1. Download the plug-in for quick upload.
2. Use HTML upload control to upload with restrictions.
I will use javascript script to implement the function 2 below.
1. Dynamically add upload controls.
2. Dynamically delete the upload control.
3. Restrict users from randomly inputting paths in the upload control.
]<script>
function AddMoreRow()
{
var oRow=event.srcElement.parentNode.parentNode;
var oTable=oRow.parentNode.parentNode;
oNewRow=oTable.insertRow();
for(i=0;i<oRow.cells.length;i++)
{
oNewRow.insertCell().innerHTML=oRow.cells[i].innerHTML;
}
oRow.all("DelBtn").disabled=false;
oNewRow.all("DelBtn").disabled=false;
}
function DeleteMoreRow()
{
var oRow=event.srcElement.parentNode.parentNode;
var oTable=oRow.parentNode.parentNode;
if(oTable.rows.length>1)
{
oTable.deleteRow(oRow.rowIndex);
if(oTable.rows.length==1)
{
oTable.all("DelBtn").disabled=true;
}
}
}
function DisabledKeyInput()
{
if(event.keyCode!=8&&event.keyCode!=46)
{
event.returnValue=false;
}
}
</script>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
