SharePoint lists REST read from CORDOVA app

Hi all,

I was hoping somebody could help me work this one out or recommend an alternative. 
I have a SharePoint online site with a list of data. I also have built a Cordova app, with a HTML page, and in JavaScript i am trying to connect to the SharePoint online lists via REST, using a simple call that i know works from within a SP online page.

function getAssets(){
	var ListName = "Assets";
	var ListUrl = "_api/Web/Lists/GetByTitle('" + ListName + "')/Items";
	var FilterUrl = "?$select=Title";
		$.ajax({
			async: false,
			url: SiteURL  + ListUrl + FilterUrl,
			type: "GET",
			headers: {"accept": "application/json;odata=verbose",
			},
			success: function (assetData) {
				var assetCount = assetData.d.results.length;	
				for (i = 0; i < assetCount; i++) { 
					var assetName = assetData.d.results[i].Title;
					// Add each asset to an array
					ssetArray.push(assetName);
				};
			},
			error: function(error){alert(JSON.stringify(error));}
		});
};

Unfortunately i get an error in the console:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://mySPONLINEsite.sharepoint.com/sites/Assets_api/Web/Lists/GetByTitle('Assets')/Items?$select=Title. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

I assume this is because my Cordova is http and SP online is https? i usually do all of my development within SharePoint so i haven't faced a cross origin issue before. from some googling I've found ways to fix this for an onpremise SharePoint by editing config in IIS but obviously i cant do this with SharePoint online. 

Any help or advice on alternative ways to connect to SharePoint lists, or even alternative cloud tables i could use to store the data is very much appreciated!