如何使用javascript检查表中的重复行?以下是我的代码的一部分:
<table id="t1">
<tr>
<td>Text A</td>
<td>Text B</td>
<td>Cbx A</td>
</tr>
<% int count1 = -1;
for(int i=0; i<3; i++) { %>
<tr>
<td><input type="text" id="textA<%=i%>"></td>
<td><input type="text" id="textB<%=i%>"></td>
<td><select name="cbx_A<%=i%>">
<option value="A">Option1</option>
<option value="B">Option2</option>
</select>
</td
</tr>
<%count1 =i;
}%>
<tr>
<td><input type="button" onclick="check(<%=count1%>)" value="Check"></td>
</tr>
</table>
因此基于此代码,我将有3行文本A,textB和cbxA。有了这个,我如何检查用户是否为2行或所有3行输入相同的值? 我尝试过使用servlet,但涉及的工作太多了。所以,有没有办法用java脚本来做呢?
提前感谢您提供任何可能的帮助。
答案 0 :(得分:0)
使用此代码,它将检查一个表列中的重复项 然后获取所有重复的表行并将其ID放入数组中 所以你将得到一个行数id 但是你的表必须有每行的id
var columnNumber = 1;
var table = document.getElementById('t1');
var rowLength = table.rows.length;
var arrReocrds = new Array();
var arrCount = 0;
var listCount = 0;
var arr = new Array();
$('#t1 td:nth-child(' + colNumber + ')').each(function () {
var recordValue = $(this).html().trim();
var flagFirstTime = true;
//loop through table to check redundant of current record value
for (var i = 1; i < rowLength; i += 1) {
{
var row = table.rows[i];
var recordId = //put here row.id or anything that you can put it in the list
var cell = row.cells[colNumber - 1];
var value = cell.innerText.trim();
if (value == recordValue) {
if (!arr.contains(value)) {
if (flagFirstTime != true) {
arrReocrds[arrCount] = recordId;
arrCount++;
}
else
flagFirstTime = false;
}
else
break;
}
}
}
//create list for items in column
//to be sure that the item that has been taken and checked never be checked again by their other redundant records
arr[listCount] = recordValue;
listCount++;
});