鼠标悬浮停留三秒后显示大图，在网页中还是比较实用的

xOffset = 10;
yOffset = 30;
var urll;
$(".widget .ks-content a,.Box .ks-switchable-content div li a").hover(function(){
//$(".widget .ks-content a").hover(function(e){
//var goods_id = $(this).attr("href").replace("goods/","");
var goods_id = $(this).attr("href").replace("index.PHP?app=goods&id=","");
this.t = this.title;
this.title = " ";
var c = (this.t != "") ? "
" + this.t : " ";

$.post("index.PHP?app=default&act=ajaxBigImage",{goods_id: goods_id},function(data){
$.ajaxSettings.async = false;
if(data!=0){
urll = data;

$("body").append("

"+ c +"

");
return true;
}else{
return false;
}
});
/
$("#preview")
.css("top",(e.pageY - xOffset) + "px")
.css("left",(e.pageX + yOffset) + "px")
.fadeIn("fast");
/
$('#preview').css({
position:'absolute',left: ($(window).width() - $('#preview').outerWidth())/2,top: ($(window).height() - $('#preview').outerHeight())/2 + $(document).scrollTop()
});

setTimeout(function(){
$("#preview").fadeIn("fast");
},3000)

},function(){
this.title = this.t;
$("#preview").remove();
});

/
$("a.preview").mousemove(function(e){
$("#preview")
.css("top",(e.pageX + yOffset) + "px");
});
/

};

$(document).ready(function(){
imagePreview();
});

<div id="_widget_579" name="jdr_sale_list" widget_type="widget" class="widget">
<div class="sale_list mt10 clearfix">

销售排行

Box" id="Box1_1476271702">

1

2

3

4

Box Box2" id="Box2_1476271702" style="display:none;">
• 1
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后端处理

//ajax
function ajaxBigImage()
{

if(!empty($_POST['goods_id'])){
$goods_id=$_POST['goods_id'];

$goodsimg_mod = & m('goodsimage');
$uploadedfile_mod = & m('uploadedfile');
//$file_id = $goodsimg_mod->getOne("select file_id from ecm_goods_image WHERE goods_id={$goods_id} ORDER BY file_id DESC");

//获取file_id 字符串
$file_arr = $goodsimg_mod->getCol("select file_id from ecm_goods_image WHERE goods_id={$goods_id} ORDER BY file_id DESC");
if(!empty($file_arr)){
$file_str = implode(",",$file_arr);
}
//echo $file_str;

$url_arr = $uploadedfile_mod->getAll("select file_type,file_path from ecm_uploaded_file WHERE file_id IN({$file_str}) ORDER BY add_time DESC");

if(!empty($url_arr)){
foreach ($url_arr as $v){
if($v['file_type'] == 'image/gif'){
$url = $v['file_path'];
break;
exit();
}else {
unset($v);
}
}
}

//$url = $uploadedfile_mod->getOne("select file_path from ecm_uploaded_file WHERE file_id={$file_id} ORDER BY add_time DESC");

if(!empty($url)){
echo $url;
exit();
}else{
echo 0;
exit();
}
}else{
echo 0;
}
}