Utwórz tabelę za pomocą JavaScript

Question 1

Mam funkcję JavaScript, która tworzy tabelę z 3 wierszami i 2 komórkami.

Czy ktoś mógłby mi powiedzieć, jak mogę utworzyć poniższą tabelę za pomocą mojej funkcji (muszę to zrobić w mojej sytuacji)?

Oto mój kod javascript i html podany poniżej:

function tableCreate() {
  //body reference 
  var body = document.getElementsByTagName("body")[0];

  // create elements <table> and a <tbody>
  var tbl = document.createElement("table");
  var tblBody = document.createElement("tbody");

  // cells creation
  for (var j = 0; j <= 2; j++) {
    // table row creation
    var row = document.createElement("tr");

    for (var i = 0; i < 2; i++) {
      // create element <td> and text node 
      //Make text node the contents of <td> element
      // put <td> at end of the table row
      var cell = document.createElement("td");
      var cellText = document.createTextNode("cell is row " + j + ", column " + i);

      cell.appendChild(cellText);
      row.appendChild(cell);
    }

    //row added to end of table body
    tblBody.appendChild(row);
  }

  // append the <tbody> inside the <table>
  tbl.appendChild(tblBody);
  // put <table> in the <body>
  body.appendChild(tbl);
  // tbl border attribute to 
  tbl.setAttribute("border", "2");
}

<table width="100%" border="1">
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
  </tr>
  <tr>
    <td>&nbsp;</td>
  </tr>
</table>

Rozwiń fragment

Question 2

To powinno działać (od kilku zmian do twojego kodu powyżej).

function tableCreate() {
  var body = document.getElementsByTagName('body')[0];
  var tbl = document.createElement('table');
  tbl.style.width = '100%';
  tbl.setAttribute('border', '1');
  var tbdy = document.createElement('tbody');
  for (var i = 0; i < 3; i++) {
    var tr = document.createElement('tr');
    for (var j = 0; j < 2; j++) {
      if (i == 2 && j == 1) {
        break
      } else {
        var td = document.createElement('td');
        td.appendChild(document.createTextNode('\u0020'))
        i == 1 && j == 1 ? td.setAttribute('rowSpan', '2') : null;
        tr.appendChild(td)
      }
    }
    tbdy.appendChild(tr);
  }
  tbl.appendChild(tbdy);
  body.appendChild(tbl)
}
tableCreate();

Rozwiń fragment

Question 3

Nieco krótszy kod wykorzystujący insertRowi insertCell:

function tableCreate(){
    var body = document.body,
        tbl  = document.createElement('table');
    tbl.style.width  = '100px';
    tbl.style.border = '1px solid black';

    for(var i = 0; i < 3; i++){
        var tr = tbl.insertRow();
        for(var j = 0; j < 2; j++){
            if(i == 2 && j == 1){
                break;
            } else {
                var td = tr.insertCell();
                td.appendChild(document.createTextNode('Cell'));
                td.style.border = '1px solid black';
                if(i == 1 && j == 1){
                    td.setAttribute('rowSpan', '2');
                }
            }
        }
    }
    body.appendChild(tbl);
}
tableCreate();

Rozwiń fragment

Ponadto nie wykorzystuje to niektórych „złych praktyk”, takich jak ustawienie borderatrybutu zamiast używania CSS, i uzyskuje dostęp do metody bodythrough document.bodyzamiast document.getElementsByTagName('body')[0];

Question 4

function addTable() {
  var myTableDiv = document.getElementById("myDynamicTable");

  var table = document.createElement('TABLE');
  table.border = '1';

  var tableBody = document.createElement('TBODY');
  table.appendChild(tableBody);

  for (var i = 0; i < 3; i++) {
    var tr = document.createElement('TR');
    tableBody.appendChild(tr);

    for (var j = 0; j < 4; j++) {
      var td = document.createElement('TD');
      td.width = '75';
      td.appendChild(document.createTextNode("Cell " + i + "," + j));
      tr.appendChild(td);
    }
  }
  myTableDiv.appendChild(table);
}
addTable();

