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jquery - 使用 jquery 填充 html 表数据失败 Uncaught ReferenceError

转载 作者：搜寻专家 更新时间：2023-10-30 21:46:58 24 4
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我想在 Angular 中使用 jquery 根据我的数据输入创建一个表。我是 jquery 的新手，所以这可能是我忘记的一些愚蠢的东西，但我不能说它是什么。

可悲的是，当我执行 ng serve 时，什么也没有发生，只是一个空白页面。

我得到了以下代码:

HTML

<body onLoad="createHeaders('#dataTable')">
    <table #dataTable >
    </table>
</body>

TS

import { Component, OnInit } from '@angular/core';
import { MOCKUP } from '../Table';
import * as $ from "jquery";

@Component({
  selector: 'app-tabular',
  templateUrl: './tabular.component.html',
  styleUrls: ['./tabular.component.css']
})
export class TabularComponent implements OnInit {


  constructor() { }

  ngOnInit() {

  }

  //this is where i want to work in the future, lets just forget about that for the moment
  buildHTMLTableCodeFromTree(selector) {
    //var header = this.createHeaders(selector, MOCKUP.Head);
    $(selector).append("<td>test</td>");
  }

  createHeaders(selector) {
    var headObject = MOCKUP.Head;

    console.log("Er ist in der Methode!");

    var value;
    var colspan;
    var entry = "";

    for (var j = 0; j < headObject.length; j++) {
      entry = entry + "<tr>";
      for (var i = 0; i < headObject[j].length; i++) {
        value = headObject[j][i].value;
        colspan = headObject[j][i].colspan;
        entry = entry + "<th colSpan='" + colspan + "'>" + value + "</th>";
      }
      entry = entry + "</tr>";
    }
    $("dataTable").append(entry);
  }

}

table 头模型:

export const MOCKUP = {
    "Table": "tab1",
    "Head": [
        [
            {
                "value": "",
                "colspan": 1,
            },
            {
                "value": "2018",
                "colspan": 2
            },
            {
                "value": "2019",
                "colspan": 6
            }
        ],
        [
            {
                "value": "",
                "colspan": 1,
            },
            {
                "value": "December",
                "colspan": 2
            },
            {
                "value": "January",
                "colspan": 2
            },
            {
                "value": "February",
                "colspan": 2
            },
            {
                "value": "March",
                "colspan": 2
            }
        ],
        [
            {
                "value": "",
                "colspan": 1,
            },
            {
                "value": "Foo",
                "colspan": 1,
            },
            {
                "value": "Boo",
                "colspan": 1,
            },
            {
                "value": "Foo",
                "colspan": 1,
            },
            {
                "value": "Boo",
                "colspan": 1,
            },
            {
                "value": "Foo",
                "colspan": 1,
            },
            {
                "value": "Boo",
                "colspan": 1,
            },
            {
                "value": "Foo",
                "colspan": 1,
            },
            {
                "value": "Boo",
                "colspan": 1,
            }
        ]
    ],
    "Body": [
        [
            {   
                "value": "Total",
                "entryID": -1
            },
            {   
                "value": "10",
                "entryID": 33
            },
            {   
                "value": "24",
                "entryID": 34
            },
            {   
                "value": "66",
                "entryID": 35
            },
            {   
                "value": "0",
                "entryID": 36
            },
            {   
                "value": "23",
                "entryID": 37
            },
            {   
                "value": "24",
                "entryID": 38
            },
            {   
                "value": "21",
                "entryID": 39
            },
            {   
                "value": "10",
                "entryID": 40
            }
        ],
        [
            {   
                "value": "Row1",
                "entryID": -1
            },
            {   
                "value": "10",
                "entryID": 1
            },
            {   
                "value": "12",
                "entryID": 2
            },
            {   
                "value": "0",
                "entryID": 3
            },
            {   
                "value": "0",
                "entryID": 4
            },
            {   
                "value": "0",
                "entryID": 5
            },
            {   
                "value": "0",
                "entryID": 6
            },
            {   
                "value": "0",
                "entryID": 7
            },
            {   
                "value": "0",
                "entryID": 8
            }
        ]
    ]
}

