Run results for: Object vs array performance 2

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 DuckDuckGo/7 Safari/605.1.15

Browser: Mobile Safari 15

Operating system: iOS 15.4

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Object	51637780.0 Ops/sec
Array with constants	19064630.0 Ops/sec
Array with inline numbers (post-minification)	19545420.0 Ops/sec
Inline object	41854950.0 Ops/sec
inline array	18101710.0 Ops/sec

Tests:

Object
const node_type_html = 1; const node = {}; node.type = node_type_html; node.tag = 'div'; node.children = []; node.attrs = {}; const nodeType = node.type; const nodeTag = node.tag; const nodeChildren = node.children; const nodeAttrs = node.attrs;
Array with constants
const node_index_type = 0; const node_index_tag = 1; const node_index_children = 2; const node_index_attrs = 3; const node_type_html = 1; const node = []; node[ node_index_type ] = node_type_html; node[ node_index_tag ] = 'div'; node[ node_index_children ] = []; node[ node_index_attrs ] = {}; const nodeType = node[ node_index_type ]; const nodeTag = node[ node_index_tag ]; const nodeChildren = node[ node_index_children ]; const nodeAttrs = node[ node_index_attrs ];
Array with inline numbers (post-minification)
const node_type_html = 1; const node = []; node[ 0 ] = node_type_html; node[ 1 ] = 'div'; node[ 2 ] = []; node[ 3 ] = {}; const nodeType = node[ 0 ]; const nodeTag = node[ 1 ]; const nodeChildren = node[ 2 ]; const nodeAttrs = node[ 3 ];
Inline object
const node_type_html = 1; const node = { type: node_type_html, tag: 'div', children: [], attrs: {} }; const nodeType = node.type; const nodeTag = node.tag; const nodeChildren = node.children; const nodeAttrs = node.attrs;
inline array
const node_type_html = 1; const node = [ node_type_html, 'div', [], {} ]; const nodeType = node[ 0 ]; const nodeTag = node[ 1 ]; const nodeChildren = node[ 2 ]; const nodeAttrs = node[ 3 ];

Run results for: Object vs array performance 2

Object

Array with constants

Array with inline numbers (post-minification)

Inline object

inline array