我有美国所有50个州的JSON对象及其相关信息。我想使用console.log循环迭代每个名称和for名称。
JSON将所有状态对象存储在一个大对象中，我不知道如何访问状态对象，因为它们位于自己的对象中。
const jsonobject = {
"AL": {
"name": "Alabama",
"capital": "Montgomery",
"lat": "32.361538",
"long": "-86.279118"
},
"AK": {
"name": "Alaska",
"capital": "Juneau",
"lat": "58.301935",
"long": "-134.419740"
},
"AZ": {
"name": "Arizona",
"capital": "Phoenix",
"lat": "33.448457",
"long": "-112.073844"
},
"AR": {
"name": "Arkansas",
"capital": "Little Rock",
"lat": "34.736009",
"long": "-92.331122"
},
"CA": {
"name": "California",
"capital": "Sacramento",
"lat": "38.555605",
"long": "-121.468926"
},
"CO": {
"name": "Colorado",
"capital": "Denver",
"lat": "39.7391667",
"long": "-104.984167"
},
"CT": {
"name": "Connecticut",
"capital": "Hartford",
"lat": "41.767",
"long": "-72.677"
},
"DE": {
"name": "Delaware",
"capital": "Dover",
"lat": "39.161921",
"long": "-75.526755"
},
"FL": {
"name": "Florida",
"capital": "Tallahassee",
"lat": "30.4518",
"long": "-84.27277"
},
"GA": {
"name": "Georgia",
"capital": "Atlanta",
"lat": "33.76",
"long": "-84.39"
},
"HI": {
"name": "Hawaii",
"capital": "Honolulu",
"lat": "21.30895",
"long": "-157.826182"
},
"ID": {
"name": "Idaho",
"capital": "Boise",
"lat": "43.613739",
"long": "-116.237651"
},
"IL": {
"name": "Illinois",
"capital": "Springfield",
"lat": "39.783250",
"long": "-89.650373"
},
"IN": {
"name": "Indiana",
"capital": "Indianapolis",
"lat": "39.790942",
"long": "-86.147685"
},
"IA": {
"name": "Iowa",
"capital": "Des Moines",
"lat": "41.590939",
"long": "-93.620866"
},
"KS": {
"name": "Kansas",
"capital": "Topeka",
"lat": "39.04",
"long": "-95.69"
},
"KY": {
"name": "Kentucky",
"capital": "Frankfort",
"lat": "38.197274",
"long": "-84.86311"
},
"LA": {
"name": "Louisiana",
"capital": "Baton Rouge",
"lat": "30.45809",
"long": "-91.140229"
},
"ME": {
"name": "Maine",
"capital": "Augusta",
"lat": "44.323535",
"long": "-69.765261"
},
"MD": {
"name": "Maryland",
"capital": "Annapolis",
"lat": "38.972945",
"long": "-76.501157"
},
"MA": {
"name": "Massachusetts",
"capital": "Boston",
"lat": "42.2352",
"long": "-71.0275"
},
"MI": {
"name": "Michigan",
"capital": "Lansing",
"lat": "42.7335",
"long": "-84.5467"
},
"MN": {
"name": "Minnesota",
"capital": "Saint Paul",
"lat": "44.95",
"long": "-93.094"
},
"MS": {
"name": "Mississippi",
"capital": "Jackson",
"lat": "32.320",
"long": "-90.207"
},
"MO": {
"name": "Missouri",
"capital": "Jefferson City",
"lat": "38.572954",
"long": "-92.189283"
},
"MT": {
"name": "Montana",
"capital": "Helana",
"lat": "46.595805",
"long": "-112.027031"
},
"NE": {
"name": "Nebraska",
"capital": "Lincoln",
"lat": "40.809868",
"long": "-96.675345"
},
"NV": {
"name": "Nevada",
"capital": "Carson City",
"lat": "39.160949",
"long": "-119.753877"
},
"NH": {
"name": "New Hampshire",
"capital": "Concord",
"lat": "43.220093",
"long": "-71.549127"
},
"NJ": {
"name": "New Jersey",
"capital": "Trenton",
"lat": "40.221741",
"long": "-74.756138"
},
"NM": {
"name": "New Mexico",
"capital": "Santa Fe",
"lat": "35.667231",
"long": "-105.964575"
},
"NY": {
"name": "New York",
"capital": "Albany",
"lat": "42.659829",
"long": "-73.781339"
},
"NC": {
"name": "North Carolina",
"capital": "Raleigh",
"lat": "35.771",
"long": "-78.638"
},
"ND": {
"name": "North Dakota",
"capital": "Bismarck",
