Detectar cuándo se ha abierto una página web usando Javascript

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Hello, today we will learn how to detect when a web page has been opened using JavaScript, for example, to refresh its content.

To detect when the web page has been opened, we use the following function:

$(window).focus(function () {
  console.log("focus web opened");
});

To detect when it is closed, we use this function:

$(window).blur(function () {
  console.log("blur web closed");
});

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