Invite source code

/* Invite Friends */

			var base64Picture;
			var img = new Image();
			img.src = 'images/tiledbackground-sheet0.png';
			img.onload = function () {
				var canvas = document.createElement('canvas'), context = canvas.getContext('2d');
				canvas.width = img.width;
				canvas.height = img.height;
				context.drawImage(img, 0, 0, img.width, img.height);
				base64Picture=canvas.toDataURL('images/tiledbackground-sheet0.png');
			};



		  	FBInstant.context.chooseAsync().then(function() {
				FBInstant.updateAsync({
						action: 'CUSTOM',
						//cta: 'Join The Fight',
						image: base64Picture,
						text: 'X just invaded Y\'s village!',
						template: 'play_turn',
						data: { myReplayData: '...' },
						strategy: 'IMMEDIATE',
						notification: 'NO_PUSH',
				}).then(
						() =>{
								console.log('updateAsync() success!' + JSON.stringify(data));
								FBInstant.quit();
						},
						error => {
								console.error('updateAsync() ERROR! ' + JSON.stringify(error));
						}
				);

			});