document.body为null或不是对象

问题描述：

大家好，

我想在asp.net页面的加载时为iframe innerHTML属性分配一个值

asp.net页面具有MasterPage，

那是我的尝试:

Hi every body,

I want to assign a value to iframe innerHTML property on the load of the asp.net page

The asp.net page has MasterPage,

that is my try:

<asp:Content ID="Content1" ContentPlaceHolderID="OperatorContent" Runat="Server">
<iframe id="qwerty" >
                        
</iframe>
<asp:hiddenfield id="hdhiddenfield" runat="server" />
<script type="text/javascript" >

var wer = document.getElementById('<%=hdhiddenfield.ClientID %>').value;
qwerty.document.body.innerHTML = qwe;

</script>
</asp:Content>

问题是:

qwerty.document.body为null或不是对象.

它看不到iframe控件

the problem is that:

qwerty.document.body is null or not an object.

it does not see the iframe control

答

尝试这样
将上面的脚本放在这样的一个函数中，然后调用该函数

try like this
put the above script in one function like this and call that function

<script type="text/javascript" >
function fnframe()
{
var wer = document.getElementById('<%=hdhiddenfield.ClientID %>').value;
qwerty.document.body.innerHTML = qwe;
}
</script>

试试这个

try this

<body onload="enablecontrols()">

document.body为null或不是对象

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