JSON字符串到多維陣列

Question

我似乎有一個問題轉換數組之間來回轉發PHP/JS之間。我正在使用JavaScript中的XmlHttpRequest到使用json_encode編碼多維（2D）數組的PHP頁面。

當接收到字符串時，我使用JSON.parse（）來解碼字符串，但它作爲一維數組返回。有沒有辦法將JSON字符串解析爲多維數組而不是單維？收到的JSON（從CSV文件）的

實施例：

[ 
    { 
     "rating": "0", 
     "title": "The Killing Kind", 
     "author": "John Connolly", 
     "type": "Book", 
     "asin": "0340771224", 
     "tags": "", 
     "review": "i still haven't had time to read this one..." 
    }, 
    { 
     "rating": "0", 
     "title": "The Third Secret", 
     "author": "Steve Berry", 
     "type": "Book", 
     "asin": "0340899263", 
     "tags": "", 
     "review": "need to find time to read this book" 
    }, 
    { 
     "rating": "3", 
     "title": "The Last Templar", 
     "author": "Raymond Khoury", 
     "type": "Book", 
     "asin": "0752880705", 
     "tags": "", 
     "review": "" 
    }, 
    { 
     "rating": "5", 
     "title": "The Traveller", 
     "author": "John Twelve Hawks", 
     "type": "Book", 
     "asin": "059305430X", 
     "tags": "", 
     "review": "" 
    }, 
    { 
     "rating": "4", 
     "title": "Crisis Four", 
     "author": "Andy Mcnab", 
     "type": "Book", 
     "asin": "0345428080", 
     "tags": "", 
     "review": "" 
    }, 
    { 
     "rating": "5", 
     "title": "Prey", 
     "author": "Michael Crichton", 
     "type": "Book", 
     "asin": "0007154534", 
     "tags": "", 
     "review": "" 
    }, 
    { 
     "rating": "3", 
     "title": "The Broker (Paperback)", 
     "author": "John Grisham", 
     "type": "Book", 
     "asin": "0440241588", 
     "tags": "book johngrisham", 
     "review": "good book, but is slow in the middle" 
    }, 
    { 
     "rating": "3", 
     "title": "Without Blood (Paperback)", 
     "author": "Alessandro Baricco", 
     "type": "Book", 
     "asin": "1841955744", 
     "tags": "", 
     "review": "" 
    }, 
    { 
     "rating": "5", 
     "title": "State of Fear (Paperback)", 
     "author": "Michael Crichton", 
     "type": "Book", 
     "asin": "0061015733", 
     "tags": "", 
     "review": "" 
    }, 
    { 
     "rating": "4", 
     "title": "The Rule of Four (Paperback)", 
     "author": "Ian Caldwell", 
     "type": "Book", 
     "asin": "0099451956", 
     "tags": "book bestseller", 
     "review": "" 
    }, 
    { 
     "rating": "4", 
     "title": "Deception Point (Paperback)", 
     "author": "Dan Brown", 
     "type": "Book", 
     "asin": "0671027387", 
     "tags": "book danbrown bestseller", 
     "review": "" 
    }, 
    { 
     "rating": "5", 
     "title": "Digital Fortress : A Thriller (Mass Market Paperback)", 
     "author": "Dan Brown", 
     "type": "Book", 
     "asin": "0312995423", 
     "tags": "book danbrown bestseller", 
     "review": "" 
    }, 
    { 
     "rating": "5", 
     "title": "Angels & Demons (Mass Market Paperback)", 
     "author": "Dan Brown", 
     "type": "Book", 
     "asin": "0671027360", 
     "tags": "book danbrown bestseller", 
     "review": "" 
    }, 
    { 
     "rating": "4", 
     "title": "The Da Vinci Code (Hardcover)", 
     "author": "Dan Brown", 
     "type": " Book ", 
     "asin": "0385504209", 
     "tags": "book movie danbrown bestseller davinci", 
     "review": "" 
    } 
] 

一旦解析，如果我嘗試使用myArr，該[0] [1]，它顯示爲未定義來訪問它。

原諒我，如果這是顯而易見的，我是新來的JS和JSON

Answer 1

編輯：你的編輯顯示您的實際JSON後：

您已經定義了JSON沒有定義二維數組，它定義了一個一維的對象數組。一旦反序列化，你會訪問（說）的第一本書，像這樣的標題：

alert(myArray[0].title); 

Live example（注意，在例子中，我不得不逃避你爲了給了JSON單引號把整個東西放在一個JavaScript字符串中;不要讓它拋出你，你的JSON文本是正確和有效的，正如你引用它，只是我把它放在一個用單引號分隔的字符串中，所以我必須逃脫其中的單引號）

---

原來的答覆：

JavaScript數組總是一維的，但數組中的每個本身可以是對數組的引用，這有效地用於二維數組。當正確編碼JSON與這些沒有問題：

[ 
    [1, 2, 3], 
    [4, 5, 6] 
] 

這是JSON對象具有兩個條目，每個條目的是三個條目的數組的數組。

var a, str, b; 

a = [ 
    [1, 2, 3], 
    [4, 5, 6] 
]; 
display("a.length = " + a.length); 
display("a[0] = " + a[0].join(",")); 
display("a[1] = " + a[1].join(",")); 
str = JSON.stringify(a); 
display("JSON string: " + str); 
b = JSON.parse(str); 
display("b.length = " + b.length); 
display("b[0] = " + b[0].join(",")); 
display("b[1] = " + b[1].join(",")); 

輸出：

a.length = 2 
a[0] = 1,2,3 
a[1] = 4,5,6 
JSON string: [[1,2,3],[4,5,6]] 
b.length = 2 
b[0] = 1,2,3 
b[1] = 4,5,6

Live copy

使用Crockford的JSON stringifier和解析器（以下語法現在也作爲ECMAScript5的標準，但不是所有的瀏覽器都有它尚未）

例