如何使用 JavaScript 创建过滤表?

javascriptweb developmentobject oriented programming

使用 JavaScript 创建过滤表，代码如下−

示例

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<style>
   * {
      box-sizing: border-box;
   }
   .searchField {
      width: 100%;
      font-size: 16px;
      padding: 12px 20px 12px 40px;
      border: 1px solid #ddd;
      margin-bottom: 12px;
   }
   .birthDayTable {
      border-collapse: collapse;
      width: 100%;
      font-size: 18px;
   }
   .birthDayTable th, .birthDayTable td {
      text-align: left;
      padding: 12px;
   }
   .birthDayTable tr {
      border-bottom: 4px solid #ddd;
   }
   .birthDayTable tr.header, .birthDayTable tr:hover {
      background-color: #f1f1f1;
   }
</style>
</head>
<body>
<h1>Filter table example</h1>
<input type="text" class="searchField" placeholder="Friend Name:" />
<table class="birthDayTable">
<tr class="header">
<th style="width:60%;">Friends</th>
<th style="width:40%;">Birthday Month</th>
</tr>
<tr>
<td>Shawn</td>
<td>January</td>
</tr>
<tr>
<td>Ron</td>
<td>March</td>
</tr>
<tr>
<td>Jack</td>
<td>December</td>
</tr>
<tr>
<td>Simon</td>
<td>February</td>
</tr>
<tr>
<td>Ricky</td>
<td>November</td>
</tr>
</table>
<script>
   document .querySelector(".searchField") .addEventListener("keyup", searchFunction);
   function searchFunction() {
      var input, filter, table, tr, td, i, txtValue;
      input = document.querySelector(".searchField");
      filter = input.value.toUpperCase();
      table = document.querySelector(".birthDayTable");
      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";
            }
         }
      }
   }
</script>
</body>
</html>