This time I will bring you JQuery to dynamically operate table rows and add events to new rows. What are the precautions for JQuery to dynamically operate table rows and add events to new rows? The following is a practical case. Get up and take a look. Implementation function:
Usually when editing a table, the number of rows in the table is uncertain. If too many rows are added at one time, it may cause too much content on the page and slow down the response; this is achieved through this program The table dynamically adds rows and always maintains multiple blank rows at the bottom.Effect:
One: Original page Two: Add new rows to table 1 and bind timepicker Three: Table 2 Automatically add rows, new rows are bound to timepickerHTML source code:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<link href="../Script/jquery-easyui-1.3.2/themes/default/easyui.css" rel="external nofollow" rel="stylesheet" />
<style>
.autoRows{
width: 350px; border:1px green solid;
}
.autoRows tbody tr td{
border-bottom:1px green solid;
margin:0px;
}
.autoRows thead{
background-color:#8ec7d7;
}
.autoRows tfoot {
background-color: #8ec7d7;
}
</style>
</head>
<body>
<table border="0" cellspacing="0" id="table1" class="autoRows">
<thead>
<tr>
<th>表头1</th>
<th>表头1</th>
<th>表头1</th>
</tr>
<tr>
<th>表头2</th>
<th>表头2</th>
<th>表头2</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<input id="Button1" type="button" value="insertAfter" onclick="addrow(this);" /></td>
<td>
<input id="Button3" type="button" value="Clear" onclick="$.fn.tableAutoRow.clearRowData(this, 2, 2, false);" /></td>
<td>
<input id="Text2" type="text" value="aaaa" /></td>
</tr>
<tr>
<td>
<input id="Button2" type="button" value="insertBefore" onclick="$.fn.tableAutoRow.insertRow(this,1,true,false);" /></td>
<td>
<input id="Button4" type="button" value="Reset" onclick="$.fn.tableAutoRow.clearRowData(this, 2, 2, true);" /></td>
<td>
<input id="Text1" name="ttt" type="text" value="asdfasfasfdsd" /></td>
</tr>
<tr>
<td>
<input id="Button5" type="button" value="insertBefore" onclick="$.fn.tableAutoRow.insertRow(this,1,true,false);" /></td>
<td>
<input id="Button6" type="button" value="Reset" onclick="$.fn.tableAutoRow.clearRowData(this, 2, 2, true);" /></td>
<td>
<input id="Text3" type="text" name="Text3" /></td>
</tr>
</tbody>
<tfoot>
<tr>
<th>表尾1</th>
<th>表尾2</th>
<th>表尾3</th>
</tr>
</tfoot>
</table>
<p style="height:20px;"></p>
<table border="0" cellspacing="0" id="table2" class="autoRows">
<thead>
<tr>
<th>表头1</th>
<th>表头1</th>
<th>表头1</th>
</tr>
<tr>
<th>表头2</th>
<th>表头2</th>
<th>表头2</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<input id="Button7" type="button" value="insertAfter" onclick="addrow(this);" /></td>
<td>
<input id="Button8" type="button" value="Clear" onclick="$.fn.tableAutoRow.clearRowData(this, 2, 2, false);" /></td>
<td>
<input id="Text4" type="text" value="aaaa" /></td>
</tr>
<tr>
<td>
<input id="Button9" type="button" value="insertBefore" onclick="$.fn.tableAutoRow.insertRow(this, 1, true, false);" /></td>
<td>
<input id="Button10" type="button" value="Reset" onclick="$.fn.tableAutoRow.clearRowData(this, 2, 2, true);" /></td>
<td>
<input id="Text5" name="ttt" type="text" value="asdfasfasfdsd" /></td>
</tr>
<tr>
<td>
<input id="Button11" type="button" value="insertBefore" onclick="$.fn.tableAutoRow.insertRow(this, 1, true, false);" /></td>
<td>
<input id="Button12" type="button" value="Reset" onclick="$.fn.tableAutoRow.clearRowData(this, 2, 2, true);" /></td>
<td>
<input id="Text6" type="text" name="Text3" /></td>
</tr>
</tbody>
<tfoot>
<tr>
<th>表尾1</th>
<th>表尾2</th>
<th>表尾3</th>
</tr>
</tfoot>
</table>
</body>
</html>
<script src="../Script/jquery-1.7.2.min.js"></script>
<script src="../Script/jquery.tableAutoRow.js"></script>
<script src="../Script/jquery-easyui-1.3.2/jquery.easyui.min.js"></script>
<script src="../Script/jquery.timepicker.js"></script>
<script type="text/javascript">
$(function () {
$(".autoRows").tableAutoRow(aaa);
function aaa(row) {
$(row).find(':text').timepicker();
}
});
function addrow(obj) {
$.fn.tableAutoRow.insertRow(obj);
}
</script>JS source code:
/// <reference path="jquery-1.7.2.min.js" />
