XPathResult.resultType - Web APIs 编辑
The read-only resultType
property of the XPathResult
interface represents the type of the result, as defined by the type constants.
Note:
This feature is available in Web Workers.Syntax
var resultType = result.resultType;
Return value
An integer value representing the type of the result, as defined by the type constants.
Constants
Result Type Defined Constant | Value | Description |
ANY_TYPE | 0 | A result set containing whatever type naturally results from evaluation of the expression. Note that if the result is a node-set then UNORDERED_NODE_ITERATOR_TYPE is always the resulting type. |
NUMBER_TYPE | 1 | A result containing a single number. This is useful for example, in an XPath expression using the count() function. |
STRING_TYPE | 2 | A result containing a single string. |
BOOLEAN_TYPE | 3 | A result containing a single boolean value. This is useful for example, in an XPath expression using the not() function. |
UNORDERED_NODE_ITERATOR_TYPE | 4 | A result node-set containing all the nodes matching the expression. The nodes may not necessarily be in the same order that they appear in the document. |
ORDERED_NODE_ITERATOR_TYPE | 5 | A result node-set containing all the nodes matching the expression. The nodes in the result set are in the same order that they appear in the document. |
UNORDERED_NODE_SNAPSHOT_TYPE | 6 | A result node-set containing snapshots of all the nodes matching the expression. The nodes may not necessarily be in the same order that they appear in the document. |
ORDERED_NODE_SNAPSHOT_TYPE | 7 | A result node-set containing snapshots of all the nodes matching the expression. The nodes in the result set are in the same order that they appear in the document. |
ANY_UNORDERED_NODE_TYPE | 8 | A result node-set containing any single node that matches the expression. The node is not necessarily the first node in the document that matches the expression. |
FIRST_ORDERED_NODE_TYPE | 9 | A result node-set containing the first node in the document that matches the expression. |
Example
The following example shows the use of the resultType
property.
HTML
<div>XPath example</div>
<div>Is XPath result a node set: <output></output></div>
JavaScript
var xpath = "//div";
var result = document.evaluate(xpath, document, null, XPathResult.ANY_TYPE, null);
document.querySelector("output").textContent =
result.resultType >= XPathResult.UNORDERED_NODE_ITERATOR_TYPE &&
result.resultType <= XPathResult.FIRST_ORDERED_NODE_TYPE;
Result
Specifications
Specification | Status | Comment |
---|---|---|
Document Object Model (DOM) Level 3 XPath Specification The definition of 'XPathResult.resultType' in that specification. | Recommendation | Initial definition |
Browser compatibility
BCD tables only load in the browser
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