JQuery实现表格动态增长行并对新行添加事件

时间  2021-03-20 标签 javascript css html java node jquery c++ ide 函数 oop

实现功能：javascript

一般在编辑表格时表格的行数是不肯定的，若是一次增长太多行可能致使页面内容太多，反应变慢；经过此程序实现表格动态增长行，一直保持最下面有多个空白行。css

效果：html

一：原始页面java

二：表1增长新行并绑定timepickernode

三：表2自动增长行，新行绑定timepickerjquery

HTML源码：c++

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<!DOCTYPE html>
< html xmlns = "https://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源码：ide

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/// <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();
 
//为除全部行添加事件，当得到焦点时自动增长新行
for ( var i = 0; i < tb.rows.length; i++) {
AddAutoRowsEvent(tb.rows[i]);
}
});
}
});
//自动增长行
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 = $(lastRow).clone( true , true );
//将新行添加到最后一行以前
row.insertBefore($(tb).find( "tr:last" )).show();
//为新增长的行添加事件
//AddAutoRowsEvent(tb.rows[tb.rows.length - 2]);
//若是有回调函数则执行
if ( typeof (rowfunction) == 'function' ) {
rowfunction(row);
}
}
}
}
 
//为指定行增长事件
function AddAutoRowsEvent(tr) {
//若是是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:要增长的行数
//bAutoRows:是否要添加自动增长行的属性
$.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以前/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) { //若是未指定清除起始列则从第一列清除
startColnum = 0;
}
if (endColumn > cellsCount - 1 || !endColumn) { //若是未指定清除终止列则清除到最后一列前(一般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);
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