就是用button模拟file按钮的click() 并将file。value赋给text。value
提交的时候file里为什么空了
我并没有给file赋值 只是把file的值赋给text
估计是用button代替file时出的问题
很棘手阿主要的代码 上传处理页uploadscript.asp没有问题
我想模拟一个File
用button模拟file。click() 把file。value赋给Text0。value
<html >
<head >
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 " >
<title >上传页面 </title >
<script language= "javascript " >
var num=1;
function HandleFileButtonClick(num)
{
w=document.forms[0].elements[num];
w.click();
}
</script >
</head >
<body >
<form name= "form1 " action= "uploadscript.asp " method= "post " " enctype= "multipart/form-data " >
<input type= "file " name= "myFile0 " onchange= "Text0.value=this.value " >
<input type= "text " name= "Text0 " readonly= "true " >
<!-- Button to invoke the click of the File Input -- >
<input type= "button " onclick= "HandleFileButtonClick(0); " value= "Upload File " >
<br >
<input align= "bottom " type= "submit " name= "submit " value= "提交 " >
</body >
</html >
提交的时候file里为什么空了
我并没有给file赋值 只是把file的值赋给text
估计是用button代替file时出的问题
很棘手阿主要的代码 上传处理页uploadscript.asp没有问题
我想模拟一个File
用button模拟file。click() 把file。value赋给Text0。value
<html >
<head >
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 " >
<title >上传页面 </title >
<script language= "javascript " >
var num=1;
function HandleFileButtonClick(num)
{
w=document.forms[0].elements[num];
w.click();
}
</script >
</head >
<body >
<form name= "form1 " action= "uploadscript.asp " method= "post " " enctype= "multipart/form-data " >
<input type= "file " name= "myFile0 " onchange= "Text0.value=this.value " >
<input type= "text " name= "Text0 " readonly= "true " >
<!-- Button to invoke the click of the File Input -- >
<input type= "button " onclick= "HandleFileButtonClick(0); " value= "Upload File " >
<br >
<input align= "bottom " type= "submit " name= "submit " value= "提交 " >
</body >
</html >
请问一下动态增加file个数 又没有什么办法让原来file的值不变成空的
如果想多个file,可以在修改file控件的onclick方法,赋值本控件后隐藏掉,然后在原有位置生成一个新的。但是还涉及到显示,删除已赋值的那些控件,要求你对js比较熟悉才行
http://591wap.cn/translate/inputfile/inputfile.html
原文地址:http://www.quirksmode.org/dom/inputfile.html