在公司工作的时候，经常需要在前端进行这样的数据提取的操作。而之前的针对每个页面中的Table都重新写原生的JS代码效率太低，且不方便aspx对XML进行处理。
所以，在今天抽时间写了这么一个JS类，见笑了。
下面的JS请保存为“TableProcess.js”
//***************获取Table中的数据，并提供Xml内容的支持类***********
//获取指定id对应的Table对象
function TableXmlEngen(oTab) {
var oTable;
if (!oTab) {
}
else {
oTable = oTab;
}
this.Init = function(oTab) {
oTable = oTab;
};
//返回属性满足要求的所有行的数组对象
this.getRows = function(oTable, sJuageAttr, sFitValue) {
var nIndex = 0;
var oRows = new Array();
for (nIndex = 0; nIndex < oTable.rows.length; nIndex++) {
if (oTable.rows[nIndex].getAttribute(sJuageAttr) == sFitValue) {
//add to array
oRows.push(oTable.rows[nIndex]);
}
else if (!sJuageAttr || !sFitValue) {
//如果第二、三任何一个数据不存在，则表示不过滤
oRows.push(oTable.rows[nIndex]);
}
}
return oRows;
};
//返回一行的所有的列的属性值
//依赖于：getUseAttributes
this.getRowProperty = function(oRow) {
var oPropertys = [];
var nIndex = 0;
for (nIndex = 0; nIndex < oRow.cells.length; nIndex++) {
oPropertys.push(getUseAttributes(oRow.cells[nIndex]));
}
return oPropertys;
};
//返回的是键值对的集合,name:value;
//函数返回所有的有意义的属性和属性值，默认的空白属性和属性值都不会返回
this.getUseAttributes = function(oUnit) {
var nIndex = 0;
var oAttrs = [];
var oTmpData = {};
for (nIndex = 0; nIndex < oUnit.attributes.length; nIndex++) {
var oAttribute = oUnit.attributes[nIndex];
if (oAttribute.value != "null" && !oAttribute.value == false) {
oTmpData = { name: oAttribute.name, value: oAttribute.value };
oAttrs.push(oTmpData);
}
}
return oAttrs;
};
this.getRowData = function(oRow) {
var oRowData = [];
var nIndex = 0;
for (nIndex = 0; nIndex < oRow.cells.length; nIndex++) {
if (!oRow.cells[nIndex].getAttribute("name")) {
var oDic = { name: "name" + nIndex, value: oRow.cells[nIndex].innerHTML };
oRowData.push(oDic);
}
else {
var oDic = { name: oRow.cells[nIndex].getAttribute("name"), value: oRow.cells[nIndex].innerHTML };
oRowData.push(oDic);
}
}
oRowData.appendData = function(oXml, oTopNode) {
var oNewNode = oXml.createElement("data");
var nIndex = 0;
oTopNode.appendChild(oNewNode);
for (nIndex = 0; nIndex < oRowData.length; nIndex++) {
var oNode = oXml.createElement("data-collum");
var oNodeText = oXml.createTextNode(oRowData[nIndex].value);
oNode.setAttribute("name", oRowData[nIndex].name);
oNode.appendChild(oNodeText);
oNewNode.appendChild(oNode);
}
return;
};
return oRowData;
};
this.getTableData = function(sRowType, sTypeValue) {
var nIndex = 0;
var oTableInfo = [];
var oRows = getRows(oTable, sRowType, sTypeValue);
for (nIndex = 0; nIndex < oRows.length; nIndex++) {
oTableInfo.push(getRowData(oRows[nIndex]));
}
oTableInfo.createXmlObj = function() {
var sXml = "";
var nIndex = 0;
var oXml = new ActiveXObject("Microsoft.XMLDOM"); //先创建好一个空的Xml对象
var oTopNode = oXml.createElement("SunSoft_Data"); //创建一个顶级节点
oXml.appendChild(oTopNode); //将这个顶级节点加到Xml对象上
//oTopNode是顶级Node（节点）
for (nIndex = 0; nIndex < oTableInfo.length; nIndex++) {
oTableInfo[nIndex].appendData(oXml, oTopNode); //为顶级节点增加子节点，每个子节点代表一行的数据，调用的是oRowData.appendData方法
}
return oXml;
}
return oTableInfo;
};
}
下面是测试的页面源代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>测试获取表格数据</title>
<script type="text/javascript" src="TableProcess.js"></script>
<script language="JavaScript" type="text/javascript">
//传入table标签的id
function onBtnTryTable() {
var oTable = document.getElementById("TestTable");
var oTableXmlObj = new TableXmlEngen(oTable);
var oDataObj = oTableXmlObj.getTableData("row-type", "data");
var oXmlObj = oDataObj.createXmlObj();
alert(oXmlObj.xml);
}
</script>
<style type="text/css">
.style1
{
width: 100%;
}
</style>
</head>
<body>
<table class="style1" id="TestTable">
<tr row-type="data">
<td name="username">
张三
</td>
<td name="usercode">
zhangs01
</td>
</tr>
<tr row-type="data">
<td name="username">
李四
</td>
<td name="usercode">
lis01
</td>
</tr>
<tr row-type="data">
<td name="username">
王二麻子
</td>
<td name="usercode">
wangemz</data-collum>
</td>
<td name="sex">
boy
</td>
</tr>
</table>
<p>
<input id="btnTryTable" type="button" value="获取表格数据" onclick="return onBtnTryTable();" /></p>
</body>
</html>
