Run results for: JSON.stringify vs structuredClone vs cloneDeep

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 7 months ago

Test name	Executions per second
JSON.stringify	17541.5 Ops/sec
structuredClone	22888.7 Ops/sec
cloneDeep	19516.4 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var MyObject = {
 "resultCount":20,
 "results": [
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"previewUrl":"https://audio-ssl.itunes.apple.com/itunes-assets/AudioPreview116/v4/b3/a4/38/b3a43862-aa28-2485-5f7a-13f92d575d38/mzaf_2507837793777754450.plus.aac.p.m4a", "artworkUrl30":"https://is1-ssl.mzstatic.com/image/thumb/Music/a0/9b/17/mzi.jwviikpw.jpg/30x30bb.jpg", "artworkUrl60":"https://is1-ssl.mzstatic.com/image/thumb/Music/a0/9b/17/mzi.jwviikpw.jpg/60x60bb.jpg", "artworkUrl100":"https://is1-ssl.mzstatic.com/image/thumb/Music/a0/9b/17/mzi.jwviikpw.jpg/100x100bb.jpg", "collectionPrice":10.99, "trackPrice":1.29, "releaseDate":"2006-10-16T07:00:00Z", "collectionExplicitness":"explicit", "trackExplicitness":"explicit", "discCount":1, "discNumber":1, "trackCount":19, "trackNumber":17, "trackTimeMillis":388226, "country":"USA", "currency":"USD", "primaryGenreName":"Hip-Hop/Rap", "contentAdvisoryRating":"Explicit", "isStreamable":true}, 
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{"wrapperType":"track", "kind":"song", "artistId":186775115, "collectionId":200682208, "trackId":200682889, "artistName":"Diddy", "collectionName":"Press Play", "trackName":"Tell Me (feat. Christina Aguilera)", "collectionCensoredName":"Press Play", "trackCensoredName":"Tell Me (feat. Christina Aguilera)", "artistViewUrl":"https://music.apple.com/us/artist/diddy/186775115?uo=4", "collectionViewUrl":"https://music.apple.com/us/album/tell-me-feat-christina-aguilera/200682208?i=200682889&uo=4", "trackViewUrl":"https://music.apple.com/us/album/tell-me-feat-christina-aguilera/200682208?i=200682889&uo=4", 
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{"wrapperType":"track", "kind":"song", "artistId":186775115, "collectionId":200919438, "trackId":200920153, "artistName":"Diddy featuring Keyshia Cole", "collectionName":"Press Play", "trackName":"Last Night (feat. Keyshia Cole)", "collectionCensoredName":"Press Play", "trackCensoredName":"Last Night (feat. Keyshia Cole)", "collectionArtistName":"Diddy", "artistViewUrl":"https://music.apple.com/us/artist/diddy/186775115?uo=4", "collectionViewUrl":"https://music.apple.com/us/album/last-night-feat-keyshia-cole/200919438?i=200920153&uo=4", "trackViewUrl":"https://music.apple.com/us/album/last-night-feat-keyshia-cole/200919438?i=200920153&uo=4", 
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{"wrapperType":"track", "kind":"song", "artistId":186775115, "collectionId":200682208, "trackId":200682819, "artistName":"Diddy", "collectionName":"Press Play", "trackName":"Come to Me (feat. Nicole Scherzinger)", "collectionCensoredName":"Press Play", "trackCensoredName":"Come to Me (feat. Nicole Scherzinger)", "artistViewUrl":"https://music.apple.com/us/artist/diddy/186775115?uo=4", "collectionViewUrl":"https://music.apple.com/us/album/come-to-me-feat-nicole-scherzinger/200682208?i=200682819&uo=4", "trackViewUrl":"https://music.apple.com/us/album/come-to-me-feat-nicole-scherzinger/200682208?i=200682819&uo=4", 
"previewUrl":"https://audio-ssl.itunes.apple.com/itunes-assets/AudioPreview126/v4/12/d3/11/12d3113c-ec3c-be94-2078-2ef0b32a3ddf/mzaf_7838896999931698054.plus.aac.p.m4a", "artworkUrl30":"https://is1-ssl.mzstatic.com/image/thumb/Music/a0/9b/17/mzi.jwviikpw.jpg/30x30bb.jpg", "artworkUrl60":"https://is1-ssl.mzstatic.com/image/thumb/Music/a0/9b/17/mzi.jwviikpw.jpg/60x60bb.jpg", "artworkUrl100":"https://is1-ssl.mzstatic.com/image/thumb/Music/a0/9b/17/mzi.jwviikpw.jpg/100x100bb.jpg", "collectionPrice":10.99, "trackPrice":1.29, "releaseDate":"2006-09-12T07:00:00Z", "collectionExplicitness":"explicit", "trackExplicitness":"explicit", "discCount":1, "discNumber":1, "trackCount":19, "trackNumber":6, "trackTimeMillis":276787, "country":"USA", "currency":"USD", "primaryGenreName":"Hip-Hop/Rap", "contentAdvisoryRating":"Explicit", "isStreamable":true}, 