"lat": "48.813343",
"long": "-100.779004"
},
"OH": {
"name": "Ohio",
"capital": "Columbus",
"lat": "39.962245",
"long": "-83.000647"
},
"OK": {
"name": "Oklahoma",
"capital": "Oklahoma City",
"lat": "35.482309",
"long": "-97.534994"
},
"OR": {
"name": "Oregon",
"capital": "Salem",
"lat": "44.931109",
"long": "-123.029159"
},
"PA": {
"name": "Pennsylvania",
"capital": "Harrisburg",
"lat": "40.269789",
"long": "-76.875613"
},
"RI": {
"name": "Rhode Island",
"capital": "Providence",
"lat": "41.82355",
"long": "-71.422132"
},
"SC": {
"name": "South Carolina",
"capital": "Columbia",
"lat": "34.000",
"long": "-81.035"
},
"SD": {
"name": "South Dakota",
"capital": "Pierre",
"lat": "44.367966",
"long": "-100.336378"
},
"TN": {
"name": "Tennessee",
"capital": "Nashville",
"lat": "36.165",
"long": "-86.784"
},
"TX": {
"name": "Texas",
"capital": "Austin",
"lat": "30.266667",
"long": "-97.75"
},
"UT": {
"name": "Utah",
"capital": "Salt Lake City",
"lat": "40.7547",
"long": "-111.892622"
},
"VT": {
"name": "Vermont",
"capital": "Montpelier",
"lat": "44.26639",
"long": "-72.57194"
},
"VA": {
"name": "Virginia",
"capital": "Richmond",
"lat": "37.54",
"long": "-77.46"
},
"WA": {
"name": "Washington",
"capital": "Olympia",
"lat": "47.042418",
"long": "-122.893077"
},
"WV": {
"name": "West Virginia",
"capital": "Charleston",
"lat": "38.349497",
"long": "-81.633294"
},
"WI": {
"name": "Wisconsin",
"capital": "Madison",
"lat": "43.074722",
"long": "-89.384444"
},
"WY": {
"name": "Wyoming",
"capital": "Cheyenne",
"lat": "41.145548",
"long": "-104.802042"
}
}
const jsonarray = [];
jsonarray.push(jsonobject);
for (i=0; i < jsonarray.length; i++) {
console.log(jsonarray[i].name);
}
答案 0 :(得分：1)
const jsonobject = {
"AL": {
"name": "Alabama",
"capital": "Montgomery",
"lat": "32.361538",
"long": "-86.279118"
},
"AK": {
"name": "Alaska",
"capital": "Juneau",
"lat": "58.301935",
"long": "-134.419740"
},
"AZ": {
"name": "Arizona",
"capital": "Phoenix",
"lat": "33.448457",
"long": "-112.073844"
},
"AR": {
"name": "Arkansas",
"capital": "Little Rock",
"lat": "34.736009",
"long": "-92.331122"
},
"CA": {
"name": "California",
"capital": "Sacramento",
"lat": "38.555605",
"long": "-121.468926"
},
"CO": {
"name": "Colorado",
"capital": "Denver",
"lat": "39.7391667",
"long": "-104.984167"
},
"CT": {
"name": "Connecticut",
"capital": "Hartford",
"lat": "41.767",
"long": "-72.677"
},
"DE": {
"name": "Delaware",
"capital": "Dover",
"lat": "39.161921",
"long": "-75.526755"
},
"FL": {
"name": "Florida",
"capital": "Tallahassee",
"lat": "30.4518",
"long": "-84.27277"
},
"GA": {
"name": "Georgia",
"capital": "Atlanta",
"lat": "33.76",
"long": "-84.39"
},
"HI": {
"name": "Hawaii",
"capital": "Honolulu",
"lat": "21.30895",
"long": "-157.826182"
},
"ID": {
"name": "Idaho",
"capital": "Boise",
"lat": "43.613739",
"long": "-116.237651"
},
"IL": {
"name": "Illinois",
"capital": "Springfield",
"lat": "39.783250",
"long": "-89.650373"
},
"IN": {
"name": "Indiana",
"capital": "Indianapolis",
"lat": "39.790942",
"long": "-86.147685"
},
"IA": {
"name": "Iowa",
"capital": "Des Moines",
"lat": "41.590939",
"long": "-93.620866"
},
"KS": {
"name": "Kansas",
"capital": "Topeka",
"lat": "39.04",
"long": "-95.69"
},
"KY": {
"name": "Kentucky",
"capital": "Frankfort",
"lat": "38.197274",
