Run results for: Large Object cloning

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36

Browser: Chrome 112

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Lodash cloneDeep	2941.1 Ops/sec
Native JSON parse	4170.4 Ops/sec
Recursive deep clone	3451.7 Ops/sec
Object.assign shallow clone	0.0 Ops/sec
structuredClone	3954.3 Ops/sec

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                "title": "Remaining",
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            "anyCardsHint": {
                "title": "Sort Any Amount (cards) Hint",
                "label": "Any amount of cards can be sorted",
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            "anyCatsHint": {
                "title": "Use Any Amount (categories) Hint:",
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            "allCatsHint": {
                "title": "Use All Categories Hint",
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            "cardDropInstruction": {
                "header": "Help, Instructions and Headers",
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                "label": "Please, drop your cards here",
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            "newCategoryOnCardDropInstruction": {
                "title": "New Category On Drop Instruction",
                "label": "New categories will be created automatically for each card dropped outside of existing category.",
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            "cardListHeader": {
                "title": "Card List Header",
                "label": "Card List",
                "longText": false
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            "categoryListHeader": {
                "title": "Category List Header",
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            "popupGeneralTitle": {
                "header": "Notifications and Popup Messages",
                "title": "General Popup Title",
                "label": "Information",
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            "savedMessageNotifier": {
                "title": "Saved Message Notification",
                "label": "Your card sorting answer was saved successfully.",
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            "cantAddCategoryPopup": {
                "title": "Cannot Add Category Popup",
                "label": "Max limit of categories used is already reached",
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            "cantDeleteNonEmptyCategoryPopup": {
                "title": "Cannot Delete Non-Empty Category Popup",
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            "errorSavingDataTitle": {
                "title": "Error Saving Data Popup Title",
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            "errorSavingDataPopup": {
                "title": "Error Saving Data Popup Message",
                "label": "An error Occurred while saving card sorting data.",
                "longText": true
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            "addNewCategoryBtn": {
                "header": "Button Labels",
                "title": "Add New Category Button",
                "label": "Add New Category",
                "longText": false
            },
            "deleteAllCategoriesBtn": {
                "title": "Delete All Categories Button",
                "label": "Delete All Categories",
                "longText": false
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            "deleteCategoryBtn": {
                "title": "Delete Category Button",
                "label": "Delete this category",
                "longText": false
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            "resetCategoriesBtn": {
                "title": "Reset Button",
                "label": "Reset",
                "longText": false
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            "validateSortMoreCards": {
                "header": "Sorting Validation Feedback",
                "title": "Sort More Cards Feedback",
                "label": "Minimum sorted cards not met. Please sort more cards.",
                "longText": true
            },
            "validateUseMoreCats": {
                "title": "Use More Categories Feedback",
                "label": "Minimum used categories not met. Please use more categories.",
                "longText": true
            },
            "validateCardsOutside": {
                "title": "Cards Sorted Outside of Categories Feedback",
                "label": "One or more cards were placed outside of categories. Please sort them to categories.",
                "longText": true
            },
            "validateEmptyCats": {
                "title": "Empty Categories Feedback",
                "label": "One or more categories are empty. Please add cards to, or remove the empty categories",
                "longText": true
            },
            "validateEmptyCatName": {
                "title": "Empty Category Name Feedback",
                "label": "One or more categories have an empty name. Please enter a name for all categories.",
                "longText": true
            },
            "categoryPlaceholder": {
                "title": "New Category Label Placeholder",
                "label": "Enter a label",
                "longText": false
            },
            "emptyCategoryLabel": {
                "title": "Empty Category Label Error Feedback",
                "label": "Label should not be empty",
                "longText": false
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        },
        "defaultCardCatLabels": {
            "cardLabel": {
                "title": "Card Label Singular",
                "label": "card"
            },
            "cardLabelPlural": {
                "title": "Card Label Plural",
