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• 句法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

iterateNext() 方法在 XPathResult interface iterates over a node set result and returns the next node from it or null if there are no more nodes.

句法

var node = result.iterateNext();
					

返回值

The next 节点 within the node set of the XPathResult .

异常

TYPE_ERR

若 XPathResult.resultType 不是 UNORDERED_NODE_ITERATOR_TYPE or ORDERED_NODE_ITERATOR_TYPE ， XPathException 类型 TYPE_ERR is thrown.

INVALID_STATE_ERR

If the document is mutated since the result was returned, an XPathException 类型 INVALID_STATE_ERR is thrown.

范例

The following example shows the use of the iterateNext() 方法。

HTML

<div>XPath example</div>
<div>Tag names of the matched nodes: <output></output></div>
					

JavaScript

var xpath = "//div";
var result = document.evaluate(xpath, document, null, XPathResult.ANY_TYPE, null);
var node = null;
var tagNames = [];
while(node = result.iterateNext()) {
  tagNames.push(node.localName);
}
document.querySelector("output").textContent = tagNames.join(", ");
					

结果

规范

规范	状态	注释
DOM (文档对象模型) 3 级 XPath 规范 The definition of 'XPathResult.iterateNext()' in that specification.	推荐	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.

No compatibility data found. Please contribute data for "api.XPathResult.iterateNext()" (depth: 1) to the MDN 兼容性数据存储库 .

元数据

• 最后修改： Dec 7, 2019

相关话题

1. XPathResult
2. 特性

   1. booleanValue
   2. invalidIteratorState
   3. numberValue
   4. resultType
   5. singleNodeValue
   6. snapshotLength
   7. stringValue
3. 方法

   1. iterateNext()
   2. snapshotItem()