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:
和期望的输出:
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/