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HTML5 tutorial from entry to proficiency

Course Elementary 54123

Course Introduction："HTML5 From Beginner to Mastery Tutorial" introduces in detail that HTML5 has added a lot of new content based on HTML, with more functions and more dazzling effects.

Javascript basic tutorial

Course Elementary 26925

Course Introduction："Javascript Basics Tutorial" will take you to quickly learn the basic knowledge of javascript and explain it through examples, so that you can better understand the javascript scripting language.

HTML basic tutorial

Course Elementary 30789

Course Introduction：This tutorial will start from the basics and does not require you to have any programming knowledge. The "HTML Tutorial" contains our knowledge of HTML5, truly achieving a comprehensive learning of HTML.

HTML5 quick introduction self-study tutorial

Course Elementary 24061

Course Introduction："HTML5 Quick Self-Study Tutorial" is suitable for zero-based entry learning of HTML5. HTML5 is the fifth version of HTML development. With the support of browser technology, it has also begun to be widely used. H5 will become the new standard for WEB development. This course will provide readers with Explain all the core features of HTML5.

javascript elementary tutorial

Course Elementary 90665

Course Introduction："JavaScript Elementary Tutorial" is an introductory course to JavaScript, designed to let everyone know and understand the common knowledge of JavaScript.

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javascript - What is the principle of canvas compressing images?

The toDataURL method in canvas can specify the format and compression quality of the image after compression, such as compressing it into webp format: {code...} toDataURL uses base64 to encode the image, and the encoded source file is 33% larger than before encoding. , reference address, but the quality parameter can specify the compression quality...

2017-06-26 10:55:55

javascript - What is the maximum compression ratio for canvas compressed images?

In a recent project, images were compressed and uploaded, and canvas was used to compress the images. It was found that canvas has different minimum compression ratios for different images. For the largest 22M picture, the smallest one can only be compressed to about 900k, and the compression ratio is 0.036. And one of the photos (only about 900k...

2017-06-12 09:28:20

javascript - compression-webpack-plugin seems to perform well, why is it not widely used?

The fourth section of this article introduces the compression-webpack-plugin, which seems to perform very well (the code changes from 3.9m to 115k after turning on gzip, and the request time changes from 10s+ to 100ms+), but it seems that few projects use it.

2017-05-19 10:13:00

javascript - JS image compression and upload as file

JS image compression is used to upload images in WEBKIT. When selecting an image, compress the image and obtain the BASE64 data of the image, and then upload the image in the form of File when submitting the form. The BASE data has been obtained, but the uploaded file is also BASE64 data and cannot be directly Use File to upload multipart/form-dat...

2017-05-18 10:58:12

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What software is cloud compression?

Course Introduction：Cloud Compression is a brand-new intelligent compression software that removes various advertising pop-ups and plug-ins to give users an extremely simple compression experience. The extremely fast compression and decompression core technology makes file processing more convenient.

2021-01-06 comment 0 9793

What is the linux compression command

Course Introduction：There are three types of Linux compression commands: gzip, bzip and xz. Among them, gzip has the fastest compression speed and is the most widely used compression method. xz is the latest compression method and can automatically provide the best compression rate.

2021-04-14 comment 0 34200

What are the two categories of data compression technologies?

Course Introduction：Data compression technology is divided into two categories, with three classification methods: 1. Instant compression and non-instant compression; 2. Data compression and file compression; 3. Lossless compression and lossy compression.

2020-07-15 comment 0 19445

How to make image compression package

Course Introduction：How to make a picture compression package: first download the WinRAR compression tool; then find the file to be compressed and right-click the mouse; then select "Add to compressed file" in the pop-up window; finally click "OK" to complete the compression .

2020-11-27 comment 0 28542

JPEG is an international standard for digital signal compression. What is its compression object?

Course Introduction：jpeg is an international standard for digital signal compression, and its compression object is still images; jpeg is a compression standard for continuous tone still images; jpeg format is the most commonly used image file format, with the suffix ".jpg" or ".jpeg".

2020-08-27 comment 0 31958

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