我知道 :nth-child 实际上是在检查“子项”与“可见子项”,但是是否有一个选择器可以处理可见子项?
假设我有一个表格,我将奇数行设置为不同的颜色
我有一个搜索过滤器,可以隐藏与搜索不匹配的行。现在,当我搜索时,行不再交替颜色。
当然,我可以向每个元素添加/删除类,我基本上已经这样做来隐藏/显示它们,但我想我会问是否有 CSS 方法可以做到这一点。
const searchElem = document.querySelector('input');
const tableElem = document.querySelector('table');
function search() {
  const str = searchElem.value.toLowerCase();
  const rows = tableElem.querySelectorAll('tr');
  rows.forEach(function(row){
    const text = row.textContent.toLowerCase();
    if (str.length && !text.includes(str)) {
      row.classList.add('hide');
    } else {
      row.classList.remove('hide');
    }
  });
}
searchElem.addEventListener('keyup', search);
tr {
  background-color: #CDF;
}
tbody>tr:nth-child(odd) {
  background-color: #DEF;
}
thead>tr {
  background-color: lightgreen;
}
.hide {
  display: none;
}
<input type="search" placeholder="search">
<table>
  <thead>
    <tr><td>Name</td><td>Amount</td></tr>
  </thead>
  <tbody>
    <tr><td>Apple</td><td>220</td></tr>
    <tr><td>Watermelon</td><td>465</td></tr>
    <tr><td>Orange</td><td>94</td></tr>
    <tr><td>Pear</td><td>567</td></tr>
    <tr><td>Cherry</td><td>483</td></tr>
    <tr><td>Strawberry</td><td>246</td></tr>
    <tr><td>Nectarine</td><td>558</td></tr>
    <tr><td>Grape</td><td>535</td></tr>
    <tr><td>Mango</td><td>450</td></tr>
    <tr><td>Blueberry</td><td>911</td></tr>
    <tr><td>Pomegranate</td><td>386</td></tr>
    <tr><td>Carambola</td><td>351</td></tr>
    <tr><td>Plum</td><td>607</td></tr>
    <tr><td>Banana</td><td>292</td></tr>
    <tr><td>Raspberry</td><td>912</td></tr>
    <tr><td>Mandarin</td><td>456</td></tr>
    <tr><td>Jackfruit</td><td>976</td></tr>
    <tr><td>Papaya</td><td>200</td></tr>
    <tr><td>Kiwi</td><td>217</td></tr>
    <tr><td>Pineapple</td><td>710</td></tr>
    <tr><td>Lime</td><td>983</td></tr>
    <tr><td>Lemon</td><td>960</td></tr>
    <tr><td>Apricot</td><td>647</td></tr>
    <tr><td>Grapefruit</td><td>861</td></tr>
    <tr><td>Melon</td><td>226</td></tr>
    <tr><td>Coconut</td><td>868</td></tr>
    <tr><td>Avocado</td><td>385</td></tr>
    <tr><td>Peach</td><td>419</td></tr>
  </tbody>
</table>
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没有选择器,但如果您愿意接受这种情况的特定解决方案,那么您可以依赖如下所示的渐变:
const searchElem = document.querySelector('input'); const tableElem = document.querySelector('table'); function search() { const str = searchElem.value.toLowerCase(); const rows = tableElem.querySelectorAll('tr'); rows.forEach(function(row){ const text = row.textContent.toLowerCase(); if (str.length && !text.includes(str)) { row.classList.add('hide'); } else { row.classList.remove('hide'); } }); } searchElem.addEventListener('keyup', search);thead>tr { background-color: lightgreen; } .hide { display: none; } table { position:relative; /* relative to all the table */ z-index: 0; } td { line-height: 1.2em; /* the height */ clip-path: inset(0); /* clip the pseudo element to td */ } tbody td:before { content: ""; position: absolute; z-index: -1; inset: 0; background: repeating-linear-gradient( #CDF 0 calc(1.2em + 4px), /* height + 2*border-spacing */ #DEF 0 calc(2.4em + 8px) /* 2*height + 4*border-spacing */ ); }