how to make a background sprite without using plist

cocos2d-x JavaScript
#1

i have 15 background images to make a sprite.
they are big images by 1280*720 so i don’t want to make them one image.
i have no idea using cc.SpriteFrameCache.getInstance().addSpriteFrames(.plist) without .plist file.
is it able to make plist file without merging one image ? for only using multiple files for sprite

#2

I don’t know much about spriteframecache nor plist, but you could use the Tiled tile map editor as is described here: http://www.cocos2d-x.org/docs/tutorial/parkour-game-with-javascript/chapter7/en