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From syntax and features every JavaScript developer needs ... A closure is the way a variable’s scope acts in special circumstances. When a new function scope is declared, the variables in ...
A closure in JavaScript is an inner function that has access to its outer function’s scope, even after the outer ... ll deal with errors: try/catch blocks, throwing new errors, and on() handlers.
It was a Wednesday. I hear a lot of talk about how it’s a performance penalty to use globally scoped variables in JavaScript (not to mention, dangerous / dumb). When a function looks for a variable, ...