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AddEventListener

addEventListener() is a common BrightSign method that is used to listen for an event.

Syntax:

target.addEventListener(type, listener);

• type string: Specifies the type of event to listen for

• listener function: The object to be notified when the event (of the specified type) happens 

RemoveEventListener

removeEventListener()is a common BrightSign method that is used to remove an event listener.

checkPassword()

getDigestHash()

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Syntax:

target.removeEventListener(type, listener);

• type string: Specifies the type of event to listen for

• listener function:  The object to be notified when the event (of the specified type) happens 

Example

function GPIOcontrolDown(msg){

    console.log(JSON.stringify(msg)); 
    console.log(" GPIO : " + msg.detail)
}

// to add an event listener for the "controldown" GPIO event

control_port.addEventListener("controldown", GPIOcontrolDown);

// to remove the "controldown" GPIO event listener

control_port.removeEventListener("controldown", GPIOcontrolDown);