$(function () { $('.content>.left').css({ minHeight:$('.content>.left>ul').height()+$('.content>.left>.code').height()+104 }) if( $('.content>.left').height()<$('.content>.right').height()){ $('.content>.left').css({ minHeight:$('.content>.right').height() }) }else{ $('.content>.right').css({ minHeight:$('.content>.left').height() }) } });