Step by Step solution about How to resolve the algorithm Keyboard macros step by step in the JavaScript programming language

This is a JavaScript code that adds an event listener to the document object for the keydown event.

When the user presses a key, the onkeydown event is triggered and the evt parameter is passed to the event handler function.

The evt.keyCode property of the event object contains the Unicode code of the key that was pressed.

In this case, if the pressed key is the F7 key (with a Unicode code of 118), the following actions are performed:

1. An alert dialog is displayed with the text "You pressed F7!".
2. The return false statement is executed, which prevents the default action for the key press from being executed.

In most browsers, the default action for the F7 key is to reload the current page. By returning false, the event handler prevents this default action from occurring.

document.onkeydown = function(evt) {
  if (evt.keyCode === 118) {
    alert("You pressed F7!");
    return false;
  }
}