mi_script.js

/**
 * Sorts a HTML table.
 * 
 * @param {HTMLTableElement} table The table to sort
 * @param {number} column The index of the column to sort
 * @param {boolean} asc Determines if the sorting will be in ascending
 */
window.onload = () => {
    // http://www.terrill.ca/sorting/
    const dataTable = document.querySelector('table')

    dataTable.id = 'sorted-table'

    const headerRow = dataTable.querySelector('tr:nth-child(1)')
    const thead = document.createElement('thead')
    thead.appendChild(headerRow)
    dataTable.prepend(thead)

    const numberRow = document.querySelector('#sorted-table tr:nth-child(1)').querySelector(':nth-child(1)')
    numberRow.setAttribute('data-tsorter', 'numeric')
    
    const sorter = tsorter.create('sorted-table')
}

function sortTableByColumn(table, column, asc = true) {
    const dirModifier = asc ? 1 : -1;
    const tBody = table.tBodies[0];
    const rows = Array.from(tBody.querySelectorAll("tr"));

    // Sort each row
    const sortedRows = rows.sort((a, b) => {
        const aColText = a.querySelector(`td:nth-child(${ column + 1 })`).textContent.trim();
        const bColText = b.querySelector(`td:nth-child(${ column + 1 })`).textContent.trim();

        return aColText > bColText ? (1 * dirModifier) : (-1 * dirModifier);
    });

    // Remove all existing TRs from the table
    while (tBody.firstChild) {
        tBody.removeChild(tBody.firstChild);
    }

    // Re-add the newly sorted rows
    tBody.append(...sortedRows);

    // Remember how the column is currently sorted
    table.querySelectorAll("th").forEach(th => th.classList.remove("th-sort-asc", "th-sort-desc"));
    table.querySelector(`th:nth-child(${ column + 1})`).classList.toggle("th-sort-asc", asc);
    table.querySelector(`th:nth-child(${ column + 1})`).classList.toggle("th-sort-desc", !asc);
}

document.querySelectorAll("table th").forEach(headerCell => {
    headerCell.addEventListener("click", () => {
        const tableElement = headerCell.parentElement.parentElement.parentElement;
        const headerIndex = Array.prototype.indexOf.call(headerCell.parentElement.children, headerCell);
        const currentIsAscending = headerCell.classList.contains("th-sort-asc");

        sortTableByColumn(tableElement, headerIndex, !currentIsAscending);
    });
});