javascript's Introduction
Javascript ---------- JavaScript is a synchronous, single threaded programming language it's run top to bottom Synchronous ---------- Synchronous is a blocking architecture, so the execution of each operation depends on completing the one before it Asynchronous --------- Asynchronous is a non-blocking architecture, so the execution of one task isn't dependent on another. Tasks can run simultaneously. data types ---------- Primitive Types ---------------- is have is not an object and has no methods or properties string, number, boolean, null, undefined The Object Datatype ----------- array, object, date Scope ------- Block Scope ------ Variables declared with the let keyword inside a { } block cannot be accessed from outside the block Variables declared with the var keyword can NOT have block scope Function Scope --------- Each function creates a new scope var, let and const same name can be declare inside the different function Global Scope --------- A variable declared outside Built-in objects ---------- number, string, math, date, error Type Casting ---------- Type conversion means the transfer of data from one data type to another Explicit Type and Implicit Type Casting
javascript's People
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. ๐๐๐
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google โค๏ธ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.