$('.showImg').click(function(){ var src = $(this).prevAll('input').val(); layer.open({ content:'', }); $("").attr("src", src).load(function() {//imgSrc是图片地址 var realWidth = this.width;//图片宽 var realHeight = this.height;//图片高 $imgw = realWidth; var w_w = $(window).width(); var w_h = $(window).height(); var go_l = (w_w - realWidth)/2; var go_t = (w_h - realHeight)/2-70; if($imgw >= w_w){//当图片宽大于窗口宽时 $imgw = w_w; go_l = 0; $('.content_img').css('width',w_w-40); } $('.layui-layer-dialog').width($imgw).css({ 'left':go_l, 'top':go_t }); }) });