JQuery实现表格动态增加行并对新行添加事件
实现功能:
通常在编辑表格时表格的行数是不确定的,如果一次增加太多行可能导致页面内容太多,反应变慢;通过此程序实现表格动态增加行,一直保持最下面有多个空白行。
效果:
一:原始页面
二:表1增加新行并绑定timepicker
三:表2自动增加行,新行绑定timepicker
HTML源码:
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<!DOCTYPE html> < 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) { $.fn.tableAutoRow.insertRow(obj); } </ script > |
JS源码:
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/// <reference path="jquery-1.7.2.min.js" /> //为表格主体添加单击事件,当单击时添加行数,使表格保持有n个空行 ( function ($) { $.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); |
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