为了获得想要的结果，我必须使用以下代码：
// Cache the div so that the browser doesn't have to find it every time the window is resized.var $div = $('li.leaf.item');// Run the following when the window is resized, and also trigger it once to begin with.$(window).resize(function () { // Get the current height of the div and save it as a variable. var height = $div.height(); // Set the font-size and line-height of the text within the div according to the current height. $div.css({ 'font-size': (height/2) + 'px', 'line-height': height + 'px' })}).trigger('resize');谢谢joshuanhibbert @ css-tricks的帮助！
