Update MangaElt.js

[athalius]

This should fix merges #111
Trying to parse an array, that is already been parsed and instatntiated as an array is gonna blow up.

Test case:

{\"mirror\":\"Manga-Fox\",\"name\":\"1/2 Prince\",\"url\":\"http://mangafox.me/manga/1_2_prince/\",\"lastChapterReadURL\":\"http://mangafox.me/manga/1_2_prince/v14/c069/\",\"lastChapterReadName\":\"1/2 Prince 69\",\"read\":0,\"update\":1,\"ts\":1407828322,\"display\":0,\"cats\":\"[]\"},

[braiam]

That test case is invalid. The importData function is doing what's supposed to do. Can you change it for another where it demonstrate the problem?

[athalius]

Whoops got a bit lazy in snipping.

{"mangas":"[{\"mirror\":\"Manga-Fox\",\"name\":\"1/2 Prince\",\"url\":\"http://mangafox.me/manga/1_2_prince/\",\"lastChapterReadURL\":\"http://mangafox.me/manga/1_2_prince/v14/c069/\",\"lastChapterReadName\":\"1/2 Prince 69\",\"read\":0,\"update\":1,\"ts\":1407828322,\"display\":0,\"cats\":\"[]\"}]","bookmarks":"[]"}

is a valid string that will be read ( or will blow up at least :))

[braiam]

Um... it worked fine? What is the issue I'm supposed to see?

[stardisblue]

well, sometimes it triggers an error (unexpected en of input) because of JSON.parse(obj.cats) when cats is empty 'cause obj.cats is already a Json object ...

i fixed it locally by changing the MangaElt.js lines 122-124

    if (obj.cats !== undefined && obj.cats !== null) {
        this.cats = (typeof obj.cats ==='object')? obj.cats : JSON.parse(obj.cats) || [];
    }