我希望它是一个三行标题(年、月和我的 HEAD 数组最后一个值的最后一行)。我试着按照

我也试过按照描述的那样做 here (所以 $("#dataTable").append(entry); 但这不会改变结果。

编辑:确实存在错误，不是在执行 ng serve 的命令提示符中，而是在 Chrome 控制台中:

Uncaught ReferenceError: createHeaders is not defined at onload (localhost/:13)

显然他在执行 HTML 代码时没有实例化该方法。

编辑: 为什么我要尝试使用 jquery？注意:这可能不是问题本身所必需的，它只是一种解释

这是我的数据示例:

My data

和期望的输出:

my desired output

现在输出必须是可编辑的，并且这些编辑应该保存在我的数据库中(单击按钮时，这就是我将 entryID 保存在模型中的原因)。

对于Backend->Frontend的通信，我想到了上面的原始数据格式(这就是为什么我保存了一个entryID):

最佳答案

但是，如果您想要非常快的东西，最好不要使用 jQuery 并尽可能多地重用您生成的对象。

<table id="dataTable"></table> 

const MOCKUP = [{
  type: 'thead',
  children: [{
    type: 'tr',
    dataset: {id: 1},
    children: [
      {type: 'th', textContent: '', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: '2018', colSpan: 2, contentEditable: true},
      {type: 'th', textContent: '2019', colSpan: 6, contentEditable: true}
    ]
  }, {
    type: 'tr',
    dataset: {id: 2},
    children: [
      {type: 'th', textContent: '', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: 'December', colSpan: 2, contentEditable: true},
      {type: 'th', textContent: 'January', colSpan: 2, contentEditable: true},
      {type: 'th', textContent: 'February', colSpan: 2, contentEditable: true},
      {type: 'th', textContent: 'March', colSpan: 2, contentEditable: true}
    ]
  }, {
    type: 'tr',
    dataset: {id: 3},
    children: [
      {type: 'th', textContent: '', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: 'Foo', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: 'Boo', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: 'Foo', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: 'Boo', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: 'Foo', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: 'Boo', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: 'Foo', colSpan: 1, contentEditable: true},
      {type: 'th', textContent: 'Boo', colSpan: 1, contentEditable: true}
    ]
  }]
}];

const cache = {};

function assign(destination, source) {
  for (const key in source) {
    if (source.hasOwnProperty(key)) {
      const value = source[key];

      if (typeof value === 'object') {
        assign(destination[key], value);
      } else if (null != destination) {
        destination[key] = value;
      }
    }
  }

  return destination;
}

function get(data, pathStr) {
  const path = pathStr.split('.');
  let i = path.length;

  while (--i) {
    data = data[path[i]];
  }

  return data;
}

function disassemble(target) {
  let element;

  while ((element = target.lastElementChild)) {
    target.removeChild(element);
    disassemble(element);

    const type = element.tagName.toLowerCase();
    const c = cache[type] || (cache[type] = []);

    c.push(element);
  }
}

function assemble(target, path, data = []) {
  const fragment = document.createDocumentFragment();

  data.forEach(({type, children, ...config}, i) => {
    const element = assign(cache[type] && cache[type].pop() || document.createElement(type), config);
    const newPath = `.${i}${path}`;

    element.dataset.path = newPath;
    assemble(element, `.children${newPath}`, children);

    fragment.appendChild(element);
  });

  target.appendChild(fragment);
}

function render(target, data) {
  window.requestAnimationFrame(() => {
    disassemble(target);
    assemble(target, '', data);
  });
}

const table = document.getElementById('dataTable');

table.addEventListener('input', ({target: {dataset, textContent, parentElement}}) => {
  // use this to update local data
  get(MOCKUP, dataset.path).textContent = textContent;

  // easy access to row id (dataset values can only be strings)
  parentElement.dataset.id

  // raw dataset with all types and deep objects intact
  get(MOCKUP, parentElement.dataset.path).dataset.id
});

render(table, MOCKUP);

不如 React 快，但非常接近。

关于jquery - 使用 jquery 填充 html 表数据失败 Uncaught ReferenceError，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53300824/

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