- How the browser renders the document
- Receives the data (bytes) from the server.
- Parses and converts into tokens (<, TagName, Attribute, AttributeValue, >).
- Turns tokens into nodes.
- Turns nodes into the
DOM
tree.
- Builds
CSSOM
tree from thecss rules
.
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft
,elem.offsetTop
,elem.offsetWidth
,elem.offsetHeight
,elem.offsetParent
People
:bowtie: |
😄 :smile: |
😆 :laughing: |
---|---|---|
😊 :blush: |
😃 :smiley: |
:relaxed: |
😏 :smirk: |
😍 :heart_eyes: |
😘 :kissing_heart: |
😚 :kissing_closed_eyes: |
😳 :flushed: |
😌 :relieved: |
😆 :satisfied: |
😁 :grin: |
😉 :wink: |
😜 :stuck_out_tongue_winking_eye: |
😝 :stuck_out_tongue_closed_eyes: |
😀 :grinning: |
😗 :kissing: |
😙 :kissing_smiling_eyes: |
😛 :stuck_out_tongue: |
This is a guide for aligning images.
See the full Advanced Markdown doc for more tips and tricks
With the addition of ES modules, there's now no fewer than 24 ways to load your JS code: (inline|not inline) x (defer|no defer) x (async|no async) x (type=text/javascript | type=module | nomodule) -- and each of them is subtly different.
This document is a comparison of various ways the <script>
tags in HTML are processed depending on the attributes set.
If you ever wondered when to use inline <script async type="module">
and when <script nomodule defer src="...">
, you're in the good place!
Note that this article is about <script>
s inserted in the HTML; the behavior of <script>
s inserted at runtime is slightly different - see Deep dive into the murky waters of script loading by Jake Archibald (2013)
// connect() is a function that injects Redux-related props into your component. | |
// You can inject data and callbacks that change that data by dispatching actions. | |
function connect(mapStateToProps, mapDispatchToProps) { | |
// It lets us inject component as the last step so people can use it as a decorator. | |
// Generally you don't need to worry about it. | |
return function (WrappedComponent) { | |
// It returns a component | |
return class extends React.Component { | |
render() { | |
return ( |
/** | |
* | |
* ПАТТЕРН ПРИСПОСОБЛЕНЕЦ/ЛЕГКОВЕС (Flyweight) | |
* | |
* Паттерн ПРИСПОСОБЛЕНЕЦ/ЛЕГКОВЕС - структурный шаблон проектирования, при котором объект, представляющий себя как | |
* уникальный экземпляр в разных местах программы, по факту не является таковым. | |
* Данный паттерн проектирования позволяет вместить большее количество объектов в отведённую оперативную память. | |
* Легковес экономит память, разделяя общее состояние объектов между собой, вместо хранения одинаковых данных в | |
* каждом объекте. |