javascript - export json to xls doc in java/ js -

i'm trying export json data excel file. json not consistent why have problem because excel mapping scattered , columns messed up. here sample json i'm working on:

[ { "path": "/conte/nt", "title": "first", "date": "january 14, 2015 8:59:57 pm est" }, { "path": "/content/o", "title": "third annual", "date": "january 14, 2015 8:59:57 pm est" }, { "path": "/co/en", "title": "motivating factors", "date": "january 14, 2015 8:59:57 pm est"  },  { "path": "/con/ent", "title": "meeting", "description": "test", "date": "january 14, 2015 8:59:57 pm est", "key": "xyz, abc" } ]