JavaScript通过递归合并JSON

通过递归合并JSON：

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79

function mergeJSON(o, n) {     let oType = Object.prototype.toString.call(o);     let nType = Object.prototype.toString.call(n);     if (nType == '[object Object]' && oType == '[object Object]') {         //合并属性(object)         for (let p in n) {             if (n.hasOwnProperty(p) && !o.hasOwnProperty(p)) {                 o[p] = n[p];             } else if (n.hasOwnProperty(p) && (o.hasOwnProperty(p))) {                 let oPType = Object.prototype.toString.call(o[p]);                 let nPType = Object.prototype.toString.call(n[p]);                 if ((nPType == '[object Object]' && oPType == '[object Object]') || (nPType == '[object Array]' && oPType == '[object Array]')) {                     mergeJSON(o[p], n[p]);                 } else {                     o[p] = n[p];                 }             }         }     } else if (nType == '[object Array]' && oType == '[object Array]') {         //合并属性(array)         for (let i in n) {             let oIType = Object.prototype.toString.call(o[i]);             let nIType = Object.prototype.toString.call(n[i]);             if ((nIType == '[object Object]' && oIType == '[object Object]') || (nIType == '[object Array]' && oIType == '[object Array]')) {                 mergeJSON(o[i], n[i]);             } else {                 o[i] = n[i];             }         }     }       //合并属性(other)     o = n; }   //test   let json1={     "a": "json1",     "b": 123,     "c": {         "dd": "json1 dd",         "ee": 556,         "f": "ff1"     },     "list": [         {             "a": 123,             "b": 96         },         {             "a": 45,             "b": 56         }     ] }; let json2={       "a": "json2",     "a2": 369,     "c": {         "dd2": "json2 dd",         "ee": "gg2"     },     "list": [         {             "a": "a1",             "b1": 69         },         369,         {             "i3": 36         }     ] };   mergeJSON(json1,json2);   console.log(JSON.stringify(json1));