方法1：遍历页面元素
/*清空FORM表单内容 id：表单ID*/ function ClearForm(id) {var objId = document.getElementById(id);if (objId == undefined) {return;}for (var i = 0; i < objId.elements.length; i++) {if (objId.elements[i].type == "text") {objId.elements[i].value = "";}else if (objId.elements[i].type == "password") {objId.elements[i].value = "";}else if (objId.elements[i].type == "radio") {objId.elements[i].checked = false;}else if (objId.elements[i].type == "checkbox") {objId.elements[i].checked = false;}else if (objId.elements[i].type == "select-one") {objId.elements[i].options[0].selected = true;}else if (objId.elements[i].type == "select-multiple") {for (var j = 0; j < objId.elements[i].options.length; j++) {objId.elements[i].options[j].selected = false;}}else if (objId.elements[i].type == "textarea") {objId.elements[i].value = "";}//else if (objId.elements[i].type == "file") {// //objId.elements[i].select();// //document.selection.clear();// // for IE, Opera, Safari, Chrome// var file = objId.elements[i];// if (file.outerHTML) {// file.outerHTML = file.outerHTML;// } else {// file.value = ""; // FF(包括3.5)// }//}}}方法2：使用 reset 按钮
页面中增加
<!--用来清空表单数据--><input type="reset" name="reset" style="display: none;" />
触发 reset 事件
$("input[type=reset]").trigger("click");