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 ...

After adding "y" to "x," JavaScript stores "11.234" in the "z" variable. You can control the number of decimal points that appear in a result by using the "toFixed" function. Instead of adding "x ...

Hoisting is JavaScript's default behavior of hoisting declarations to the top of the current scope Hoisting applies to variable declarations and to function declarations Always declare your local ...

Variables are made to receive values directly or through evaluated expressions compounding values and operators or results of function calls: the value is stored internally and the variable references ...