The first-time event means that the event will only be reported the first time it is triggered on the same device. Only registration event and custom events support this feature. rst in-app ad impression event

1. First-time register event

       Calling the trackFirstEvent function can report a first-time registration event. If the same firstCheckId is called multiple times, only the first call will take effect.

"properties" description

Code Example

let firstCheckId = "test_uniqueID";
let properties = {
		registerType:"WeChat",
		registerStatus:"success",
		customProperties:{
			test_key1:"1",
			test_key2:2,
		}
}
solarengine.trackFirstEvent(firstCheckId, "_appReg", properties)
// You can choose not to set customProperties.
// Please do not report custom properties starting with "_", otherwise SDK will abandon its value by default.

2. First-time custom event

Code Example

let firstCheckId = "test_uniqueID";
const customProperties = {
            test1: "key1",
            test2: 2,
            test3: [1, "2", { "keyxx": "xx" }],
}
solarengine.trackFirstEvent(firstCheckId, "test_Event", customProperties)
// You can choose not to set customProperties. 
// Please do not report custom properties starting with "_", otherwise SDK will abandon its value by default.