[英]recursive function to search in json object in javascript
我正在尝试用JavaScript编写递归函数,但无法正常工作。 我有一个对象数据的json数组,我想在其中基于键查找某些内容,然后再次基于搜索对象中的gotopage键查找。
像:查找橙色-> gotopage-> orange_store->查找-> orange_store-> gotopage-> yellow_store->查找,所以递归进行相同的过程。请帮我解决我的问题所在。
[
{
"id": 1,
"find": "orange",
"gotopage": "orange_store"
},
{
"id": 2,
"find": "orange_store",
"gotopage": "yellow_store"
},
{
"id": 3,
"find": "black_store",
"gotopage": "black_store"
},
{
"id": 4,
"find": "yellow_store",
"gotopage": "white_store"
},
{
"id": 5,
"find": "black_store",
"gotopage": "red_store"
}
]
function searchRec(search, myArray) {
for (var i = 0; i < myArray.length; i++) {
var res = [];
if (myArray[i].find == search) {
if (myArray[i] !== null) {
console.log(myArray[i]);
res = searchRec(myArray[i].gotopage, myArray);
if (res !== null) {
return res;
}
return myArray[i];
}
}
}
}
function findNode(arr) {
for (i = 0; i < arr.length; i++) {
searchRec(arr[i].find, arr);
break;
}
}
console.log(findNode(json));
第一次迭代的输出,但不适用于每次迭代:
Object {id: 1, find: "orange", gotopage: "orange_store"}
Object {id: 2, find: "orange_store", gotopage: "yellow_store"}
使用递归的另一个示例。 我做了一个简单的forEach()
来查找您要查找的内容,并将其存储在变量中,对其进行记录,然后使用我们新创建的值来调用该函数。 如果找不到任何内容,则返回null并结束。
const data = [ { "id": 1, "find": "orange", "gotopage": "orange_store" }, { "id": 2, "find": "orange_store", "gotopage": "yellow_store" }, { "id": 3, "find": "black_store", "gotopage": "black_store" }, { "id": 4, "find": "yellow_store", "gotopage": "white_store" }, { "id": 5, "find": "black_store", "gotopage": "red_store" } ]; function recursiveStore(search, myArray) { let obj = {} let newSearch; data.forEach(store => { if (search === store.find) { obj = store newSearch = store.gotopage } }) if (Object.keys(obj).length === 0) { return null } console.log(obj) recursiveStore(newSearch, myArray) } recursiveStore("orange", data)
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