在 http://上查看更改jsfiddle.net/CBf4C/3/

您需要获取被单击元素的位置(使用 .position() )，请使用 .outerWidth() 和

You need to get the position of the clicked element (use .position()), get the dimensions of the tooltip with .outerWidth() and .outerHeight() and then calculate based on these..

实际代码是

$('a[title]').click(function(e) {

    //fadetooltip and display information
    $('body').append('<div class="tooltip"><div class="tipBody"></div></div>');
    tip = $(this).attr('title');
    var tooltip = $('.tooltip'); // store a reference to the tooltip to use it later
    tooltip.fadeTo(300, 0.9).children('.tipBody').html( tip );


    // calculate position of tooltip
    var el = $(this),
        pos = el.position(), // get position of clicked element
        w = el.outerWidth(), // get width of clicked element, to find its center
        newtop = pos.top - tooltip.outerHeight() , // calculate top position of tooltip
        newleft = pos.left + (w/2) - (tooltip.outerWidth()/2); // calculate left position of tooltip

    //set position
    $('.tooltip').css('left', newleft )  ;
    $('.tooltip').css('top',  newtop );

    hideTip = false;
});