Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison table of the ...
Understanding the idea of a shared or non-shared execution context can help avoid errors such as: var myFunction = function () { this.f = new Array(5); for (var i = 0; i < 5; i++) { this.f[i] = ...
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