{"wrapperType":"track", "kind":"song", "artistId":186775115, "collectionId":80969514, "trackId":80968905, "artistName":"Diddy", "collectionName":"Bad Boy's 10th Anniversary- The Hits", "trackName":"Victory 2004 (feat. The Notorious B.I.G., Busta Rhymes, 50 Cent & Lloyd Banks)", "collectionCensoredName":"Bad Boy's 10th Anniversary- The Hits", "trackCensoredName":"Victory 2004 (feat. The Notorious B.I.G., Busta Rhymes, 50 Cent & Lloyd Banks)", "collectionArtistId":36270, "collectionArtistName":"Various Artists", "artistViewUrl":"https://music.apple.com/us/artist/diddy/186775115?uo=4", "collectionViewUrl":"https://music.apple.com/us/album/victory-2004-feat-the-notorious-b-i-g-busta-rhymes-50/80969514?i=80968905&uo=4", "trackViewUrl":"https://music.apple.com/us/album/victory-2004-feat-the-notorious-b-i-g-busta-rhymes-50/80969514?i=80968905&uo=4", 
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{"wrapperType":"track", "kind":"song", "artistId":186775115, "collectionId":200919438, "trackId":200919509, "artistName":"Diddy featuring Nicole Scherzinger", "collectionName":"Press Play", "trackName":"Come to Me (feat. Nicole Scherzinger)", "collectionCensoredName":"Press Play", "trackCensoredName":"Come to Me (feat. Nicole Scherzinger)", "collectionArtistName":"Diddy", "artistViewUrl":"https://music.apple.com/us/artist/diddy/186775115?uo=4", "collectionViewUrl":"https://music.apple.com/us/album/come-to-me-feat-nicole-scherzinger/200919438?i=200919509&uo=4", "trackViewUrl":"https://music.apple.com/us/album/come-to-me-feat-nicole-scherzinger/200919438?i=200919509&uo=4", 
"previewUrl":"https://audio-ssl.itunes.apple.com/itunes-assets/AudioPreview125/v4/7a/44/06/7a4406ca-6e26-37ae-bb37-ae6fcf75dd72/mzaf_1094447645273661267.plus.aac.p.m4a", "artworkUrl30":"https://is1-ssl.mzstatic.com/image/thumb/Music124/v4/d7/93/3c/d7933cfa-40d9-fdb2-254d-44790920f171/mzi.lrcssjcl.jpg/30x30bb.jpg", "artworkUrl60":"https://is1-ssl.mzstatic.com/image/thumb/Music124/v4/d7/93/3c/d7933cfa-40d9-fdb2-254d-44790920f171/mzi.lrcssjcl.jpg/60x60bb.jpg", "artworkUrl100":"https://is1-ssl.mzstatic.com/image/thumb/Music124/v4/d7/93/3c/d7933cfa-40d9-fdb2-254d-44790920f171/mzi.lrcssjcl.jpg/100x100bb.jpg", "collectionPrice":10.99, "trackPrice":1.29, "releaseDate":"2006-10-16T12:00:00Z", "collectionExplicitness":"cleaned", "trackExplicitness":"cleaned", "discCount":1, "discNumber":1, "trackCount":19, "trackNumber":6, "trackTimeMillis":276800, "country":"USA", "currency":"USD", "primaryGenreName":"Hip-Hop/Rap", "contentAdvisoryRating":"Clean", "isStreamable":true}, 
{"wrapperType":"track", "kind":"song", "artistId":155449, "collectionId":906589010, "trackId":906589071, "artistName":"Puff Daddy", "collectionName":"No Way Out (2014 Remaster)", "trackName":"I'll Be Missing You (feat. Faith Evans & 112) [2014 Remaster]", "collectionCensoredName":"No Way Out (2014 Remaster)", "trackCensoredName":"I'll Be Missing You (feat. Faith Evans & 112) [2014 Remaster]", "collectionArtistId":78988879, "collectionArtistName":"Puff Daddy & The Family", "collectionArtistViewUrl":"https://music.apple.com/us/artist/puff-daddy-the-family/78988879?uo=4", "artistViewUrl":"https://music.apple.com/us/artist/puff-daddy/155449?uo=4", "collectionViewUrl":"https://music.apple.com/us/album/ill-be-missing-you-feat-faith-evans-112-2014-remaster/906589010?i=906589071&uo=4", "trackViewUrl":"https://music.apple.com/us/album/ill-be-missing-you-feat-faith-evans-112-2014-remaster/906589010?i=906589071&uo=4", 
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{"wrapperType":"track", "kind":"song", "artistId":155449, "collectionId":80981927, "trackId":80981504, "artistName":"Puff Daddy Featuring R. Kelly", "collectionName":"Forever", "trackName":"Satisfy You", "collectionCensoredName":"Forever", "trackCensoredName":"Satisfy You", "collectionArtistName":"Puff Daddy", "artistViewUrl":"https://music.apple.com/us/artist/puff-daddy/155449?uo=4", "collectionViewUrl":"https://music.apple.com/us/album/satisfy-you/80981927?i=80981504&uo=4", "trackViewUrl":"https://music.apple.com/us/album/satisfy-you/80981927?i=80981504&uo=4", 
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}


var myCopy = null;

Tests:

JSON.stringify
myCopy = JSON.parse(JSON.stringify(MyObject));
structuredClone
myCopy = structuredClone(MyObject);
cloneDeep
myCopy = _.cloneDeep(MyObject);