Baseline Widely available
The NodeIterator.previousNode() method returns the previous node in the set represented by the NodeIterator and moves the position of the iterator backwards within the set.
This method returns null when the current node is the first node in the set.
In old browsers, as specified in old versions of the specifications, the method may throws the INVALID_STATE_ERR DOMException if this method is called after the NodeIterator.detach() method. Recent browsers never throw.
None.
Return valueA Node representing the node before the current node in the set represented by this NodeIterator, or null if the current node is the first node in the set.
const nodeIterator = document.createNodeIterator(
document.body,
NodeFilter.SHOW_ELEMENT,
{
acceptNode(node) {
return NodeFilter.FILTER_ACCEPT;
},
},
);
currentNode = nodeIterator.nextNode(); // returns the next node
previousNode = nodeIterator.previousNode(); // same result, since we backtracked to the previous node
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Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4