Trying to sort html table with javascript on page

  • Resolved sfklaas

    (@sfklaas)


    6 years, 6 months ago

    WP Newbie here… I am trying to make a sort-able html table with javascript. And when searching how to do it, I came across this link from w3schools:(https://www.w3schools.com/howto/howto_js_sort_table.asp).

    I just tried copying and pasting the code to my page to see if it works, but it only displays the table without having the clickable headings to sort. I also noticed when I use the “code editor” when editing the WP page in dashboard, some of the code scripts disappear when updating the page. Shouldn’t I just be able to copy and paste this code into my page and it should work? thanks for your help!

    The code I am trying to add:

    <html>
<head>
<title>Sort a HTML Table Alphabetically</title>
<style>
table {
  border-spacing: 0;
  width: 100%;
  border: 1px solid #ddd;
}

th {
  cursor: pointer;
}

th, td {
  text-align: left;
  padding: 16px;
}

tr:nth-child(even) {
  background-color: #f2f2f2
}
</style>
</head>
<body>

<p><strong>Click the headers to sort the table.</strong></p>
<p>The first time you click, the sorting direction is ascending (A to Z).</p>
<p>Click again, and the sorting direction will be descending (Z to A):</p>

<table id="myTable">
  <tr>
   <!--When a header is clicked, run the sortTable function, with a parameter, 0 for sorting by names, 1 for sorting by country:-->  
    <th onclick="sortTable(0)">Name</th>
    <th onclick="sortTable(1)">Country</th>
  </tr>
  <tr>
    <td>Berglunds snabbkop</td>
    <td>Sweden</td>
  </tr>
  <tr>
    <td>North/South</td>
    <td>UK</td>
  </tr>
  <tr>
    <td>Alfreds Futterkiste</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Koniglich Essen</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Magazzini Alimentari Riuniti</td>
    <td>Italy</td>
  </tr>
  <tr>
    <td>Paris specialites</td>
    <td>France</td>
  </tr>
  <tr>
    <td>Island Trading</td>
    <td>UK</td>
  </tr>
  <tr>
    <td>Laughing Bacchus Winecellars</td>
    <td>Canada</td>
  </tr>
</table>

<script>
function sortTable(n) {
  var table, rows, switching, i, x, y, shouldSwitch, dir, switchcount = 0;
  table = document.getElementById("myTable");
  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 (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;
        }
      }
    }
    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;
      }
    }
  }
}
</script>

</body>
</html>

    The page I need help with: [log in to see the link]

Viewing 2 replies - 1 through 2 (of 2 total)
  • Thread Starter sfklaas

    (@sfklaas)

    6 years, 6 months ago

    Not sure if this was the proper way, but I got it working by adding the “scripts n styles” plugin and copied/pasted the code above in the “Scripts” section and in the “html” section.

    Moderator bcworkz

    (@bcworkz)

    6 years, 6 months ago

    I’m glad you found a solution!

    FWIW, you cannot place script blocks within the WP page editor, as you have discovered. The editor’s parser corrupts scripts placed there. A script plugin is indeed the easiest solution. Alternatives include adding script via shortcode, enqueuing script placed in an external file, or adding script into a custom page template.

    For the benefit of anyone landing here via search as much as FYI 🙂

Viewing 2 replies - 1 through 2 (of 2 total)

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