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handle block element

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This commit is contained in:
Yanzhen Yu
2026-04-01 12:00:00 +08:00
parent 9667a9ae46
commit 2d1d3596b8
5 changed files with 77 additions and 2 deletions
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12
src/rebuild.ts
View File

@@ -53,7 +53,8 @@ function buildNode(n: serializedNodeWithId, doc: Document): Node | null {
node = doc.createElement(tagName);
}
for (const name in n.attributes) {
if (n.attributes.hasOwnProperty(name)) {
// attribute names start with rr_ are internal attributes added by rrweb
if (n.attributes.hasOwnProperty(name) && !name.startsWith('rr_')) {
let value = n.attributes[name];
value = typeof value === 'boolean' ? '' : value;
const isTextarea = tagName === 'textarea' && name === 'value';
@@ -74,6 +75,15 @@ function buildNode(n: serializedNodeWithId, doc: Document): Node | null {
} catch (error) {
// skip invalid attribute
}
} else {
// handle internal attributes
if (n.attributes.rr_width) {
(node as HTMLElement).style.width = n.attributes.rr_width as string;
}
if (n.attributes.rr_height) {
(node as HTMLElement).style.height = n.attributes
.rr_height as string;
}
}
}
return node;

14
src/snapshot.ts
View File

@@ -78,6 +78,7 @@ function isSVGElement(el: Element): boolean {
return el.tagName === 'svg' || el instanceof SVGElement;
}
const BLOCK_CLASS = 'rr-block';
function serializeNode(n: Node, doc: Document): serializedNode | false {
switch (n.nodeType) {
case n.DOCUMENT_NODE:
@@ -93,6 +94,7 @@ function serializeNode(n: Node, doc: Document): serializedNode | false {
systemId: (n as DocumentType).systemId,
};
case n.ELEMENT_NODE:
const needBlock = (n as HTMLElement).classList.contains(BLOCK_CLASS);
const tagName = (n as HTMLElement).tagName.toLowerCase();
let attributes: attributes = {};
for (const { name, value } of Array.from((n as HTMLElement).attributes)) {
@@ -138,12 +140,18 @@ function serializeNode(n: Node, doc: Document): serializedNode | false {
attributes.selected = (n as HTMLOptionElement).selected;
}
}
if (needBlock) {
const { width, height } = (n as HTMLElement).getBoundingClientRect();
attributes.rr_width = `${width}px`;
attributes.rr_height = `${height}px`;
}
return {
type: NodeType.Element,
tagName,
attributes,
childNodes: [],
isSVG: isSVGElement(n as Element) || undefined,
needBlock,
};
case n.TEXT_NODE:
// The parent node may not be a html element which has a tagName attribute.
@@ -195,10 +203,14 @@ export function serializeNodeWithId(
});
(n as INode).__sn = serializedNode;
map[serializedNode.id] = n as INode;
let recordChild = !skipChild;
if (serializedNode.type === NodeType.Element) {
recordChild = recordChild && !serializedNode.needBlock;
}
if (
(serializedNode.type === NodeType.Document ||
serializedNode.type === NodeType.Element) &&
!skipChild
recordChild
) {
for (const childN of Array.from(n.childNodes)) {
const serializedChildNode = serializeNodeWithId(childN, doc, map);

1
src/types.ts
View File

@@ -28,6 +28,7 @@ export type elementNode = {
attributes: attributes;
childNodes: serializedNodeWithId[];
isSVG?: true;
needBlock?: boolean;
};
export type textNode = {

25
test/__snapshots__/integration.ts.snap
View File

@@ -48,6 +48,31 @@ exports[`[html file]: basic.html 1`] = `
</head><body></body></html>"
`;
exports[`[html file]: block-element.html 1`] = `
"<!DOCTYPE html><html xmlns=\\"http://www.w3.org/1999/xhtml\\" lang=\\"en\\"><head>
<meta charset=\\"UTF-8\\" />
<meta name=\\"viewport\\" content=\\"width=device-width, initial-scale=1.0\\" />
<meta http-equiv=\\"X-UA-Compatible\\" content=\\"ie=edge\\" />
<title>Document</title>
<style>
.big {
width: 50px;
height: 50px;
}
.small {
width: 50px;
height: 100px;
float: left;
}
</style>
</head> <body>
<div class=\\"rr-block big\\" style=\\"width: 50px; height: 50px;\\"></div>
<div>record 2</div>
<div class=\\"rr-block small\\" style=\\"width: 50px; height: 100px;\\"></div>
<div class=\\"rr-block\\" style=\\"height: 200px; width: 100px\\"></div>
</body></html>"
`;
exports[`[html file]: cors-style-sheet.html 1`] = `
"<!DOCTYPE html><html xmlns=\\"http://www.w3.org/1999/xhtml\\" lang=\\"en\\"><head>
<meta charset=\\"UTF-8\\" />

27
test/html/block-element.html Normal file
View File

@@ -0,0 +1,27 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Document</title>
<style>
.big {
width: 50px;
height: 50px;
}
.small {
width: 50px;
height: 100px;
float: left;
}
</style>
</head>
<body>
<div class="rr-block big">block 1</div>
<div>record 2</div>
<div class="rr-block small">block 3</div>
<div class="rr-block" style="height: 200px; width: 100px">block 3</div>
</body>
</html>