复制代码代码如下：
//清空フォーム选择
function clearform（id）{
var formobj = document.getElementById（id）;
if（formobj == undefined）{
戻る;
}
for（var i = 0; i <formobj.elements.length; i ++）{
if（formobj.elements [i] .type == "text"）{
formobj.elements [i] .value = "";
}
else if（formobj.elements [i] .type == "password"）{
formobj.elements [i] .value = "";
}
else if（formobj.elements [i] .type == "Radio"）{
formobj.elements [i] .checked = false;
}
else if（formobj.elements [i] .type == "チェックボックス"）{
formobj.elements [i] .checked = false;
}
else if（formobj.elements [i] .type == "select-one"）{
formobj.elements [i] .options [0] .selected = true;
}
else if（formobj.elements [i] .type == "select-multiple"）{
for（var j = 0; j <formobj.elements [i] .options.length; j ++）{
formobj.elements [i] .options [j] .selected = false;
}
}
else if（formobj.elements [i] .type == "file"）{
//formobj.elements [i] .select（）;
//document.selection.clear（）;
// IE、Opera、Safari、Chromeの場合
var file = formobj.elements [i];
if（file.outerhtml）{
file.outerhtml = file.outerhtml;
}それ以外{
file.value = ""; // ff（包括3.5）
}
}
else if（formobj.elements [i] .type == "textarea"）{
formobj.elements [i] .value = "";
}
}
}