jQueryで非表示要素の高さを効率的に取得する方法?

<code class="js">$select.show();
optionHeight = $firstOption.height(); // Obtain height after displaying the element
$select.hide();</code>

<code class="js">var previousCss = $("#myDiv").attr("style"); // Store the original style

// Set visibility to 'hidden' and display to 'block'
$("#myDiv").css({
    position: 'absolute', // Optional if the element is already absolute
    visibility: 'hidden',
    display: 'block'
});

optionHeight = $("#myDiv").height(); // Measure height with modified visibility

// Restore the original style
$("#myDiv").attr("style", previousCss ? previousCss : "");</code>