本文实例讲述了jQuery动态操作表单。分享给大家供大家参考，具体如下：
<html>
<head>
<title>jquery表格操作</title>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<style type="text/css">
table
{
border: black solid 1px;
border-collapse: collapse;
}
td
{
border: black solid 1px;
padding: 3px;
}
.td_Num
{
width: 60px;
text-align: center;
}
.td_Item
{
width: 160px;
text-align: center;
}
.td_Oper
{
width: 120px;
text-align: center;
}
.td_Oper span
{
cursor: pointer;
}
</style>
</head>
<body>
<table>
<tr>
<td class='td_Num'>
序号
</td>
<td class='td_Item'>
步骤名称
</td>
<td class='td_Item'>
步骤描述
</td>
<td class='td_Oper'>
相关操作 <a href="#" rel="external nofollow" onclick="add_line();">添加</a>
</td>
</tr>
</table>
<table id="content">
</table>
<input type="button" value="提交数据" id="btnSubmit" onclick="SaveData()" />
</body>
</html>
<script type="text/javascript">
var currentStep = 0;
var max_line_num = 0;
//添加新记录
function add_line() {
max_line_num = $("#content tr:last-child").children("td").html();
if (max_line_num == null) {
max_line_num = 1;
}
else {
max_line_num = parseInt(max_line_num);
max_line_num += 1;
}
$('#content').append(
"<tr id='line" + max_line_num + "'>" +
"<td class='td_Num'>" + max_line_num + "</td>" +
"<td class='td_Item'><input type='text' class='stepName' value='步骤名称" + max_line_num + "'></input></td>" +
"<td class='td_Item'><input type='text' class='stepDescription' value='步骤描述" + max_line_num + "'></td>" +
"<td class='td_Oper'>" +
"<span onclick='up_exchange_line(this);'>上移</span> " +
"<span onclick='down_exchange_line(this);'>下移</span> " +
"<span onclick='remove_line(this);'>删除</span> " +
"</td>" +
"</tr>");
}
//删除选择记录
function remove_line(index) {
if (index != null) {
currentStep = $(index).parent().parent().find("td:first-child").html();
}
if (currentStep == 0) {
alert('请选择一项!');
return false;
}
if (confirm("确定要删除改记录吗？")) {
$("#content tr").each(function () {
var seq = parseInt($(this).children("td").html());
if (seq == currentStep) { $(this).remove(); }
if (seq > currentStep) { $(this).children("td").each(function (i) { if (i == 0) $(this).html(seq - 1); }); }
});
}
}
//上移
function up_exchange_line(index) {
if (index != null) {
currentStep = $(index).parent().parent().find("td:first-child").html();
}
if (currentStep == 0) {
alert('请选择一项!');
return false;
}
if (currentStep <= 1) {
alert('已经是最顶项了!');
return false;
}
var upStep = currentStep - 1;
//修改序号
$('#line' + upStep + " td:first-child").html(currentStep);
$('#line' + currentStep + " td:first-child").html(upStep);
//取得两行的内容
var upContent = $('#line' + upStep).html();
var currentContent = $('#line' + currentStep).html();
$('#line' + upStep).html(currentContent);
//交换当前行与上一行内容
$('#line' + currentStep).html(upContent);
$('#content tr').each(function () { $(this).css("background-color", "#ffffff"); });
$('#line' + upStep).css("background-color", "yellow");
event.stopPropagation(); //阻止事件冒泡
}
//下移
function down_exchange_line(index) {
if (index != null) {
currentStep = $(index).parent().parent().find("td:first-child").html();
}
if (currentStep == 0) {
alert('请选择一项!');
return false;
}
if (currentStep >= max_line_num) {
alert('已经是最后一项了!');
return false;
}
var nextStep = parseInt(currentStep) + 1;
//修改序号
$('#line' + nextStep + " td:first-child").html(currentStep);
$('#line' + currentStep + " td:first-child").html(nextStep);
//取得两行的内容
var nextContent = $('#line' + nextStep).html();
var currentContent = $('#line' + currentStep).html();
//交换当前行与上一行内容
$('#line' + nextStep).html(currentContent);
$('#line' + currentStep).html(nextContent);
$('#content tr').each(function () { $(this).css("background-color", "#ffffff"); });
$('#line' + nextStep).css("background-color", "yellow");
event.stopPropagation(); //阻止事件冒泡
}
//保存数据
function SaveData() {
var data = "<root>";
$('#content tr').each(function () {
data += "<item>";
var stepName = $(this).find("td:eq(1)").find("input").val();
var stepDescription = $(this).find("td:eq(2)").find("input").val();
data += " <stepName>" + stepName + "</stepName>";
data += " <stepDescription>" + stepDescription + "</stepDescription>";
data += "<item>";
});
data += "</root>";
alert(data);
}
</script>
使用本站在线HTML/CSS/JavaScript代码运行工具：http://tools.jb51.net/code/HtmlJsRun，测试运行上述代码可得到如下运行效果：
更多关于jQuery相关内容感兴趣的读者可查看本站专题：《jQuery表格(table)操作技巧汇总》、《jQuery操作xml技巧总结》、《jQuery form操作技巧汇总》、《jQuery常用插件及用法总结》、《jQuery扩展技巧总结》及《jquery选择器用法总结》
希望本文所述对大家jQuery程序设计有所帮助。
