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分享HTML FORM表单中Input标签的一个问题
如下代码
<script language=javascript>
function changeVal()
{
document.upForm.te.value = "c:/12.xml";
//此处弹出的对话框是空值
alert(document.upForm.te.value);
}
</script>
<body onload="changeVal()">
<form name="upForm" method="post" action="up2.jsp"enctype="multipart/form-data" >
<input type=file name="te">
</form>
</body>
我发现Form表单中的te标签（type类型为File）无法赋值，在changeVal函数中赋值了，但alert时，仍然是空值，真的有点晕，如果想赋值，该如何写javascript脚本代码
<script language=javascript>
function changeVal()
{
document.upForm.te.value = "c:/12.xml";
//此处弹出的对话框是空值
alert(document.upForm.te.value);
}
</script>
<body onload="changeVal()">
<form name="upForm" method="post" action="up2.jsp"enctype="multipart/form-data" >
<input type=file name="te">
</form>
</body>
我发现Form表单中的te标签（type类型为File）无法赋值，在changeVal函数中赋值了，但alert时，仍然是空值，真的有点晕，如果想赋值，该如何写javascript脚本代码
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bitisfox 2003-05-31
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value Property
--------------------------------------------------------------------------------
Retrieves the file name of the INPUT control object after the text is set by user input.
Syntax
HTML N/A
Scripting [ sValue = ] INPUT type=file.value
Possible Values
sValue String that receives the file name value of an INPUT type=file control object.
The property is read-only. The property has no default value.
Expressions can be used in place of the preceding value(s), as of Microsoft® Internet Explorer 5. For more information, see Dynamic Properties.
Applies To
INPUT type=file
已经说明了是只读的了。
--------------------------------------------------------------------------------
Retrieves the file name of the INPUT control object after the text is set by user input.
Syntax
HTML N/A
Scripting [ sValue = ] INPUT type=file.value
Possible Values
sValue String that receives the file name value of an INPUT type=file control object.
The property is read-only. The property has no default value.
Expressions can be used in place of the preceding value(s), as of Microsoft® Internet Explorer 5. For more information, see Dynamic Properties.
Applies To
INPUT type=file
已经说明了是只读的了。
