javascript - 为html表格实现数字排序？

Question

谁能帮我修改这段代码以支持数字排序。目前它只支持按字母顺序排序，我自己不是 js 编写者，我在网上找到了这个。我只需要它来排序数字，而不是字母。

奖励:是否可以让它支持数字和字符串

这是按字母顺序排序的工作链接。 jsfiddle.net

谢谢。

function sortTable(table, col, reverse) {
    var tb = table.tBodies[0], // use `<tbody>` to ignore `<thead>` and `<tfoot>` rows
        tr = Array.prototype.slice.call(tb.rows, 0), // put rows into array
        i;
    reverse = -((+reverse) || -1);
    tr = tr.sort(function (a, b) { // sort rows
        return reverse // `-1 *` if want opposite order
            * (a.cells[col].textContent.trim() // using `.textContent.trim()` for test
                .localeCompare(b.cells[col].textContent.trim())
               );
    });
    for(i = 0; i < tr.length; ++i) tb.appendChild(tr[i]); // append each row in order
}

function makeSortable(table) {
    var th = table.tHead, i;
    th && (th = th.rows[0]) && (th = th.cells);
    if (th) i = th.length;
    else return; // if no `<thead>` then do nothing
    while (--i >= 0) (function (i) {
        var dir = 1;
        th[i].addEventListener('click', function () {sortTable(table, i, (dir = 1 - dir))});
    }(i));
}

function makeAllSortable(parent) {
    parent = parent || document.body;
    var t = parent.getElementsByTagName('table'), i = t.length;
    while (--i >= 0) makeSortable(t[i]);
}

window.onload = function () {makeAllSortable();};

Answer 1

这对字符串和数字都有效

if(!isNaN(a.cells[col].textContent) && !isNaN(b.cells[col].textContent))
        return reverse * ((+a.cells[col].textContent) - (+b.cells[col].textContent))
       return reverse // `-1 *` if want opposite order
            * (a.cells[col].textContent.trim() // using `.textContent.trim()` for test
                .localeCompare(b.cells[col].textContent.trim())
               );

https://jsfiddle.net/oqr0mjc6/3/