<script>
var a,b
function aa(o)
{
if(o.readyState == "loading")
{
a = new Date()
x1.innerHTML=o.readyState
}
if(o.readyState =="complete")
{
b = new Date()
x2.innerHTML=b
alert("加载：" + (b-a) + "毫秒")
}
}
</script>
<body>
<div id=x1></div>
<div id=x2></div>
<img src="//blog.sfruc.edu.cn/images/blog_sfruc_edu_cn/mxh/6/o_762_1024x768.jpg" onreadystatechange="aa(this)"/>
</body>
<script>
var a,b
function aa(o)
{
if(o.readyState == "loading")
{
a = new Date()
document.getElementById("x1").style.display = "block";
document.getElementById("x1").innerHTML = "Loading...";
//x1.innerHTML=o.readyState
}
if(o.readyState =="complete")
{
b = new Date()
document.getElementById("x1").innerHTML="加载：" + (b-a)/1000 + "秒";
//document.getElementById("x1").style.display = "none";
//alert("加载：" + (b-a) + "毫秒")
}
}
</script>
<body>
<div id=x1 style="display:none"></div>
<img src="//blog.sfruc.edu.cn/images/blog_sfruc_edu_cn/mxh/6/o_762_1024x768.jpg" onreadystatechange="aa(this)"/>
</body>
