如何讓使用者在文字方塊中輸入完畢後才觸發JavaScript函數？

// Setup
var typingTimer;                // Timer identifier
var doneTypingInterval = 5000;  // Time in milliseconds (e.g., 5 seconds)
var $input = $('#myInput'); // Assuming this is the input in question

// Start the timer on keyup
$input.on('keyup', function () {
  clearTimeout(typingTimer);
  typingTimer = setTimeout(doneTyping, doneTypingInterval);
});

// Clear the timer on keydown
$input.on('keydown', function () {
  clearTimeout(typingTimer);
});

// Execute the action when typing is complete
function doneTyping () {
  // Perform AJAX request or other desired action
}