1 figure to explain the difference and connection between nodejs and JS

1 This picture explains nodejs and js The difference and connection

contact ： They all follow ECMAScript Grammatical norms
ECMAScript The syntax specification defines variable definitions , loop , Judge , function ; The prototype and prototype chain are defined , Scope and closure 、 asynchronous ;

difference ：

1. nodejs No, W3C Some browser operation methods in the standard , Such as DOM,BOM;
2. nodejs He has his own nodejs API, Can control the operating system , file , Networks and databases ;
3. nodejs No js library , It is C++ Developed , It's based on Chrome V8 Engine js Operating environment , Or rather, js The interpreter of language ;
4. It's what we often use Js frame （ The scaffold ） Foundation of operation ;