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    Interface NetworkInformation

    Provides information about the system’s current network connection, such as estimated bandwidth, round-trip time, and connection type. Also exposes events for monitoring changes to the network state.

    https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation

    interface NetworkInformation {
        downlink: number | undefined;
        effectiveType: NetworkInformationEffectiveType;
        rtt: number;
        saveData: boolean;
        type?: NetworkInformationType;
        addEventListener<K extends "change">(
            type: K,
            listener: (
                this: NetworkInformation,
                ev: NetworkInformationEventMap[K],
            ) => any,
            options?: boolean | AddEventListenerOptions,
        ): void;
        removeEventListener<K extends "change">(
            type: K,
            listener: (
                this: NetworkInformation,
                ev: NetworkInformationEventMap[K],
            ) => any,
            options?: boolean | EventListenerOptions,
        ): void;
    }

    Hierarchy

    • EventTarget
      • NetworkInformation
    Index
    downlink effectiveType rtt saveData type?
    addEventListener removeEventListener
    downlink: number | undefined

    Approximate downlink speed in megabits per second. Rounded to the nearest 25 kbps, based on recent throughput over active connections. May be undefined if no estimate is available.

    effectiveType: NetworkInformationEffectiveType

    A string describing the general quality of the connection (for example, "4g", "3g"). Determined from both downlink and latency estimates.

    rtt: number

    Estimated round-trip latency of the current connection in milliseconds, rounded to the nearest multiple of 25 ms.

    saveData: boolean

    Indicates whether the user has requested reduced data usage in the user agent’s settings.

    type?: NetworkInformationType

    Type of underlying network connection in use (for example, "wifi", "cellular"). May be omitted if unknown.

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