使用innerHtml没反映
function   a()
{
testdiv.innerHtml= " <h1> fda </h1> ";
}

<div   name= "testdiv ">
aaaaaaaaaaaaaaaaaaaaaaaa
</div>
<input   type= "button "   name= "button "   onclick= "a() ">

怎么没反映的呢?
它没有提示错误



------解决方案--------------------
innerHTML
not
innerHtml