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JS使用for迴圈遍曆Table的所有儲存格內容，jstable
JS遍曆Table的所有儲存格內容思路是遍曆Table的所有Row，遍曆Row中的每一列，擷取Table中儲存格的內容
function GetInfoFromTable(tableid) { var tableInfo = ""; var tableObj = document.getElementById(tableid); for (var i = 0; i < tableObj.rows.length; i++) { //遍曆Table的所有Row for (var j = 0; j < tableObj.rows[i].cells.length; j++) { //遍曆Row中的每一列 tableInfo += tableObj.rows[i].cells[j].innerText; //擷取Table中儲存格的內容 tableInfo += " "; } tableInfo += "\n"; } return tableInfo;}
<head runat="server">
<title></title>
<script language="javascript" type="text/javascript">
function GetList() {
var lstStaffs = document.getElementById("lstStaffs");
var strStaffs = "";
for (var i = 0; i < lstStaffs.options.length; i++) {
strStaffs += "第" + (i + 1) + "個是" + lstStaffs.options[i].value + "<br />";
}
document.getElementById("divStaffs").innerHTML = strStaffs;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ListBox ID="lstStaffs" runat="server">
<asp:ListItem>aaaa</asp:ListItem>
<asp:ListItem>bbbb</asp:ListItem>
<asp:ListItem Value="cccc">cccc</asp:ListItem>
</asp:ListBox>
<br />
<input id="Button1" type="button" onclick="GetList();" value="button" />
<div id="divStaffs">
</div>
</form>
</body>
</html>
利用JS怎遍曆table 怎用JS向td中寫入內容
<html>
<head>
<script type="text/javascript">
window.onload=function(){
var mytable=document.getElementById("mytable").getElementsByTagName("td");
for(var i=0;i<mytable.length;i++){
mytable[i].innerHTML="td_"+i;
}
};
</script>
</head>
<body>
<table id="mytable">
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
</body>
</html>
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