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The var keyword and the scope
var myVariable = "Hi, I am a global variable";
function sayHello() {
myVariable = "Hi, I am locally produced!";
console.log(myVariable);
}
console.log(myVariable); // Prints "Hi, I am a global variable"
sayHello(); // Prints "Hi, I am locally produced!"
console.log(myVariable); // Prints "Hi, I am locally produced!"
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