Sha256: aa6e3759fe330ceb7dd66bfc6cda50fca3a97d4952cefaaf8780b8752f7a4743
Contents?: true
Size: 1.29 KB
Versions: 46
Compression:
Stored size: 1.29 KB
Contents
"use strict";
const NODE_TYPE = require("../node-type");
const { domSymbolTree } = require("./internal-constants");
// https://dom.spec.whatwg.org/#concept-node-length
function nodeLength(node) {
switch (node.nodeType) {
case NODE_TYPE.DOCUMENT_TYPE_NODE:
return 0;
case NODE_TYPE.TEXT_NODE:
case NODE_TYPE.PROCESSING_INSTRUCTION_NODE:
case NODE_TYPE.COMMENT_NODE:
return node.data.length;
default:
return domSymbolTree.childrenCount(node);
}
}
// https://dom.spec.whatwg.org/#concept-tree-root
function nodeRoot(node) {
while (domSymbolTree.parent(node)) {
node = domSymbolTree.parent(node);
}
return node;
}
// https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor
function isInclusiveAncestor(ancestorNode, node) {
while (node) {
if (ancestorNode === node) {
return true;
}
node = domSymbolTree.parent(node);
}
return false;
}
// https://dom.spec.whatwg.org/#concept-tree-following
function isFollowing(nodeA, nodeB) {
if (nodeA === nodeB) {
return false;
}
let current = nodeB;
while (current) {
if (current === nodeA) {
return true;
}
current = domSymbolTree.following(current);
}
return false;
}
module.exports = {
nodeLength,
nodeRoot,
isInclusiveAncestor,
isFollowing
};
Version data entries
46 entries across 46 versions & 2 rubygems