When Javascript Code Is Executed?
Whenever a Javascript Program Is Run an Execution Context Is Created. in This Phase, Javascript Allocates the Memory to All the Variables and Functions Present...
Whenever a JavaScript program is run an execution context is created. In this phase, javascript allocates the memory to all the variables and functions present in the program. The variables are stored with the value undefined and the function is stored with all the code present in that particular function.
How JavaScript code is executed?
The source code is passed through a program called a compiler, which translates it into bytecode that the machine understands and can execute. In contrast, JavaScript has no compilation step. Instead, an interpreter in the browser reads over the JavaScript code, interprets each line, and runs it.
Where does JavaScript get executed?
Today, JavaScript can execute not only in the browser, but also on the server, or actually on any device that has a special program called the JavaScript engine. The browser has an embedded engine sometimes called a “JavaScript virtual machine”. Different engines have different “codenames”.
Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.
