我有一个包含多个列的 HTML 表格。我找到了一个 JSscript w3school 来对该表进行排序。我稍微修改了这个脚本，以便能够对仅包含数字的列进行排序。 除了 1 列包含这样的值 ' 548m / 1797ft' 之外，它运行良好。这种价值追求更高？！我真的不明白这个特定的专栏出了什么问题。
<TABLE id="table" class="resp">
<thead>
<TR>
<th onclick="sortTable(0)" class="sortable" scope="col"> Position </th>
<th onclick="sortTable(1)" class="sortable" scope="col"> Sommet </th>
<th onclick="sortTable(2)" class="sortable" scope="col"> Altitude </th>
</TR>
</thead>
<tr>
<td data-label="Position"> 1 </td>
<td data-label="Sommet"> Mont Marcy </td>
<td data-label="Altitude"> 1629m / 5343ft </td>
</tr>
<tr>
<td data-label="Position"> 2 </td>
<td data-label="Sommet"> Mont Algonquin </td>
<td data-label="Altitude"> 1559m / 5114ft </td>
</tr>
<tr>
<td data-label="Position"> 3 </td>
<td data-label="Sommet"> Mont Haystack </td>
<td data-label="Altitude"> 1510m / 4953ft </td>
</tr>
<tr>
<td data-label="Position"> 4 </td>
<td data-label="Sommet"> Mont Skylight </td>
<td data-label="Altitude"> 1501m / 4923ft </td>
</tr>
<tr>
<td data-label="Position"> 5 </td>
<td data-label="Sommet"> Mont Whiteface</td>
<td data-label="Altitude">1483m / 4864ft </td>
</tr>
<tr>
<td data-label="Position"> 6 </td>
<td data-label="Sommet"> Mont Dix </td>
<td data-label="Altitude"> 1481m / 4858ft </td>
</tr>
<tr>
<td data-label="Position"> 7 </td>
<td data-label="Sommet"> Mont Gray </td>
<td data-label="Altitude"> 1475m / 4838ft </td>
</tr>
<tr>
<td data-label="Position"> 8 </td>
<td data-label="Sommet"> Mont Iroquois </td>
<td data-label="Altitude"> 1475m / 4838ft </td>
</tr>
<tr>
<td data-label="Position"> 9 </td>
<td data-label="Sommet"> Mont Iroquois </td>
<td data-label="Altitude"> 1001m / 3283ft </td>
</tr>
<tr>
<td data-label="Position"> 10 </td>
<td data-label="Sommet"> Mont St-Bruno </td>
<td data-label="Altitude"> 548m / 1797ft </td>
</tr>
<tr>
<td data-label="Position"> 11 </td>
<td data-label="Sommet"> Mont Royal </td>
<td data-label="Altitude"> 472m / 1548ft </td>
</tr>
</table>
我删除了几列，因为它们不涉及这个问题
还有脚本部分
function sortTable(n) {
var table, rows, switching, i, x, y, shouldSwitch, dir, switchcount = 0;
table = document.getElementById("table");
switching = true;
// Set the sorting direction to ascending:
dir = "asc";
/* Make a loop that will continue until
no switching has been done: */
while (switching) {
// Start by saying: no switching is done:
switching = false;
rows = table.rows;
/* Loop through all table rows (except the
first, which contains table headers): */
for (i = 1; i < (rows.length - 1); i++) {
// Start by saying there should be no switching:
shouldSwitch = false;
/* Get the two elements you want to compare,
one from current row and one from the next: */
x = rows[i].getElementsByTagName("TD")[n];
y = rows[i + 1].getElementsByTagName("TD")[n];
/* Check if the two rows should switch place,
based on the direction, asc or desc: */
if (!isNaN(x.innerHTML)) {
// NUMERIC
if (dir == "asc") {
if (Number(x.innerHTML) > Number(y.innerHTML)) {
shouldSwitch = true;
break;
}
} else if (dir == "desc") {
if (Number(x.innerHTML) < Number(y.innerHTML)) {
shouldSwitch = true;
break;
}
}
} else {
// ALPHABETIC
if (dir == "asc") {
if (x.innerHTML.toLowerCase() > y.innerHTML.toLowerCase()) {
// If so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
} else if (dir == "desc") {
if (x.innerHTML.toLowerCase() < y.innerHTML.toLowerCase()) {
// If so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
}
}
} // FOR LOOP
if (shouldSwitch) {
/* If a switch has been marked, make the switch
and mark that a switch has been done: */
rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
switching = true;
// Each time a switch is done, increase this count by 1:
switchcount ++;
} else {
/* If no switching has been done AND the direction is "asc",
set the direction to "desc" and run the while loop again. */
if (switchcount == 0 && dir == "asc") {
dir = "desc";
switching = true;
}
}
}
}
我认为这个特定的列会被视为字符串，但它似乎不是......所以我真的不知道该怎么做。
P.S.：抱歉我的英语不好，这不是我的语言
在将字符串传递给排序函数之前，您需要将其转换为数字。 这是一个实现：
function sortTable(n) {
var table, rows, switching, i, x, y, shouldSwitch, dir, switchcount = 0;
table = document.getElementById("table");
switching = true;
// Set the sorting direction to ascending:
dir = "asc";
/* Make a loop that will continue until
no switching has been done: */
while (switching) {
// Start by saying: no switching is done:
switching = false;
rows = table.rows;
console.dir(rows)
/* Loop through all table rows (except the
first, which contains table headers): */
for (i = 1; i < (rows.length - 1); i++) {
// Start by saying there should be no switching:
shouldSwitch = false;
/* Get the two elements you want to compare,
one from current row and one from the next: */
x = rows[i].getElementsByTagName("TD")[n];
y = rows[i + 1].getElementsByTagName("TD")[n];
/* Check if the two rows should switch place,
based on the direction, asc or desc: */
if (!isNaN(x.innerHTML)) {
// NUMERIC
if (dir == "asc") {
if (Number(x.innerHTML) > Number(y.innerHTML)) {
shouldSwitch = true;
break;
}
} else if (dir == "desc") {
if (Number(x.innerHTML) < Number(y.innerHTML)) {
shouldSwitch = true;
break;
}
}
} else {
if (/m \/ /.test(x.innerHTML)) { // Altitude
if (dir == "asc") {
if (Number(x.innerHTML.split('m')[0]) > Number(y.innerHTML.split('m')[0])) {
// If so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
} else if (dir == "desc") {
if (Number(x.innerHTML.split('m')[0]) < Number(y.innerHTML.split('m')[0])) {
// If so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
}
} else if (dir == "asc") { // ALPHABETIC
if (x.innerHTML.toLowerCase() > y.innerHTML.toLowerCase()) {
// If so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
} else if (dir == "desc") {
if (x.innerHTML.toLowerCase() < y.innerHTML.toLowerCase()) {
// If so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
}
}
} // FOR LOOP
if (shouldSwitch) {
/* If a switch has been marked, make the switch
and mark that a switch has been done: */
rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
switching = true;
// Each time a switch is done, increase this count by 1:
switchcount ++;
} else {
/* If no switching has been done AND the direction is "asc",
set the direction to "desc" and run the while loop again. */
if (switchcount == 0 && dir == "asc") {
dir = "desc";
switching = true;
}
}
}
}```