通過json樹中的id查找節點

Question

我想將children數組添加到節點id = 52126f7d（或其他）。我該怎麼做？

var children = [ 
    { name: 'great-granchild3', 
    id: '2a12a10h' 
    }, 
    { name: 'great-granchild4', 
    id: 'bpme7qw0' 
    } 
] 

// json tree 
var objects = { 
    name: 'all objects', 
    id:"2e6ca1c3",  
    children: [ 
    { 
     name: 'child', 
     id: "6c03cfbe", 
     children: [     
      { name: 'grandchild1', 
       id: "2790f59c" 
      }, 
      { name: 'grandchild2', 
       id: "52126f7d" 
      }, 
      { name: 'grandchild3', 
       id: "b402f14b" 
      }, 
      { 
       name: 'grandchild4', 
       id: "6c03cff0", 
       children: [ 
       { name: 'great-grandchild1', 
        id: "ce90ffa6" 
       }, 
       { name: 'great-grandchild2', 
        id: "52f95f28" 
       } 
       ] 
      } 
     ] 
    },   
    { 
     name: 'child2', 
     id: "7693b310", 
     children: [ 
      { name: 'grandchild5', 
      id: "def86ecc" 
      }, 
      { name: 'grandchild6', 
      id: "6224a8f8" 
      } 
     ] 
    } 
] 
} 

與

var objects = { 
    name: 'all objects', 
    id:"2e6ca1c3",  
    children: [ 
    { 
     name: 'child', 
     id: "6c03cfbe", 
     children: [     
      { name: 'grandchild1', 
       id: "2790f59c" 
      }, 
      { name: 'grandchild2', 
       id: "52126f7d", 
       children = [ 
       { name: 'great-granchild3', 
        id: '2a12a10h' 
       }, 
       { name: 'great-granchild4', 
        id: 'bpme7qw0' 
       } 
       ] 
      }, 
      { name: 'grandchild3', 
       id: "b402f14b" 
      }, 
      { 
       name: 'grandchild4', 
       id: "6c03cff0", 
       children: [ 
       { name: 'great-grandchild1', 
        id: "ce90ffa6" 
       }, 
       { name: 'great-grandchild2', 
        id: "52f95f28" 
       } 
       ] 
      } 
     ] 
    },   
    { 
     name: 'child2', 
     id: "7693b310", 
     children: [ 
      { name: 'grandchild5', 
      id: "def86ecc" 
      }, 
      { name: 'grandchild6', 
      id: "6224a8f8" 
      } 
     ] 
    } 
] 
} 

Answer 1

首先找到適當的節點。

function getNodeById(id, node){ 
    var reduce = [].reduce; 
    function runner(result, node){ 
     if(result || !node) return result; 
     return node.id === id && node || //is this the proper node? 
      runner(null, node.children) || //process this nodes children 
      reduce.call(Object(node), runner, result); //maybe this is some ArrayLike Structure 
    } 
    return runner(null, node); 
} 

var target = getNodeById("52126f7d", objects); 
target.children = children; 

Answer 2

落得如何：

objects.children[0].children[1].children = children;