ParentNode.replaceChildren()

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句法
范例
规范
浏览器兼容性
另请参阅
相关话题

这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

ParentNode.replaceChildren() method replaces the existing children of a 节点 with a specified new set of children. These can be DOMString or 节点 对象。

句法

// [Throws, Unscopable]
ParentNode.replaceChildren(...nodesOrDOMStrings) // returns undefined

参数

nodesOrDOMStrings: 一组 节点 or DOMString objects to replace the ParentNode 's existing children with. If no replacement objects are specified, then the ParentNode is emptied of all child nodes.

异常

HierarchyRequestError ： constraints of the node tree are violated.

范例

Emptying a node

replaceChildren() provides a very convenient mechanism for emptying a node of all its children. You simply call it on the parent node without any argument specified:

myNode.replaceChildren();

Transferring nodes between parents

replaceChildren() enables you to easily transfer nodes between parents, without having to resort to verbose looping code. For example, say we have a simple application allowing you to choose what food you want for your party. This HTML might look something like this:

<h2>Party food option list</h2>
<main>
  <div>
    <label for="no">No thanks!</label>
    <select id="no" multiple size="10">
      <option>Apples</option>
      <option>Oranges</option>
      <option>Grapes</option>
      <option>Bananas</option>
      <option>Kiwi fruits</option>
      <option>Chocolate cookies</option>
      <option>Peanut cookies</option>
      <option>Chocolate bars</option>
      <option>Ham Sandwiches</option>
      <option>Cheese Sandwiches</option>
      <option>Falafel sandwiches</option>
      <option>Ice cream</option>
      <option>Jelly</option>
      <option>Carrot sticks and houmous</option>
      <option>Margherita pizza</option>
      <option>Pepperoni pizza</option>
      <option>Vegan veggie pizza</option>
    </select>
  </div>
  <div class="buttons">
    <button id="to-yes">Transfer to "Yes" --></button>
    <button id="to-no"><-- Transfer to "No"</button>
  </div>
  <div>
    <label for="yes">Yes please!</label>
    <select id="yes" multiple size="10">
    </select>
  </div>
</main>

It would make sense to use some simple CSS to lay out the two select lists in a line alongside one another, with the control buttons in between them:

main {
  display: flex;
}
div {
  margin-right: 20px;
}
label, button {
  display: block;
}
.buttons {
  display: flex;
  flex-flow: column;
  justify-content: center;
}
select {
  width: 200px;
}

What we want to do is transfer any selected options in the "no" list over to the "yes" list when the "yes" button is pressed, and transfer any selected options in the "yes" list over to the "no" list when the "no" button is pressed.

To do this, we give each of the buttons a click event handler, which collects together the selected options you want to transfer in one constant, and the existing options in the list you are transferring to in another constant. It then calls replaceChildren() on the list to transfer the options to, using the spread operator to pass in all the options contained in both constants.

const noSelect = document.getElementById('no');
const yesSelect = document.getElementById('yes');
const noBtn = document.getElementById('to-no');
const yesBtn = document.getElementById('to-yes');
yesBtn.addEventListener('click', () => {
  const selectedTransferOptions = document.querySelectorAll('#no option:checked');
  const existingYesOptions = document.querySelectorAll('#yes option');
  yesSelect.replaceChildren(...selectedTransferOptions, ...existingYesOptions);
});
noBtn.addEventListener('click', () => {
  const selectedTransferOptions = document.querySelectorAll('#yes option:checked');
  const existingNoOptions = document.querySelectorAll('#no option');
  noSelect.replaceChildren(...selectedTransferOptions, ...existingNoOptions);
});

The end result looks like this:

规范

规范	状态	注释
DOM The definition of 'ParentNode.replaceChildren()' in that specification.	实时标准	初始定义。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`replaceChildren`	Chrome No	Edge No	Firefox 78	IE No	Opera No	Safari 14	WebView Android No	Chrome Android No	Firefox Android No	Opera Android No	Safari iOS 14	Samsung Internet Android No

图例

完整支持
不支持
实验。期望将来行为有所改变。

另请参阅

元数据

最后修改： Jun 12, 2020

DOM (文档对象模型)
ParentNode
特性
方法
1. append()
2. prepend()
3. querySelector()
4. querySelectorAll()
5. replaceChildren()
实现通过：
DOM 相关页面

在此页

句法

参数

异常

范例

Emptying a node

Transferring nodes between parents

规范

浏览器兼容性

图例

另请参阅

相关话题