表過濾器/搜索兩列-有解無憂

í正在嘗試通過查看 col0 或 col1 中的資料來過濾此搜索/過濾功能。我正在嘗試更改 JS，查看td = tr[i].getElementsByTagName("td")[0];and td = tr[i].getElementsByTagName("td")[1];，但無法使其正常作業。

用于搜索名稱（不是國家/地區）的代碼：

function myFunction() {
  var input, filter, table, tr, td, i, txtValue;
  input = document.getElementById("myInput");
  filter = input.value.toUpperCase();
  table = document.getElementById("myTable");
  tr = table.getElementsByTagName("tr");
  for (i = 0; i < tr.length; i  ) {
    td = tr[i].getElementsByTagName("td")[0];
    if (td) {
      txtValue = td.textContent || td.innerText;
      if (txtValue.toUpperCase().indexOf(filter) > -1) {
        tr[i].style.display = "";
      } else {
        tr[i].style.display = "none";
      }
    }       
  }
}

* {
  box-sizing: border-box;
}

#myInput {
  background-image: url('/css/searchicon.png');
  background-position: 10px 10px;
  background-repeat: no-repeat;
  width: 100%;
  font-size: 16px;
  padding: 12px 20px 12px 40px;
  border: 1px solid #ddd;
  margin-bottom: 12px;
}

#myTable {
  border-collapse: collapse;
  width: 100%;
  border: 1px solid #ddd;
  font-size: 18px;
}

#myTable th, #myTable td {
  text-align: left;
  padding: 12px;
}

#myTable tr {
  border-bottom: 1px solid #ddd;
}

#myTable tr.header, #myTable tr:hover {
  background-color: #f1f1f1;
}

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>

<h2>My Customers</h2>

<input type="text" id="myInput" onkeyup="myFunction()" placeholder="Search for names.." title="Type in a name">

<table id="myTable">
  <tr class="header">
    <th style="width:60%;">Name</th>
    <th style="width:40%;">Country</th>
  </tr>
  <tr>
    <td>Alfreds Futterkiste</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Berglunds snabbkop</td>
    <td>Sweden</td>
  </tr>
  <tr>
    <td>Island Trading</td>
    <td>UK</td>
  </tr>
  <tr>
    <td>Koniglich Essen</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Laughing Bacchus Winecellars</td>
    <td>Canada</td>
  </tr>
  <tr>
    <td>Magazzini Alimentari Riuniti</td>
    <td>Italy</td>
  </tr>
  <tr>
    <td>North/South</td>
    <td>UK</td>
  </tr>
  <tr>
    <td>Paris specialites</td>
    <td>France</td>
  </tr>
</table>

</body>
</html>

uj5u.com熱心網友回復：

您可以抓住textContent兩列的，然后顯示textContent包含的行filterText。

我還對您的代碼進行了以下更改：

將表格標題<thead>和表格正文包裹在<tbody>.
使用Element.children回圈遍歷表中的所有行。
使用Element.firstElementChild和Element.lastElementChild來抓取每一行的第一列和第二列。
使用String.prototype.includes檢查搜索文本是否存在于列中。
傳遞event給函式。

let tbody = document.getElementById("table-body");

function myFunction(e) {
  const filterText = e.target.value.toUpperCase();
  Array.from(tbody.children).forEach((row) => {
    const name = row.firstElementChild.textContent.toUpperCase();
    const country = row.lastElementChild.textContent.toUpperCase();

    if (name.includes(filterText) || country.includes(filterText)) {
      row.style.display = "table-row";
    } else {
      row.style.display = "none";
    }
  })
}

* {
  box-sizing: border-box;
}

#myInput {
  background-image: url('/css/searchicon.png');
  background-position: 10px 10px;
  background-repeat: no-repeat;
  width: 100%;
  font-size: 16px;
  padding: 12px 20px 12px 40px;
  border: 1px solid #ddd;
  margin-bottom: 12px;
}

#myTable {
  border-collapse: collapse;
  width: 100%;
  border: 1px solid #ddd;
  font-size: 18px;
}

#myTable th,
#myTable td {
  text-align: left;
  padding: 12px;
}

#myTable tr {
  border-bottom: 1px solid #ddd;
}

#myTable tr.header,
#myTable tr:hover {
  background-color: #f1f1f1;
}

<h2>My Customers</h2>
<input type="text" id="myInput" onkeyup="myFunction(event)" placeholder="Search for names.." title="Type in a name">

<table id="myTable">
  <thead>
    <tr class="header">
      <th style="width:60%;">Name</th>
      <th style="width:40%;">Country</th>
    </tr>
  </thead>
  <tbody id="table-body">
    <tr>
      <td>Alfreds Futterkiste</td>
      <td>Germany</td>
    </tr>
    <tr>
      <td>Berglunds snabbkop</td>
      <td>Sweden</td>
    </tr>
    <tr>
      <td>Island Trading</td>
      <td>UK</td>
    </tr>
    <tr>
      <td>Koniglich Essen</td>
      <td>Germany</td>
    </tr>
    <tr>
      <td>Laughing Bacchus Winecellars</td>
      <td>Canada</td>
    </tr>
    <tr>
      <td>Magazzini Alimentari Riuniti</td>
      <td>Italy</td>
    </tr>
    <tr>
      <td>North/South</td>
      <td>UK</td>
    </tr>
    <tr>
      <td>Paris specialites</td>
      <td>France</td>
    </tr>
    <tbody>
</table>

