javascript - Is there a fixed format for json for using it in collapsible tree layout? -


i using d3.js visualizing data in collapsible tree layout.its working fine flare.json data seems have problems other json files work.my json file valid.

the error getting follows uncaught typeerror: cannot read property 'children' of undefined , json here

{ "name":"dummy", "children": [  {      "date": "20040309",     "name": "us",      "id": "27",     "kind": "s1",     "application_type": "not found",     "children": [         {"length": 27,             "type": "us",             "id": "28",             "kind": "s",             "name": "mewdows",             "date": "19730700",             "main_classification": "d 2907"         },         {"length": 27,             "type": "us",             "id": "29",             "kind": "s",             "name": "askew",             "date": "19731100",             "main_classification": "d 2907"         },         {"length": 27,             "type": "us",             "id": "30",             "kind": "s",             "name": "adams",             "date": "20020500",             "main_classification": "d 2969"         },         {"length": 27,             "type": "us",             "id": "31",             "kind": "s",             "name": "adams et al.",             "date": "20020500",             "main_classification": "d 2969"         },         {"length": 27,             "type": "us",             "id": "32",             "kind": "s",             "name": "adams",             "date": "20020800",             "main_classification": "d 2969"         },         {"length": 27,             "type": "us",             "id": "33",             "kind": "s",             "name": "adams",             "date": "20030700",             "main_classification": "d 2969"         },         {"length": 27,             "type": "us",             "id": "34",             "kind": "s",             "name": "robbins",             "date": "20031000",             "main_classification": "d 2969"         }     ],     "classification_national": "d 2969",     "length": 7 }, {      "date": "20040309",     "name": "us",     "id": "30997425",     "kind": "s1",     "application_type": "not found",     "children": [         {"length": 7,             "type": "us",             "id": "35",             "kind": "a",             "name": "alba et al.",             "date": "19851000",             "main_classification": "323308"         },         {"length": 7,             "type": "us",             "id": "36",             "kind": "a",             "name": "dobberstein",             "date": "19851000",             "main_classification": "323308"         }     ],     "classification_national": "d13110",     "length": 2 },  {      "date": "20040309",     "name": "us",     "id": "56992283",     "kind": "b2",     "application_type": "not found",     "children": [         { "length": 114,             "type": "us",             "id": "151",             "kind": "a",             "name": "demetre",             "date": "19770300",             "main_classification": "271183"         },         {"length": 114,             "type": "us",             "id": "152",             "kind": "a",             "name": "carstedt",             "date": "19771100",             "main_classification": "271183"         },         {"length": 114,             "type": "us",             "id": "153",             "kind": "b1",             "name": "teumer et al.",             "date": "20010100",             "main_classification": "271194"         },         {"length": 114,             "type": "de",             "id": "154",             "kind": "not found",             "name": "not found",             "date": "19751200",             "main_classification": "not found"         },         {"length": 114,             "type": "de",             "id": "155",             "kind": "not found",             "name": "not found",             "date": "19770100",             "main_classification": "not found"         },         {"length": 114,             "type": "de",             "id": "156",             "kind": "not found",             "name": "not found",             "date": "19800300",             "main_classification": "not found"         }     ],     "classification_national": "271276",     "length": 6 } ] }

any appreciated.


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