<div id="myDynamicTable"></div>

Rozwiń fragment

Question 5

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
        <title>Insert title here</title>
    </head>
    <body>
        <table id="myTable" cellpadding="2" cellspacing="2" border="1" onclick="tester()"></table>
        <script>
            var student;
            for (var j = 0; j < 10; j++) {
                student = {
                    name: "Name" + j,
                    rank: "Rank" + j,
                    stuclass: "Class" + j,
                };
                var table = document.getElementById("myTable");
                var row = table.insertRow(j);
                var cell1 = row.insertCell(0);
                var cell2 = row.insertCell(1);
                var cell3 = row.insertCell(2);

                cell1.innerHTML = student.name,
                cell2.innerHTML = student.rank,
                cell3.innerHTML = student.stuclass;
            }
        </script>
    </body>
</html>

Question 6

<!DOCTYPE html>
<html>
    <body>
        <p id="p1">
            <b>Enter the no of row and column to create table:</b>
            <br/><br/>
            <table>
                <tr>
                    <th>No. of Row(s) </th>
                    <th>No. of Column(s)</th>
                </tr>
                <tr>
                    <td><input type="text" id="row" value="4" /> X</td>
                    <td><input type="text" id="col" value="7" />Y</td>
                </tr>
            </table>
            <br/>
            <button id="create" onclick="create()">create table</button>
        </p>
        <br/><br/>
        <input type="button" value="Reload page" onclick="reloadPage()">
        <script>
            function create() {
                var row = parseInt(document.getElementById("row").value);
                var col = parseInt(document.getElementById("col").value);

                var tablestart="<table id=myTable border=1>";
                var tableend = "</table>";
                var trstart = "<tr bgcolor=#ff9966>";
                var trend = "</tr>";
                var tdstart = "<td>";
                var tdend = "</td>";
                var data="data in cell";
                var str1=tablestart + trstart + tdstart + data + tdend + trend + tableend;
                document.write(tablestart);

                for (var r=0;r<row;r++) {
                    document.write(trstart);
                    for(var c=0; c<col; c++) {
                        document.write(tdstart+"Row."+r+" Col."+c+tdend);
                    }
                }

                document.write(tableend);
                document.write("<br/>");
                var s="<button id="+"delete"+" onclick="+"deleteTable()"+">Delete top Row </button>";
                document.write(s);
                var relod="<button id="+"relod"+" onclick="+"reloadPage()"+">Reload Page </button>";
                document.write(relod);
            }
            function deleteTable() {
                var dr=0;
                if(confirm("It will be deleted..!!")) {
                    document.getElementById("myTable").deleteRow(dr);
                }
            }
            function reloadPage(){
                location.reload();
            }
        </script>
    </body>
</html>

Question 7

Mam nadzieję, że okaże się to pomocne.

HTML:

<html>
<head>
    <link rel = "stylesheet" href = "test.css">
<body>

</body>
<script src = "test.js"></script>
</head>
</html>

JAVASCRIPT:

var tableString = "<table>",
    body = document.getElementsByTagName('body')[0],
    div = document.createElement('div');

for (row = 1; row < 101; row += 1) {

    tableString += "<tr>";

    for (col = 1; col < 11; col += 1) {

        tableString += "<td>" + "row [" + row + "]" + "col [" + col + "]" + "</td>";
    }
    tableString += "</tr>";
}

tableString += "</table>";
div.innerHTML = tableString;
body.appendChild(div);

Question 8

Może nie rozwiązać problemu opisanego w tym konkretnym pytaniu, ale może być przydatny dla osób, które chcą tworzyć tabele z tablicy obiektów:

function createTable(objectArray, fields, fieldTitles) {
  let body = document.getElementsByTagName('body')[0];
  let tbl = document.createElement('table');
  let thead = document.createElement('thead');
  let thr = document.createElement('tr');
  fieldTitles.forEach((fieldTitle) => {
    let th = document.createElement('th');
    th.appendChild(document.createTextNode(fieldTitle));
    thr.appendChild(th);
  });
  thead.appendChild(thr);
  tbl.appendChild(thead);

  let tbdy = document.createElement('tbody');
  let tr = document.createElement('tr');
  objectArray.forEach((object) => {
    let tr = document.createElement('tr');
    fields.forEach((field) => {
      var td = document.createElement('td');
      td.appendChild(document.createTextNode(object[field]));
      tr.appendChild(td);
    });
    tbdy.appendChild(tr);    
  });
  tbl.appendChild(tbdy);
  body.appendChild(tbl)
  return tbl;
}

createTable([
  {name: 'Banana', price: '3.04'},
  {name: 'Orange', price: '2.56'},
  {name: 'Apple', price: '1.45'}
],
['name', 'price'], ['Name', 'Price']);

