto Vertical, fixed height inline single line text line height inline block: if there are multiple height inconsistencies in a line Block level padding or margin Non fixed height single line text ...

Vue shopping mall project preface 1. It contains a lot of my personal understanding and views; 2. This is a shopping mall project. At present, it involves routing, slots, axios data request, data storage and use; 3. This article only involves routing configuration and component slots; 4. Now a small part of the project has been compl ...

Hello, fellow students! When Xiaobian was learning the front end, he accidentally heard the concept of pseudo class. It doesn't matter. What matters is that I forgot how to use pseudo class and pseudo element. After reviewing it again, I want to share this part of the content: Pseudo class Both pseudo classes and pseudo elements belong to ...

First of all, I'd like to share my personal experience. I'm a graduate of 2021. I'm an ordinary undergraduate. I'm a non computer major. After being beaten by spring moves, I've successfully landed in a large factory and joined the post. It is necessary for Internet companies to have a recruitment algorithm. If the basic algorithm fails to p ...

1. Local disk IO - "click" to read 1.1 create FileReader object The FileReader object is used for read operations in IO operations let fd = new FileReader() 1.2 using FileReader object to read files fd.readAsArrayBuffer() reads a file asynchronously and returns ArrayBuffer fd.readAsBinaryString() reads a file asynchronously ...

The pan entertainment audio and video chat scene is full of uncontrollable risk factors, such as pornography, violent fear and political information. With the increasingly strict national supervision, each platform needs to control the audio and video content of the platform, and it needs to invest a lot of manpower to process the audio and vid ...

react3.0 The variable name of global import can be customized, and the specified variable name is used for on-demand import Review component value transfer: Father to son, son to father: review.js import React from "react" // When transferring values, pay attention to the problem of this pointing. There are three solutions: 1 Use bind in t ...