What is lexical Environment ,Syntax Parser and Execution Context || UNDERSTANDING THE JAVASCRIPT #1

#coding #codingfun #javascript #webdevelopment Share, Support, Subscribe!!! https://www.youtube.com/channel/UCprATlh97A6LdqkGLTDBI4g Syntax Parser : 0:36 Execution Context : 2:20 Lexical Environment : 5:32 Syntax parser : The program that reads your code and determined what it does and it’s grammar is valid. It scans the program line by line . Execution context A wrapper to help manage the code that is running There are many lexical environments. Which one is currently running is managed via execution context . It can contain things beyond what you have written in your code . Because remember again, your code is being translated being processed by whole other feature whole other set of program that someone else wrote so it’s executing your code that's what happening inside javascript. Lexical environment : Where something sits physically in the code you write. Lexical means having to do with words or grammar . Lexical environment exists in programming language in which where you write something is important. In programming languages where the lexical environment is important that means where you see things written gives you an idea of where it will actually sit in the computers memory and how it will interact with other variables and functions and elements of the program. And that’s because the program, the compiler / interpreter that’s converting your code to those instructions cares about where you put things. Business Email : [email protected] About : Coding Fun is a YouTube Channel, where you will find Amezing #coding, live #interview , #javascript tutorials and #webdevelopment videos in Hindi, I hope this video was useful for you , if it is then press the thumbs up button.