javascript - 使用 Javascript 将 JSON 嵌套到编号的 HTML 表

Question

我正在尝试从 JSON 生成 HTML 表格

提供的 JSON 是深度嵌套的。借助此线程 How do I loop through deeply nested properties of a JavaScript object? ，我能够获取 JSON 的值，但我对如何生成 HTML 表感到困惑

var districts = {
    "district": [{
        "ration": 4,
        "states": [{
            "name": "Louisiana",
            "population": 42383,
            "cities": [{
                "name": "Cavalero"
            }]
        }]
    }, {
        "ration": 1,
        "states": [{
            "name": "Colorado",
            "population": 980,
            "cities": []
        }, {
            "name": "Arkansas",
            "population": 58998,
            "cities": []
        }, {
            "name": "Illinois",
            "population": 59333,
            "cities": [{
                "name": "Kenwood"
            }]
        }]
    }, {
        "ration": 2,
        "states": [{
            "name": "Washington",
            "population": 83984,
            "cities": [{
                "name": "Conestoga"
            }, {
                "name": "Whitehaven"
            }, {
                "name": "Dellview"
            }]
        }, {
            "name": "West Virginia",
            "population": 38034,
            "cities": []
        }]
    }]
};
var i, district, j, states, k, cities;
for (i = 0; i < districts.district.length; i++) {
    district = districts.district[i];
    print(i + 1, ". District", i + 1, "consists of following states", "--- ration", district.ration);
    for (j = 0; j < district.states.length; j++) {
        states = district.states[j];
        var said = (states.cities.length > 0) ? ("consists of following cities") : ("");
        print(i + 1, ".", j + 1, states.name, said, "--- population", states.population);
        for (k = 0; k < states.cities.length; k++) {
            cities = states.cities[k];
            print("     ", i + 1, ".", j + 1, ".", k + 1, cities.name);
        }
    }
}

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感谢任何指点/帮助/建议

Answer 1

您需要生成一个表，如下所示:

var districts = {
    "district": [{
        "ration": 4,
        "states": [{
            "name": "Louisiana",
            "population": 42383,
            "cities": [{
                "name": "Cavalero"
            }]
        }]
    }, {
        "ration": 1,
        "states": [{
            "name": "Colorado",
            "population": 980,
            "cities": []
        }, {
            "name": "Arkansas",
            "population": 58998,
            "cities": []
        }, {
            "name": "Illinois",
            "population": 59333,
            "cities": [{
                "name": "Kenwood"
            }]
        }]
    }, {
        "ration": 2,
        "states": [{
            "name": "Washington",
            "population": 83984,
            "cities": [{
                "name": "Conestoga"
            }, {
                "name": "Whitehaven"
            }, {
                "name": "Dellview"
            }]
        }, {
            "name": "West Virginia",
            "population": 38034,
            "cities": []
        }]
    }]
};
//Start of the table, including header
var table = '<table><thead><tr><th>Num</th><th>District</th><th>Population</th><th>Ration</th></tr></thead><tbody>';

//Num
for (var i = 0; i < districts.district.length; i++) {
    //District
    var district = districts.district[i];
    //First row
    table += '<tr><td>' + (i + 1) + '</td><td>District ' + district.ration + ' consists of the following states:</td><td></td><td>' + district.ration + '</td></tr>';
    //States
    var states = district.states;
    for (var j = 0; j < states.length; j++) {
        table += '<tr><td></td><td>' + (i + 1) + '.' + (j + 1) + ' ' + states[j] + ((states[j].cities && states[j].cities.length) ? ' consists of following cities:' : '') + '</td><td>' + states[j].population + '</td><td></td></tr>';
        //Cities
        if (states[j].cities) {
            for (var k = 0; k < states[j].cities; k++) {
                table += '<tr><td></td><td>' + (i + 1) + '.' + (j + 1) + '.' + (k + 1) + ' ' + states[j].cities[k].name + '</td><td></td><td></td></tr>';
            }
        }
    }
}

//End of the table
table += '</tbody></table>';

然后将 table 添加到您的 html 中。