作者 yingfei [javascript] 2007-09-05 15:25 (点击下载) (原始帖子: dream 在 2007-09-05 15:07 被修改)) (显示不同)

function add_input()
{
	if (fnum >= 50) {
		alert("最多只能选择50个文件。");
		return false;
	}
 
	var input = inputname + fnum;
	var element = document.createElement("input");
	element.name = input;
	element.id = input;
	element.type = "file";
	element.size = "50";
	if (document.getElementById("attachment").appendChild(element) == null)
		return false;
 
	var element1 = document.createElement("input");
	element1.value = "remove";
	element1.type = "button";
 
	element1.name = "remove" + input;
	element1.id = element1.name;
	element1.size = "5";
	var rm_function = "remove_input(\"" + input + "\");";
	element1.setAttribute("onclick", rm_function);
	if (document.getElementById("attachment").appendChild(element1) == null)
		return false;
	fnum++;
	return true;
}
 
function remove_input(input)
{
	if (fnum < 1)
		return true;
 
	var child = document.getElementById(input);
	var child2 = document.getElementById("remove"+input);
	var parent = child.parentNode;
	if (parent.removeChild(child) == null) 
		return false;
	if (parent.removeChild(child2) == null) 
		return false;	
	fnum--;
	return true;
}