JavaScript: What does let a = b = 1; actually mean?

#javascript #javascriptassociativity #assignmentoperators
Assignment operators are right-associative.
The variables declared with let are block scope variables so not available outside the block but available inside the block.
The variables declared with let are function scope variables so not available outisde the function but available inside function.
The variables declared witout let const or var are global variables.

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It makes it a global variable, which is avoided behavior. To fix these things ‘use strict’ is used