Run results for: string interpolation vs direct access

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
string interpolation	605898.3 Ops/sec
direct access	1022428.2 Ops/sec

Script Preparation code:

var objectString = {
    "reportActions_1234": {
        action: "view",
        timestamp: "2024-07-17T10:15:30Z",
        user: "JohnDoe"
    },
    "reportActions_5678": {
        action: "edit",
        timestamp: "2024-07-17T11:20:45Z",
        user: "JaneSmith"
    },
    "reportActions_91011": {
        action: "delete",
        timestamp: "2024-07-17T12:25:50Z",
        user: "AlexJohnson"
    },
    "reportActions_1213": {
        action: "create",
        timestamp: "2024-07-17T13:30:55Z",
        user: "EmilyBrown"
    },
    "reportActions_1415": {
        action: "share",
        timestamp: "2024-07-17T14:35:00Z",
        user: "ChrisDavis"
    },
    "reportActions_1235": {
        action: "view",
        timestamp: "2024-07-17T10:15:30Z",
        user: "JohnDoe"
    },
    "reportActions_5679": {
        action: "edit",
        timestamp: "2024-07-17T11:20:45Z",
        user: "JaneSmith"
    },
    "reportActions_91021": {
        action: "delete",
        timestamp: "2024-07-17T12:25:50Z",
        user: "AlexJohnson"
    },
    "reportActions_1214": {
        action: "create",
        timestamp: "2024-07-17T13:30:55Z",
        user: "EmilyBrown"
    },
    "reportActions_1416": {
        action: "share",
        timestamp: "2024-07-17T14:35:00Z",
        user: "ChrisDavis"
    },
    "report_1234": {
        action: "view",
        timestamp: "2024-07-17T10:15:30Z",
        user: "JohnDoe"
    },
    "report_5678": {
        action: "edit",
        timestamp: "2024-07-17T11:20:45Z",
        user: "JaneSmith"
    },
    "report_91011": {
        action: "delete",
        timestamp: "2024-07-17T12:25:50Z",
        user: "AlexJohnson"
    },
    "report_1213": {
        action: "create",
        timestamp: "2024-07-17T13:30:55Z",
        user: "EmilyBrown"
    },
    "report_1415": {
        action: "share",
        timestamp: "2024-07-17T14:35:00Z",
        user: "ChrisDavis"
    },
    "report_1235": {
        action: "view",
        timestamp: "2024-07-17T10:15:30Z",
        user: "JohnDoe"
    },
    "report_5679": {
        action: "edit",
        timestamp: "2024-07-17T11:20:45Z",
        user: "JaneSmith"
    },
    "report_91021": {
        action: "delete",
        timestamp: "2024-07-17T12:25:50Z",
        user: "AlexJohnson"
    },
    "report_1214": {
        action: "create",
        timestamp: "2024-07-17T13:30:55Z",
        user: "EmilyBrown"
    },
    "report_1416": {
        action: "share",
        timestamp: "2024-07-17T14:35:00Z",
        user: "ChrisDavis"
    }
};

var objectStandar = {
    "reportActions_": {
        "123": {
            "name": "Action 1",
            "description": "Description for action 1",
            "completed": true
        },
        "234": {
            "name": "Action 2",
            "description": "Description for action 2",
            "completed": false
        },
        "1232": {
            "name": "Action 1",
            "description": "Description for action 1",
            "completed": true
        },
        "2343": {
            "name": "Action 2",
            "description": "Description for action 2",
            "completed": false
        },
        "1234": {
            "name": "Action 1",
            "description": "Description for action 1",
            "completed": true
        },
        "2345": {
            "name": "Action 2",
            "description": "Description for action 2",
            "completed": false
        },
        "1236": {
            "name": "Action 1",
            "description": "Description for action 1",
            "completed": true
        },
        "2347": {
            "name": "Action 2",
            "description": "Description for action 2",
            "completed": false
        },
        "1238": {
            "name": "Action 1",
            "description": "Description for action 1",
            "completed": true
        },
        "2349": {
            "name": "Action 2",
            "description": "Description for action 2",
            "completed": false
        }
    },
    "reports_": {
        "3331": {
            "title": "Report 1",
            "summary": "Summary of report 1",
            "approved": true
        },
        "4442": {
            "title": "Report 2",
            "summary": "Summary of report 2",
            "approved": false
        },
        "3333": {
            "title": "Report 1",
            "summary": "Summary of report 1",
            "approved": true
        },
        "4444": {
            "title": "Report 2",
            "summary": "Summary of report 2",
            "approved": false
        },
        "3335": {
            "title": "Report 1",
            "summary": "Summary of report 1",
            "approved": true
        },
        "444": {
            "title": "Report 2",
            "summary": "Summary of report 2",
            "approved": false
        },
        "3336": {
            "title": "Report 1",
            "summary": "Summary of report 1",
            "approved": true
        },
        "4447": {
            "title": "Report 2",
            "summary": "Summary of report 2",
            "approved": false
        },
        "3338": {
            "title": "Report 1",
            "summary": "Summary of report 1",
            "approved": true
        },
        "4449": {
            "title": "Report 2",
            "summary": "Summary of report 2",
            "approved": false
        }
    }
};

Tests:

string interpolation
const reportActionIds = [ "1234", "5678", "91011", "1213", "1415", "1235", "5679", "91021", "1214", "1416" ]; const reportIds = [ "1234", "5678", "91011", "1213", "1415", "1235", "5679", "91021", "1214", "1416" ]; for (let i of reportActionIds) { objectString[`reportActions_${i}`]; } for (let i of reportIds) { objectString[`report_${i}`]; }
direct access
const reportActionIds = [ "123", "234", "1232", "2343", "1234", "2345", "1236", "2347", "1238", "2349" ]; const reportIds = [ "3331", "4442", "3333", "4444", "3335", "444", "3336", "4447", "3338", "4449" ]; for (let i of reportActionIds) { objectStandar["reportActions_"][i]; } for (let i of reportIds) { objectStandar["reports_"][i]; }