在 json 响应中有以下内容:
[
   "alt_sizes":[
      {"width":500,"height":333,"url":"http://..."},  
      {"width":400,"height":266,"url":"http://..."},
      {"width":250,"height":167,"url":"http://..."},
      {"width":100,"height":67,"url":"http://..."},
      {"width":75,"height":75,"url":"http://..."}
   ]
]
我用以下方式解析我的对象
obj.alt_sizes[0]
但是如果我想用 angular.js 获得具有特定宽度或高度的元素呢?选择小的,宽度为 75 ?