this Keyword in Different Contexts

'use strict';
function showThis() {
  console.log(this);
}

showThis();

Window object
Global object
undefined
In strict mode: 1) Default binding of 'this' becomes undefined, 2) Prevents accidental global object binding, 3) Helps catch 'this' binding mistakes early, 4) More predictable than non-strict behavior, 5) Forces explicit context setting when needed, 6) Recommended for modern JavaScript development.
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