                "label": "cards"
            },
            "catLabel": {
                "title": "Category Label Singular",
                "label": "category"
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            "catLabelPlural": {
                "title": "Category Label Plural",
                "label": "categories"
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        },
        "dimOneItemLabels": {
            "2": {
                "singular": "List Option",
                "plural": "List Options"
            },
            "3": {
                "singular": "List Option",
                "plural": "List Options"
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            "4": {
                "singular": "List Option",
                "plural": "List Options"
            },
            "5": {
                "singular": "List Option",
                "plural": "List Options"
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            "6": {
                "singular": "Row",
                "plural": "Rows"
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            "7": {
                "singular": "Row",
                "plural": "Rows"
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            "8": {
                "singular": "Row",
                "plural": "Rows"
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            "9": {
                "singular": "Row",
                "plural": "Rows"
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            "10": {
                "singular": "Row",
                "plural": "Rows"
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            "11": {
                "singular": "Row",
                "plural": "Rows"
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            "12": {
                "singular": "Row",
                "plural": "Rows"
            },
            "13": {
                "singular": "Row",
                "plural": "Rows"
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            "14": {
                "singular": "Row",
                "plural": "Rows"
            },
            "20": {
                "singular": "Row",
                "plural": "Rows"
            },
            "21": {
                "singular": "Item for ranking",
                "plural": "Items for ranking"
            },
            "27": {
                "singular": "Row",
                "plural": "Rows"
            },
            "28": {
                "singular": "Checkbox",
                "plural": "Checkboxes"
            },
            "29": {
                "singular": "Row",
                "plural": "Rows"
            },
            "31": {
                "singular": "Row",
                "plural": "Rows"
            },
            "32": {
                "singular": "Card",
                "plural": "Cards"
            }
        },
        "dimTwoItemLabels": {
            "6": {
                "singular": "Column",
                "plural": "Columns"
            },
            "10": {
                "singular": "Column",
                "plural": "Columns"
            },
            "11": {
                "singular": "Column",
                "plural": "Columns"
            },
            "13": {
                "singular": "Column",
                "plural": "Columns"
            },
            "14": {
                "singular": "Scale 1 Option",
                "plural": "Scale 1 Options"
            },
            "30": {
                "singular": "Rating",
                "plural": "Ratings"
            },
            "31": {
                "singular": "Rating",
                "plural": "Ratings"
            },
            "32": {
                "singular": "Category",
                "plural": "Categories"
            }
        },
        "dimThreeItemLabels": {
            "14": {
                "singular": "Scale 2 Option",
                "plural": "Scale 2 Options"
            }
        },
        "questionTypeDefs": {
            "2": {
                "label": "<span class=\"lsq-adder__drop-link far fa-caret-square-down\"></span> Dropdown List",
                "name": "ListDropdown",
                "order": 6
            },
            "4": {
                "label": "<span class=\"lsq-adder__drop-link far fa-dot-circle\"></span> Multiple Choice",
                "name": "List",
                "order": 0
            },
            "6": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-th\"></span> Multiple Choice Grid",
                "name": "Array",
                "order": 3
            },
            "15": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-calendar-day\"></span> Date/Time",
                "name": "Date",
                "order": 13
            },
            "17": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-upload\"></span> File Upload",
                "name": "File",
                "order": 14
            },
            "19": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-calculator\"></span> Numerical Input",
                "name": "NumInput",
                "order": 12
            },
            "21": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-random\"></span> Ranking",
                "name": "Ranking",
                "order": 7
            },
            "22": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-info-circle\"></span> Text Display",
                "name": "TextDisplay",
                "order": 17
            },
            "23": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-thumbs-up\"></span> Yes/No",
                "name": "YesNo",
                "order": 15
            },
            "24": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-i-cursor\"></span> Short Answer",
                "name": "ShortText",
                "order": 9
            },
