The answer
bind itself is O(1) - it just creates a closure. The returned function has the same time complexity as the original function. bind does not add any algorithmic overhead.
bind Polyfill Interview Questions
What is the time complexity of bind in JavaScript?
More FAQs in bind Polyfill Interview Questions
Function.prototype.myBind = function(context, ...presetArgs) { const fn = this; return function(...laterArgs) { return fn.call(context, ...presetArgs, ...laterArgs); }; }.
Check this instanceof boundFn. If true, return new fn(...presetArgs, ...laterArgs). Otherwise, return fn.call(context, ...presetArgs, ...laterArgs).
No. Arrow functions have lexical this. call (used inside the polyfill) cannot change an arrow's this. This is the same behavior as the native bind.
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