按元素名称过滤 table

Question

我正在尝试通过在搜索表单中写入一些文本来过滤此 HTML table，这很好用，但无论何时过滤，元素都会尝试填充 table 而不是保持其原始元素宽度（table 宽度的 25%，不计算单元格之间的空间）。

function searchFilter () {
   const input = document.getElementById('myInput');
   const filter = input.value.toUpperCase();
   const table = document.getElementById('tablaPiola');
   const articule = table.getElementsByTagName('td');

   for (i = 0; i < articule.length; i++) {
      a = articule[i].getElementsByTagName("a")[0];
      txtValue = a.textContent || a.innerText;
      if (txtValue.toUpperCase().indexOf(filter) > -1) {
         articule[i].style.display = "";
         } else {
         articule[i].style.display = "none";
         }
   }
}

document.getElementById("filter-btn").addEventListener("click", searchFilter);

body {
background-color: black;
}

table
{border-spacing: 20px;
table-layout: fixed;
width: 600px;
margin: auto;
margin-top: 10px;}

td
{text-align: center;
border-radius: 10px;}

td a
{width: 100%;
display: block;
line-height: 50px;
text-decoration: none;
font-family: "Poppins";
font-weight: 700;
font-size: 12px;
color: white;}

.automatizaciones
{background-image: url("https://via.placeholder.com/100/0000FF/0000FF");
background-size: cover;}

.bpm_a_ms
{background-image: url("https://via.placeholder.com/100/0000FF/0000FF");
background-size: cover;}

.compresion
{background-image: url("https://via.placeholder.com/100/0000FF/0000FF");
background-size: cover;}

.compresion_multibanda
{background-image: url("https://via.placeholder.com/100/0000FF/0000FF");
background-size: cover;}

<input type="text" id="myInput">
<input type="button" id="filter-btn" value="Apply">
<table class="tabla_basico" id="tablaPiola">
   <tr>
      <td class="automatizaciones">
         <div class="overlay_basico"><a href="/">AUTOMATIZACIONES</a></div>
      </td>
      <td class="bpm_a_ms">
         <div class="overlay_intermedio"><a href="/">BPM A MS</a></div>
      </td>
      <td class="compresion">
         <div class="overlay_basico"><a href="compresion.html">COMPRESIÓN</a></div>
      </td>
      <td class="compresion_multibanda">
         <div class="overlay_intermedio"><a href="/">COMPRESIÓN MULTIBANDA</a></div>
       </td>
   </tr>
</table>

This is my webpage

This is how it filters

Answer 1

我原本以为 visibility: hidden 但你指出那意味着显示的那些不再在左边了。

我唯一的想法是在末尾添加填充单元格：

function searchFilter () {
   const input = document.getElementById('myInput');
   const filter = input.value.toUpperCase();
   const table = document.getElementById('tablaPiola');
   // Remove any fillers we added last time
   table.querySelectorAll(".filler").forEach(filler => {
       filler.parentNode.removeChild(filler);
   });
   const articule = table.getElementsByTagName('td');
   // Remember how many are showing at the end
   let showing = 0;

   for (i = 0; i < articule.length; i++) {
      a = articule[i].getElementsByTagName("a")[0];
      txtValue = a.textContent || a.innerText;
      if (txtValue.toUpperCase().indexOf(filter) > -1) {
         articule[i].style.display = "";
         ++showing; // Remember we're showing this one
      } else {
         articule[i].style.display = "none";
      }
   }
   // Grab the length (since `articule` is a live list
   const max = articule.length;
   // Add blank cells to the end
   while (showing < max) {
      const filler = document.createElement("td");
      filler.className = "filler";
      table.appendChild(filler);
      ++showing;
   }
}

实例：

function searchFilter () {
   const input = document.getElementById('myInput');
   const filter = input.value.toUpperCase();
   const table = document.getElementById('tablaPiola');
   // Remove any fillers we added last time
   table.querySelectorAll(".filler").forEach(filler => {
       filler.parentNode.removeChild(filler);
   });
   const articule = table.getElementsByTagName('td');
   // Remember how many are showing at the end
   let showing = 0;
   
   for (i = 0; i < articule.length; i++) {
      a = articule[i].getElementsByTagName("a")[0];
      txtValue = a.textContent || a.innerText;
      if (txtValue.toUpperCase().indexOf(filter) > -1) {
         articule[i].style.display = "";
         ++showing; // Remember we're showing this one
      } else {
         articule[i].style.display = "none";
      }
   }
   // Grab the length (since `articule` is a live list
   const max = articule.length;
   // Add blank cells to the end
   while (showing < max) {
      const filler = document.createElement("td");
      filler.className = "filler";
      table.appendChild(filler);
      ++showing;
   }
}

document.getElementById("filter-btn").addEventListener("click", searchFilter);

body {
background-color: black;
}

table
{border-spacing: 20px;
table-layout: fixed;
width: 1200px;
margin: auto;
margin-top: 100px;}

td
{text-align: center;
border-radius: 10px;}

td a
{width: 100%;
display: block;
line-height: 150px;
text-decoration: none;
font-family: "Poppins";
font-weight: 700;
font-size: 17.5px;
color: white;}

.automatizaciones
{background-image: url(imagenes/basico/automatizaciones/articulo.jpg);
background-size: cover;}

.bpm_a_ms
{background-image: url(imagenes/intermedio/bpm_a_ms/articulo.jpg);
background-size: cover;}

.compresion
{background-image: url(imagenes/basico/compresion/articulo.jpg);
background-size: cover;}

.compresion_multibanda
{background-image: url(imagenes/intermedio/compresion_multibanda/articulo.jpg);
background-size: cover;}

<input type="text" id="myInput">
<input type="button" id="filter-btn" value="Apply">
<table class="tabla_basico" id="tablaPiola">
   <tr>
      <td class="automatizaciones">
         <div class="overlay_basico"><a href="/">AUTOMATIZACIONES</a></div>
      </td>
      <td class="bpm_a_ms">
         <div class="overlay_intermedio"><a href="/">BPM A MS</a></div>
      </td>
      <td class="compresion">
         <div class="overlay_basico"><a href="compresion.html">COMPRESIÓN</a></div>
      </td>
      <td class="compresion_multibanda">
         <div class="overlay_intermedio"><a href="/">COMPRESIÓN MULTIBANDA</a></div>
       </td>
   </tr>
</table>

其他一些与主要问题没有直接关系的注释：

该代码会成为我在所有代码中所说的 The Horror of Implicit Globals. You never declare i, a, or txtValue so you end up creating global variables when you assign to them. I recommend using strict mode 的牺牲品，因此当您尝试这样做时会出现错误。
FWIW，我看到您正在使用 ES2015+ 功能（例如 const），因此您可以使用 for-of 循环而不是 for环形。 for-of 打字少了点。但是您可能需要在某些平台上填充可迭代性。我的回答展示了如何做到这一点。

按元素名称过滤 table

Filtering a table by element's name

html

javascript

css

filter

width