            "25": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-align-left\"></span> Paragraph",
                "name": "LongText",
                "order": 10
            },
            "27": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-list\"></span> Short Answer Form",
                "name": "MultiShortText",
                "order": 11
            },
            "28": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-check-square\"></span> Checkboxes",
                "name": "MultiChoice",
                "order": 1
            },
            "30": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-sort-numeric-down\"></span> Rating Scale",
                "name": "RatingScale",
                "order": 2
            },
            "31": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-th\"></span> Rating Scale Grid",
                "name": "ArrayRating",
                "order": 4
            },
            "32": {
                "label": "<span class=\"lsq-adder__drop-link far fa-clone\"></span> Card Sort",
                "name": "CardSort",
                "order": 8
            },
            "34": {
                "label": "<span class=\"lsq-adder__drop-link fas fa-filter\"></span> Complex Quota",
                "name": "ComplexQuota",
                "order": 16
            }
        },
        "inTaskTextLocStates": {
            "static": {
                "id": "static",
                "markup": "Locked to Bottom"
            },
            "bl": {
                "id": "bl",
                "markup": "Bottom Left Corner"
            },
            "bc": {
                "id": "bc",
                "markup": "Bottom Center"
            },
            "br": {
                "id": "br",
                "markup": "Bottom Right Corner"
            },
            "ml": {
                "id": "ml",
                "markup": "Middle Left"
            },
            "mc": {
                "id": "mc",
                "markup": "Centered"
            },
            "mr": {
                "id": "mr",
                "markup": "Middle Right"
            },
            "tl": {
                "id": "tl",
                "markup": "Top Left Corner"
            },
            "tc": {
                "id": "tc",
                "markup": "Top Center"
            },
            "tr": {
                "id": "tr",
                "markup": "Top Right Corner"
            }
        },
        "activeEditEntity": null,
        "activeEditedTreeStructures": [],
        "activeEditTreeStructuresBackup": [],
        "activeEditEntityBackups": {},
        "activeEditFilterBackups": {
            "questionFilters": null,
            "groupFilters": null,
            "conditionFilters": null,
            "taskFilters": null
        },
        "activeEditEntityLinkBackups": null,
        "editLogTemplate": {
            "entities": {},
            "filterCopies": {
                "questionFilters": {
                    "edited": {
                        "filters": {},
                        "displayStrings": {},
                        "enabled": {}
                    },
                    "original": {
                        "filters": {},
                        "displayStrings": {},
                        "enabled": {}
                    }
                },
                "taskFilters": {
                    "edited": {
                        "filters": {},
                        "displayStrings": {},
                        "enabled": {}
                    },
                    "original": {
                        "filters": {},
                        "displayStrings": {},
                        "enabled": {}
                    }
                },
                "groupFilters": {
                    "edited": {
                        "filters": {},
                        "displayStrings": {},
                        "enabled": {}
                    },
                    "original": {
                        "filters": {},
                        "displayStrings": {},
                        "enabled": {}
                    }
                },
                "conditionFilters": {
                    "edited": {
                        "filters": {},
                        "displayStrings": {},
                        "conditionAssignments": {}
                    },
                    "original": {
                        "filters": {},
                        "displayStrings": {},
                        "conditionAssignments": {}
                    }
                }
            },
            "studySettings": {}
        },
        "studyNeedsBuild": false
    },
    "draftUpdatedAt": "2023-06-21 15:45:52"
};

var testCopy = null;

var deepClone = function(obj) {
    var out;
    if (Array.isArray(obj)) {
        out = [];
        for (var index = 0; index < obj.length; ++index) {
            let subArray = obj[index];
            out.push((subArray === null) ? subArray : (subArray instanceof Date) ? new Date(subArray.valueOf()) : (typeof subArray === 'object') ? deepClone(subArray) : subArray);
        }
    } else {
        out = {};
        for (var key in obj) {
            var subObject = obj[key];
            out[key] = subObject === null ? subObject : subObject instanceof Date ? new Date(subObject.valueOf()) : (typeof subObject === 'object') ? deepClone(subObject) : subObject;


        }
    }
    return out;
};

Tests:

Lodash cloneDeep
testCopy = _.cloneDeep(testArray);
Native JSON parse
testCopy = JSON.parse(JSON.stringify(testArray));
Recursive deep clone
testCopy = deepClone(testArray);
Object.assign shallow clone
testCopy = Object.assign([...testArray]);
structuredClone
testCopy = structuredClone(testArray);

Run results for: Large Object cloning

compare array copy/clone methods sdfewfe

Lodash cloneDeep

Native JSON parse

Recursive deep clone

Object.assign shallow clone

structuredClone