复制代码 代码如下:

//清空form选择

function clearForm(id){

var formObj = document.getElementById(id);

if(formObj == undefined){

return;

}

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 == "checkbox"){

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();

// for IE, Opera, Safari, Chrome

var file = formObj.elements[i];

if(file.outerHTML){

file.outerHTML = file.outerHTML;

}else{

file.value = ""; // FF(包括3.5)

}

}

else if(formObj.elements[i].type == "textarea"){

formObj.elements[i].value = "";

}

}

}