//为表格主体添加单击事件,当单击时添加行数,使表格保持有n个空行
(function ($) {
$.fn.extend({
rowfunction: null,
tableAutoRow: function (newRowFunction) {
rowfunction = newRowFunction;
return $(this).each(function () {
var tb = this;
if (!(this.tagName.toUpperCase() == "TBODY")) {
if (!this.tBodies[0]) {
return;
} else {
tb = this.tBodies[0];
}
}
//添加一个隐藏行，后面新增行复制此行
var lastRow = tb.rows[tb.rows.length - 1];
var row = $(lastRow).clone(true, true);
$(row).insertAfter($(tb).find("tr:last")).hide();
//为除所有行添加事件，当获得焦点时自动增加新行
for (var i = 0; i < tb.rows.length; i++) {
AddAutoRowsEvent(tb.rows[i]);
}
});
}
});
//自动增加行
function autoRows(e) {
var e = e || event;
var obj = e.target || e.srcElement;
while (obj.tagName != "TR") {
obj = obj.parentNode;
}
var tb = obj.parentNode;
var index = $(obj).index();
var n = 5 - (tb.rows.length - index);
if (n > 0) {
var lastRow = tb.rows[tb.rows.length - 1];
for (var j = 0; j < n; j++) {
var row = $(lastRow).clone(true, true);
//将新行添加到最后一行之前
row.insertBefore($(tb).find("tr:last")).show();
//为新增加的行添加事件
//AddAutoRowsEvent(tb.rows[tb.rows.length - 2]);
//如果有回调函数则执行
if (typeof (rowfunction) == 'function') {
rowfunction(row);
}
}
}
}
//为指定行增加事件
function AddAutoRowsEvent(tr) {
//如果是JQuery对象则转为HTML对象
if (tr instanceof jQuery) {
tr = tr[0];
}
$(tr).bind('click', autoRows);
var c = tr.cells.length;
for (var j = 0; j < c; j++) {
var childs = tr.cells[j].childNodes;
for (var k = 0; k < childs.length; k++) {
if (childs[k].type == "text" || childs[k].type == "textarea" || childs[k].type == "button") {
$(childs[k]).bind('focus', autoRows);
}
}
}
}
//在表格中指定位置插入指定行数,新插入的行内容为同一表格主体最后一行
//obj:行内的任意对象
//n:要增加的行数
//bAutoRows:是否要添加自动增加行的属性
$.fn.tableAutoRow.insertRow = function (obj, n, bAutoRows, isInsertAfter) {
var loop = 0; //加入循环次数，防止死循环
while (obj.tagName != "TR" && loop < 10) {
obj = obj.parentNode;
loop++;
}
if (obj.tagName != "TR") {
return;
}
var tb = obj.parentNode;
switch (arguments.length) {
case 3:
var isInsertAfter = true;
case 2:
var bAutoRows = true;
var isInsertAfter = true;
case 1:
var bAutoRows = true;
var isInsertAfter = true;
var n = 1;
}
for (var i = 0; i < n; i++) {
var lastRow = tb.rows[tb.rows.length - 1];
var row = $(lastRow).clone(true, true);
//将新行添加到当前行之前/后
if (isInsertAfter) {
row.insertAfter(obj).show();
} else {
row.insertBefore(obj).show();
}
if (bAutoRows) {
AddAutoRowsEvent(row);
}
}
}
//清除指定行数据
//obj为行或者行内的节点
//startColnum:起始列
//endColumn:终止列
//isReset:是否恢复到初始值
$.fn.tableAutoRow.clearRowData = function (obj, startColnum, endColumn, isReset) {
var loop = 0; //加入循环次数，防止死循环
while (obj.tagName != "TR" && loop < 10) {
obj = obj.parentNode;
loop++;
}
if (obj.tagName != "TR") {
return;
}
var cellsCount = obj.cells.length; //此行单元格总数
if (startColnum < 0 || !startColnum) { //如果未指定清除起始列则从第一列清除
startColnum = 0;
}
if (endColumn > cellsCount - 1 || !endColumn) { //如果未指定清除终止列则清除到最后一列前(通常最后一列用于放置清除按钮)
endColumn = cellsCount - 1;
}
if (isReset == undefined) {
isReset = false;
}
for (var c = startColnum; c <= endColumn; c++) //循环各列,设置单元格里的控件值
{
for (var j = 0; j < obj.cells[c].childNodes.length; j++) { //循环处理指定单元格中的子节点
var node = obj.cells[c].childNodes[j];
setObjData(node, isReset);
}
}
};
function setObjData(node, isReset) {
switch (node.type) {
case "text":
case "hidden":
case "textarea":
if (isReset) {
node.value = node.defaultValue;
} else {
node.value = "";
}
break;
case "select-one":
case "select-multiple":
if (isReset) {
for (var k = node.options.length - 1; k >= 0; k--) {
node.options[k].selected = node.options[k].defaultSelected;
}
} else {
for (var k = node.options.length - 1; k >= 0; k--) {
//node.options.remove(k);
node.options[k].selected = false;
}
}
break;
case "checkbox":
case "radio":
if (isReset) {
node.checked = node.defaultChecked;
} else {
node.checked = false;
}
break;
}
if (node.childNodes && node.childNodes.length > 0) {
var l = node.childNodes.length;
for (var i = 0; i < l; i++) {
setObjData(node.childNodes[i], isReset);
}
}
}
})(jQuery);Detailed explanation of the steps to dynamically generate Table with JQuery Ajax
Detailed explanation of the use of jQuery filter method filter()
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