"long": "-84.86311"
},
"LA": {
"name": "Louisiana",
"capital": "Baton Rouge",
"lat": "30.45809",
"long": "-91.140229"
},
"ME": {
"name": "Maine",
"capital": "Augusta",
"lat": "44.323535",
"long": "-69.765261"
},
"MD": {
"name": "Maryland",
"capital": "Annapolis",
"lat": "38.972945",
"long": "-76.501157"
},
"MA": {
"name": "Massachusetts",
"capital": "Boston",
"lat": "42.2352",
"long": "-71.0275"
},
"MI": {
"name": "Michigan",
"capital": "Lansing",
"lat": "42.7335",
"long": "-84.5467"
},
"MN": {
"name": "Minnesota",
"capital": "Saint Paul",
"lat": "44.95",
"long": "-93.094"
},
"MS": {
"name": "Mississippi",
"capital": "Jackson",
"lat": "32.320",
"long": "-90.207"
},
"MO": {
"name": "Missouri",
"capital": "Jefferson City",
"lat": "38.572954",
"long": "-92.189283"
},
"MT": {
"name": "Montana",
"capital": "Helana",
"lat": "46.595805",
"long": "-112.027031"
},
"NE": {
"name": "Nebraska",
"capital": "Lincoln",
"lat": "40.809868",
"long": "-96.675345"
},
"NV": {
"name": "Nevada",
"capital": "Carson City",
"lat": "39.160949",
"long": "-119.753877"
},
"NH": {
"name": "New Hampshire",
"capital": "Concord",
"lat": "43.220093",
"long": "-71.549127"
},
"NJ": {
"name": "New Jersey",
"capital": "Trenton",
"lat": "40.221741",
"long": "-74.756138"
},
"NM": {
"name": "New Mexico",
"capital": "Santa Fe",
"lat": "35.667231",
"long": "-105.964575"
},
"NY": {
"name": "New York",
"capital": "Albany",
"lat": "42.659829",
"long": "-73.781339"
},
"NC": {
"name": "North Carolina",
"capital": "Raleigh",
"lat": "35.771",
"long": "-78.638"
},
"ND": {
"name": "North Dakota",
"capital": "Bismarck",
"lat": "48.813343",
"long": "-100.779004"
},
"OH": {
"name": "Ohio",
"capital": "Columbus",
"lat": "39.962245",
"long": "-83.000647"
},
"OK": {
"name": "Oklahoma",
"capital": "Oklahoma City",
"lat": "35.482309",
"long": "-97.534994"
},
"OR": {
"name": "Oregon",
"capital": "Salem",
"lat": "44.931109",
"long": "-123.029159"
},
"PA": {
"name": "Pennsylvania",
"capital": "Harrisburg",
"lat": "40.269789",
"long": "-76.875613"
},
"RI": {
"name": "Rhode Island",
"capital": "Providence",
"lat": "41.82355",
"long": "-71.422132"
},
"SC": {
"name": "South Carolina",
"capital": "Columbia",
"lat": "34.000",
"long": "-81.035"
},
"SD": {
"name": "South Dakota",
"capital": "Pierre",
"lat": "44.367966",
"long": "-100.336378"
},
"TN": {
"name": "Tennessee",
"capital": "Nashville",
"lat": "36.165",
"long": "-86.784"
},
"TX": {
"name": "Texas",
"capital": "Austin",
"lat": "30.266667",
"long": "-97.75"
},
"UT": {
"name": "Utah",
"capital": "Salt Lake City",
"lat": "40.7547",
"long": "-111.892622"
},
"VT": {
"name": "Vermont",
"capital": "Montpelier",
"lat": "44.26639",
"long": "-72.57194"
},
"VA": {
"name": "Virginia",
"capital": "Richmond",
"lat": "37.54",
"long": "-77.46"
},
"WA": {
"name": "Washington",
"capital": "Olympia",
"lat": "47.042418",
"long": "-122.893077"
},
"WV": {
"name": "West Virginia",
"capital": "Charleston",
"lat": "38.349497",
"long": "-81.633294"
},
"WI": {
"name": "Wisconsin",
"capital": "Madison",
"lat": "43.074722",
"long": "-89.384444"
},
"WY": {
"name": "Wyoming",
"capital": "Cheyenne",
"lat": "41.145548",
"long": "-104.802042"
}
}
for(let item of Object.keys(jsonobject)){
console.log(jsonobject[item].name)
}
您可以先使用Object.keys提取所有状态，然后尝试使用for..of循环来访问该名称