Tizen Developers

You have use window events commone for HTML5.

Use this. Works for all Tizene phones:

    // Control app visibility.
    var hidden,visibilityChange;
    if (typeof document.hidden !== "undefined") {
    	hidden = "hidden";
    	visibilityChange = "visibilitychange";
    } else if (typeof document.webkitHidden !== "undefined") {
    	hidden = "webkitHidden";
    	visibilityChange = "webkitvisibilitychange";
    }
    
    function handleVisibilityChange(){
    	if (document[hidden]){
    			console.log("Page is now hidden.");
    			onAppBackground();
    	    } else {
    	    	console.log("Page is now visible.");
    	    	 onAppForeground();
    	    }
    	}
    document.addEventListener(visibilityChange, handleVisibilityChange, false);

Hi,

You may use the code snippet in the following link.

https://developer.tizen.org/ko/community/code-snippet/web-code-snippet/change-power-state-level-when-app-goes-backgroundforeground?tab=tags-all

Thanks.

Thank you!