Implementing HTML th and td tags for dynamic column headers and values ​​using ngFor nested loops

Question

I'm trying to create an HTML table with dynamic tr and td. I added a nested loop in the HTML and the dynamic column headers (th) are working fine but the values ​​are not being added to the correct td.

这是我拥有的数据：

"finalResult": [
        {
            "tableNamee": "Table_1",
            "colCategories": [
                {
                    "columnnnn": "User",
                    "values": [
                        {
                            "value": "0"
                        },
                        {
                            "value": "10"
                        },
                        {
                            "value": "60"
                        },
                        {
                            "value": "0"
                        },
                        {
                            "value": "0"
                        },
                        {
                            "value": "0"
                        },
                        {
                            "value": "0"
                        },
                        {
                            "value": "0"
                        },
                        {
                            "value": "0"
                        }
                    ]
                },
                {
                    "columnnnn": "Header1",
                    "values": [
                        {
                            "value": "460"
                        }
                    ]
                },
                {
                    "columnnnn": "Amount",
                    "values": [
                        {
                            "value": "10"
                        },
                        {
                            "value": "100"
                        },
                        {
                            "value": "50"
                        }
                    ]
                }
            ]
        },
        {
            "tableNamee": "Table_2",
            "colCategories": [
                {
                    "columnnnn": "User",
                    "values": [
                        {
                            "value": "07"
                        },
                        {
                            "value": "10"
                        }
                    ]
                },
                {
                    "columnnnn": "Amount",
                    "values": [
                        {
                            "value": "70"
                        }
                    ]
                },
                {
                    "columnnnn": "User1",
                    "values": [
                        {
                            "value": "57"
                        }
                    ]
                },
                {
                    "columnnnn": "Column",
                    "values": [
                        {
                            "value": "80"
                        }
                    ]
                },
                {
                    "columnnnn": "Column2",
                    "values": [
                        {
                            "value": "10"
                        }
                    ]
                }
            ]
        }
    ]

以下是HTML代码：

<div *ngFor="let j of finalResult; index as i" class="">
    <div class=""> <span title="{{j.tableNamee}}">Table Name : {{j.tableNamee}} </span>
    </div>
    
    <div class="">
        <table class="table table-bordered">
            <tbody>
                <tr class="">
                    <th class="" scope="col" *ngFor="let k of j.colCategories">
                        {{k.columnnnn}}
                    </th>
                </tr>
                <ng-container *ngFor="let k of j.colCategories">
                    <tr class="">
                        <ng-container>
                            <div *ngFor="let m of k.values">
                                <td class="">
                                    <div class=""> <span title="{{m.value}}"> {{m.value}} </span>
                                    </div>
                                </td>
                            </div>
                        </ng-container>
                    </tr>
                </ng-container>
            </tbody>
    
        </table>
    </div>
    </div>

这里没有特定的ts代码。我只是按照上述格式操作数据，并尝试在HTML中应用循环。我做错了什么吗？

这是期望的输出： 期望的输出

这是我得到的当前输出： 当前输出

任何帮助将不胜感激！

Answer 1

Your HTML markup looks weird because your <tr> contains a <div> that wraps <td>. I think this is what is causing your problem.

I haven't tried it, but you could try changing your <table> tag to the following:

<table class="table table-bordered">
        <thead>
            <tr class="">
                <th class="" scope="col" *ngFor="let k of j.colCategories">
                    {{k.columnnnn}}
                </th>
            </tr>
        </thead>
        <tbody>
            <tr class="" *ngFor="let k of j.colCategories">
                <td class="" *ngFor="let m of k.values">
                    <div class="">
                        <span title="{{m.value}}"> {{m.value}} </span>
                    </div>
                </td>
            </tr>
        </tbody>
    </table>