Rozwiń fragment

Question 9

<style>
    body{
        background: radial-gradient(rgba(179,255,0.5),rgba(255,255,255,0.5),rgba(0,0,0,0.2));
        text-align: center;
    }
    #name{
        margin-top: 50px;
    }
    .input{
        font-size: 25px;
        color: #004d00;
        font-weight: 700;
        font-family: cursive;
    }
    #entry{
        width: 150px;
        height: 40px;
        font-size: 23px;
        font-family:  cursive;
        background-color: #001a66;
        color: whitesmoke;
        box-shadow: 0 2px 2px 0 rgba(0,0,0,0.5);
        margin: 20px;
    }
    table{
        border-collapse: collapse;
        width: 50%;
        margin: 50px auto;
        background-color: burlywood;
    }
    table,th,td{
       border: 2px solid black;
       padding:5px;

    }
    th{
        font-size: 30px;
        font-weight: 700;
        font-family: Arial;
        color: #004d00;
    }
    td{
        font-size: 25px;
        color: crimson;
        font-weight: 400;
        font-family: Georgia;
    }
    .length{
        width: 20%;
    }
</style>
<body>
    <!-- Code to get student details -->
    <div id="container" >
        <div class="input">
             Name: <input type="text" id="name" class="length" placeholder="eg: Anil Ambani"/>
        </div>
        <div class="input">
             Email: <input type="text" id="mail" class="length" placeholder="eg: AnilAmbani@gmail.com"/>
        </div>
        <div class="input">
             Phone: <input type="text" id="phn"  class="length" placeholder="eg: 9898989898"/>
        </div>
        <div class="input">
             SLNO: <input type="number" id="sln" class="length" placeholder="eg: 1"/>
        </div>
        <br>
        <button id="entry"> I/P ENTRY</button>
    </div>
    <table id="tabledata">
       <tr>
          <th> Name</th>
          <th> Email</th>
          <th> Phone</th>
          <th> Slno</th>
       </tr> 
    </table>
</body>
<script>
    var entry = document.getElementById('entry');
    entry.addEventListener("click",display);
    var row = 1;
    function display(){
        var nam =  document.getElementById('name').value;
        var emal = document.getElementById('mail').value;
        var ph = document.getElementById('phn').value;
        var sl = document.getElementById('sln').value;
        var disp = document.getElementById("tabledata");
        var newRow = disp.insertRow(row);
        var cell1 = newRow.insertCell(0);
        var cell2 = newRow.insertCell(1);
        var cell3 = newRow.insertCell(2);
        var cell4 = newRow.insertCell(3);
        cell1.innerHTML = nam;
        cell2.innerHTML = emal;
        cell3.innerHTML = ph;
        cell4.innerHTML = sl;
        row++;
    }
</script>

Question 10

Napisałem wersję, która może dynamicznie analizować listę obiektów, aby utworzyć tabelę jako ciąg. Podzieliłem go na trzy funkcje do pisania kolumn nagłówka, wierszy treści i zszywania wszystkich razem. Wyeksportowałem jako ciąg znaków do użytku na serwerze. Mój kod używa ciągów szablonów, aby zachować elegancję.

Jeśli chcesz dodać stylizację (jak bootstrap), możesz to zrobić, dodając więcej html do HEAD_PREFIXi HEAD_SUFFIX.

