window.onresize=resizeBannerImage;//当窗口改变宽度时执行此函数 function resizeBannerImage() { var winW = $(window).width(); $(".main-banner").css('height',winW * 0.49); }
window.onresize=resizeBannerImage;//当窗口改变宽度时执行此函数 function resizeBannerImage() { var winW = $(window).width(); $(".main-banner").css('height',winW * 0.49); }