通過多個JSON密鑰循環

Question

我試圖根據通過Wordpress返回的JSON數據創建一個類別數組。電流輸出是：

"property_categories_0_property_category":[ 
    "All" 
], 
"property_categories_1_property_category":[ 
    "Hospitality" 
], 
"property_categories_2_property_category":[ 
    "Retail" 
], 
"property_categories_3_property_category":[ 
    "Outdoor Advertising" 
], 
"property_categories":[ 
    "4" 
] 

我的JSON調用是：

$.ajax({ 
    url: '?json=1', 
    type: "POST", 
    success: function(data){ 
     var fields = data.page.custom_fields; 

     for (var i = 0; i < fields.property_categories[0]; i++) { 
     categories = fields.property_categories_ + i + _property_category[0]; 
     } 

    } 
}); 

我越來越因爲試圖內的串聯鍵值for循環的錯誤。

有什麼辦法可以達到這個目的嗎？

完整的JSON輸出：

{ 
status: "ok", 
page: { 
id: 90, 
type: "page", 
slug: "properties", 
url: "http://delcodev:8888/properties/", 
status: "publish", 
title: "Properties", 
title_plain: "Properties", 
content: "<div class="map"><div class="marker" data-property-selector="hospitality" data-lat="39.9312311" data-lng="-74.95873819999997"><a style="display:block;" href="http://delcodev:8888/properties/aloft-mount-laurel/">aloft Mount Laurel</a><p>Morbi risus augue, maximus eget pulvinar sed, laoreet ac nulla. Donec et nunc ac ex rhoncus suscipit vel eu orci. Proin nunc nulla, iaculis eget condimentum quis, tincidunt et nisi. In ultrices, massa nec mattis semper, massa odio vulputate ipsum, vitae sollicitudin urna nisl a ante. In hac habitasse platea dictumst. Cras finibus volutpat tortor, &hellip; <a href="http://delcodev:8888/properties/aloft-mount-laurel/" class="more-link">Continue reading <span class="screen-reader-text">aloft Mount Laurel</span></a></p></div><div class="marker" data-property-selector="outdoor advertising" data-lat="39.9195342" data-lng="-75.14346219999999"><a style="display:block;" href="http://delcodev:8888/properties/lowes/">Lowes South Philadelphia</a><p>Donec bibendum lacus urna, sit amet vehicula nibh imperdiet non. Sed consequat diam et odio molestie, sed faucibus orci fringilla. Proin suscipit sit amet felis mattis venenatis. Pellentesque sit amet feugiat metus. Duis id sapien egestas, eleifend est sagittis, egestas tortor. Pellentesque quis mi vitae augue sodales commodo. In nec efficitur ante. Pellentesque et pharetra &hellip; <a href="http://delcodev:8888/properties/lowes/" class="more-link">Continue reading <span class="screen-reader-text">Lowes South Philadelphia</span></a></p></div><div class="marker" data-property-selector="retail" data-lat="39.9699176" data-lng="-74.91403300000002"><a style="display:block;" href="http://delcodev:8888/properties/starbucks-mount-laurel/">Starbucks Mount Laurel</a><p>Sed dignissim justo vitae sem gravida, ac sodales justo suscipit. Sed pulvinar iaculis magna, eu viverra nunc eleifend in. Phasellus bibendum dui at metus rhoncus, ac molestie enim tincidunt. Vivamus placerat ut sem non dignissim. Proin molestie id magna at interdum. Donec venenatis metus sit amet hendrerit consectetur. Maecenas commodo urna venenatis varius aliquet. Nunc &hellip; <a href="http://delcodev:8888/properties/starbucks-mount-laurel/" class="more-link">Continue reading <span class="screen-reader-text">Starbucks Mount Laurel</span></a></p></div><div class="marker" data-property-selector="retail" data-lat="39.948684" data-lng="-75.160755"><a style="display:block;" href="http://delcodev:8888/properties/starbucks-center-city/">Starbucks Center City</a><p>Integer sed nibh sit amet urna tristique pretium eget at arcu. Nulla nec enim interdum, suscipit ipsum at, rutrum orci. Phasellus est nibh, euismod nec ex a, malesuada semper metus. Duis ut blandit lectus, ac ullamcorper tortor. Phasellus vel porta augue, id maximus est. Proin aliquet euismod lacus, ut vestibulum leo dictum nec. Cum sociis &hellip; <a href="http://delcodev:8888/properties/starbucks-center-city/" class="more-link">Continue reading <span class="screen-reader-text">Starbucks Center City</span></a></p></div></div> ", 
excerpt: "", 
date: "2015-11-19 18:57:45", 
modified: "2015-11-24 21:44:48", 
categories: [ ], 
tags: [ ], 
author: { 
id: 1, 
slug: "delcodev", 
name: "delcodev", 
first_name: "", 
last_name: "", 
nickname: "delcodev", 
url: "", 
description: "" 
}, 
comments: [ ], 
attachments: [ ], 
comment_count: 0, 
comment_status: "closed", 
custom_fields: { 
client_logo_grid_0_client_logo: [ 
"39" 
], 
client_logo_grid_1_client_logo: [ 
"38" 
], 
client_logo_grid_2_client_logo: [ 
"35" 
], 
client_logo_grid_3_client_logo: [ 
"39" 
], 
client_logo_grid_4_client_logo: [ 
"36" 
], 
client_logo_grid_5_client_logo: [ 
"34" 
], 
client_logo_grid: [ 
"6" 
], 
mp4_video: [ 
"14" 
], 
webm_video: [ 
"15" 
], 
video_poster: [ 
"16" 
], 
property_categories_0_property_category: [ 
"All" 
], 
property_categories_1_property_category: [ 
"Hospitality" 
], 
property_categories_2_property_category: [ 
"Retail" 
], 
property_categories_3_property_category: [ 
"Outdoor Advertising" 
], 
property_categories: [ 
"4" 
] 
} 
} 
} 

Answer 1

你不串聯任何鍵，你在這裏做的是一筆或連接字符串，其中fields.property_categories_是一個屬性，i是其他和_property_category[0]另外，你必須做在使用查找模板/括號標記，像這樣：

var fields = data.page.custom_fields; 

    for (var i = 0; i < fields.property_categories[0]; i++) { 
    categories = fields['property_categories_' + i + '_property_category'][0]; 
    } 

例如： obj[property_name]