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Before buying the elevation on the Kindle, today went to the paper, "The Essence of JavaScript language," "high-performance JavaScript," "Javascipt design Mode", began a journey of reading.
I am thinking about how to effectively understand the contents of the book, practice the code is definitely necessary.
At the same time, I think the mind map +quizlet Card review is a way to try, mind map can be a clear context, and then the need to memorize the knowledge points in the card for memory.
Mind Map of the first two chapters, online Interactive in: https://www.processon.com/view/link/56f35d1be4b067e5c9f9d489
I'm going to keep the later chapters up to date.
Then it is to use the QA method to comb the knowledge points, and then put on the Quizlet Quizlet.com/_24zzbu
(You can use Quizlet app or online, click Flashcards, remember right set start With-term)
The first chapter:
1.Q: What are the parts that make up a complete JavaScript implementation?
A: Core (ECMAScript) Document Object Model (DOM) Browser object model (BOM)
Chapter II
What are the attributes of the 2.q:<script> element, usually on the page?
A: Properties: 1.async (Download Script now) 2.defer (deferred to document resolution display after execution) 3.SRC (external file address)
4.charset (character set, rarely used) 5.type (scripting language type, default, writable) 6.language (deprecated)
Because you want to render the page first, then load JS, usually placed in the <body> element, after the page content
3. Q: What are the advantages of using JS external files?
A:1. maintainability: Placing JS in a folder for easy maintenance
2. cacheable: If two pages use the same external file, just download once, speed up loading
4.Q: What is promiscuous mode and standard mode? How do I turn on standard mode?
A: At the beginning of the document if no document type declaration is found, the browser will turn on promiscuous mode by default
Promiscuous mode will include some nonstandard features, IE will be closer to IE5. Different browser promiscuous mode behavior varies greatly.
Turn on standard mode, HTML5 add <! at the beginning of the document DOCTYPE html>
What are the usage scenarios and effects of 5.q:<noscript>?
A: Use scenario 1. The browser does not support scripting
2. Browsers support scripts, but scripts are disabled
Effect: When the usage scene is met, the contents of <noscript> are displayed, otherwise it won't.
This is the knowledge point of the first two chapters I have seen. Is it helpful to combine mind mapping and QA cards?
JS elevation Reading notes-first to second chapter-included online mind map and Quizlet card
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