/*弹框*/ function tankuang(){ var bh = $("body").height(); var bw = $("body").width(); $(".full_bg").css({ height:bh, width:bw, display:"block" }); var _scrollHeight = $(document).scrollTop(),//获取当前窗口距离页面顶部高度 _windowHeight = $(window).height(),//获取当前窗口高度 _windowWidth = $(window).width(),//获取当前窗口宽度 _popupHeight = $('.yu_tan').height(),//获取弹出层高度 _popupWeight = $('.yu_tan').width();//获取弹出层宽度 posiTop = (_windowHeight - _popupHeight)/2 + _scrollHeight; posiLeft = (_windowWidth - _popupWeight)/2; $(".yu_tan").css({"left": posiLeft + "px","top":posiTop + "px","display":"block"});//设置position $("html").css("overflow","hidden"); $("body").css("overflow","hidden"); $(".yu_tan").show(); } $('.cancel').click(function(){ $("html").css("overflow","auto"); $("body").css("overflow","auto"); $(".full_bg").hide(); $(".yu_tan").hide(); });