如果有兩個以上的列并且您想基于所有列應用過濾器，那么您可以使用Array.prototype.some并檢查是否有任何列包含搜索文本。

顯示代碼片段

let tbody = document.getElementById("table-body");

function myFunction(e) {
  const filterText = e.target.value.toUpperCase();
  Array.from(tbody.children).forEach((row) => {
    const showRow = Array.from(row.children).some(c => c.textContent.toUpperCase().includes(filterText))
    if (showRow) {
      row.style.display = "table-row";
    } else {
      row.style.display = "none";
    }
  })
}

* {
  box-sizing: border-box;
}

#myInput {
  background-image: url('/css/searchicon.png');
  background-position: 10px 10px;
  background-repeat: no-repeat;
  width: 100%;
  font-size: 16px;
  padding: 12px 20px 12px 40px;
  border: 1px solid #ddd;
  margin-bottom: 12px;
}

#myTable {
  border-collapse: collapse;
  width: 100%;
  border: 1px solid #ddd;
  font-size: 18px;
}

#myTable th,
#myTable td {
  text-align: left;
  padding: 12px;
}

#myTable tr {
  border-bottom: 1px solid #ddd;
}

#myTable tr.header,
#myTable tr:hover {
  background-color: #f1f1f1;
}

<h2>My Customers</h2>
<input type="text" id="myInput" onkeyup="myFunction(event)" placeholder="Search for names.." title="Type in a name">

<table id="myTable">
  <thead>
    <tr class="header">
      <th style="width:60%;">Name</th>
      <th style="width:40%;">Country</th>
    </tr>
  </thead>
  <tbody id="table-body">
    <tr>
      <td>Alfreds Futterkiste</td>
      <td>Germany</td>
    </tr>
    <tr>
      <td>Berglunds snabbkop</td>
      <td>Sweden</td>
    </tr>
    <tr>
      <td>Island Trading</td>
      <td>UK</td>
    </tr>
    <tr>
      <td>Koniglich Essen</td>
      <td>Germany</td>
    </tr>
    <tr>
      <td>Laughing Bacchus Winecellars</td>
      <td>Canada</td>
    </tr>
    <tr>
      <td>Magazzini Alimentari Riuniti</td>
      <td>Italy</td>
    </tr>
    <tr>
      <td>North/South</td>
      <td>UK</td>
    </tr>
    <tr>
      <td>Paris specialites</td>
      <td>France</td>
    </tr>
    <tbody>
</table>

uj5u.com熱心網友回復：

您需要在每行的兩個 td 元素中搜索。在您的代碼中，您僅在第一列中搜索，因為對于您考慮的每一行，td = tr[i].getElementsByTagName("td")[0];哪個是“名稱”列。您還需要考慮第二個 td 元素：td = tr[i].getElementsByTagName("td")[1];.

在下面的代碼片段中，我只是在 myFunction() 中添加了另一個 for 回圈。它允許檢查“名稱”列 (j = 0)，就像您現在所做的那樣，然后檢查“國家”列 (j = 1)。

function myFunction() {
  var input, filter, table, tr, td, i, txtValue;
  input = document.getElementById("myInput");
  filter = input.value.toUpperCase();
  table = document.getElementById("myTable");
  tr = table.getElementsByTagName("tr");
  for (i = 0; i < tr.length; i  ) {
    //for each row check both columns
    for (j = 0; j < 2; j  ){
       td = tr[i].getElementsByTagName("td")[j];
       if (td) {
         txtValue = td.textContent || td.innerText;
         if (txtValue.toUpperCase().indexOf(filter) > -1) {
           tr[i].style.display = "";
         } else {
           tr[i].style.display = "none";
         }
       }  
    }
  }
}

* {
  box-sizing: border-box;
}

#myInput {
  background-image: url('/css/searchicon.png');
  background-position: 10px 10px;
  background-repeat: no-repeat;
  width: 100%;
  font-size: 16px;
  padding: 12px 20px 12px 40px;
  border: 1px solid #ddd;
  margin-bottom: 12px;
}

#myTable {
  border-collapse: collapse;
  width: 100%;
  border: 1px solid #ddd;
  font-size: 18px;
}

#myTable th, #myTable td {
  text-align: left;
  padding: 12px;
}

#myTable tr {
  border-bottom: 1px solid #ddd;
}

#myTable tr.header, #myTable tr:hover {
  background-color: #f1f1f1;
}

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>

<h2>My Customers</h2>

<input type="text" id="myInput" onkeyup="myFunction()" placeholder="Search for names.." title="Type in a name">

<table id="myTable">
  <tr class="header">
    <th style="width:60%;">Name</th>
    <th style="width:40%;">Country</th>
  </tr>
  <tr>
    <td>Alfreds Futterkiste</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Berglunds snabbkop</td>
    <td>Sweden</td>
  </tr>
  <tr>
    <td>Island Trading</td>
    <td>UK</td>
  </tr>
  <tr>
    <td>Koniglich Essen</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Laughing Bacchus Winecellars</td>
    <td>Canada</td>
  </tr>
  <tr>
    <td>Magazzini Alimentari Riuniti</td>
    <td>Italy</td>
  </tr>
  <tr>
    <td>North/South</td>
    <td>UK</td>
  </tr>
  <tr>
    <td>Paris specialites</td>
    <td>France</td>
  </tr>
</table>

</body>
</html>

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標籤：javascript

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