// helper functions
const TABLE_PREFIX = '<div><table class="tg">';
const TABLE_SUFFIX = '</table></div>';
const TABLE_HEAD_PREFIX = '<thead><tr>';
const TABLE_HEAD_SUFFIX = '</tr></thead>';
const TABLE_BODY_PREFIX = '<tbody><tr>';
const TABLE_BODY_SUFFIX = '</tr></tbody>';

function generateTableHead(cols) {
  return `
    ${TABLE_HEAD_PREFIX}
      <td>#</td>
    ${cols.map((col) => `<td>${col}</td>`).join('')}
    ${TABLE_HEAD_SUFFIX}`;
}

function generateTableBody(cols, data) {
  return `
    ${TABLE_BODY_PREFIX}
    ${data.map((object, index) => `
        <tr><td>${index}</td>
        ${cols.map((col) => `<td>${object[col]}</td>`).join('')}
      </tr>`).join('')}
    ${TABLE_BODY_SUFFIX}`;
}

/**
 * generate an html table from an array of objects with the same values
 *
 * @param {array<string>} cols array of object columns used in order of columns on table
 * @param {array<object>} data array of objects containing data in a single depth
 */
function generateTable(data, defaultCols = false) {
  let cols = defaultCols;
  if (!cols) cols = Object.keys(data[0]); // auto generate columns if not defined
  return `
    ${TABLE_PREFIX}
    ${generateTableHead(cols)}
    ${generateTableBody(cols, data)}
    ${TABLE_SUFFIX}`;
}

Oto przykład użycia:

const mountains = [
  { height: 200, name: "Mt. Mountain" },
  { height: 323, name: "Old Broken Top"},
]
const htmlTableString = generateTable(mountains );

Question 11

var div = document.createElement('div');
            div.setAttribute("id", "tbl");
            document.body.appendChild(div)
                document.getElementById("tbl").innerHTML = "<table border = '1'>" +
              '<tr>' +
                '<th>Header 1</th>' +
                '<th>Header 2</th> ' +
                '<th>Header 3</th>' +
              '</tr>' +
              '<tr>' +
                '<td>Data 1</td>' +
                '<td>Data 2</td>' +
                '<td>Data 3</td>' +
              '</tr>' +
              '<tr>' +
                '<td>Data 1</td>' +
                '<td>Data 2</td>' +
                '<td>Data 3</td>' +
              '</tr>' +
              '<tr>' +
                '<td>Data 1</td>' +
                '<td>Data 2</td>' +
                '<td>Data 3</td>' +
              '</tr>'

Rozwiń fragment

Question 12

Oto jak przejść przez obiekt javascript i umieścić dane w tabeli, kod zmodyfikowany na podstawie odpowiedzi @ Vanuan.

<body>
    <script>
    function createTable(objectArray, fields, fieldTitles) {
      let body = document.getElementsByTagName('body')[0];
      let tbl = document.createElement('table');
      let thead = document.createElement('thead');
      let thr = document.createElement('tr');

      for (p in objectArray[0]){
        let th = document.createElement('th');
        th.appendChild(document.createTextNode(p));
        thr.appendChild(th);
        
      }
     
      thead.appendChild(thr);
      tbl.appendChild(thead);

      let tbdy = document.createElement('tbody');
      let tr = document.createElement('tr');
      objectArray.forEach((object) => {
        let n = 0;
        let tr = document.createElement('tr');
        for (p in objectArray[0]){
          var td = document.createElement('td');
          td.setAttribute("style","border: 1px solid green");
          td.appendChild(document.createTextNode(object[p]));
          tr.appendChild(td);
          n++;
        };
        tbdy.appendChild(tr);    
      });
      tbl.appendChild(tbdy);
      body.appendChild(tbl)
      return tbl;
    }

    createTable([
                  {name: 'Banana', price: '3.04'}, // k[0]
                  {name: 'Orange', price: '2.56'},  // k[1]
                  {name: 'Apple', price: '1.45'}
               ])
    </script>

Rozwiń fragment

Question 13

var btn = document.createElement('button');
btn.innerHTML = "Create Table";
document.body.appendChild(btn);
btn.addEventListener("click", createTable, true);
function createTable(){
var div = document.createElement('div');
div.setAttribute("id", "tbl");
document.body.appendChild(div)
	document.getElementById("tbl").innerHTML = "<table border = '1'>" +
  '<tr>' +
    '<th>Header 1</th>' +
    '<th>Header 2</th> ' +
    '<th>Header 3</th>' +
  '</tr>' +
  '<tr>' +
    '<td>Data 1</td>' +
    '<td>Data 2</td>' +
    '<td>Data 3</td>' +
  '</tr>' +
  '<tr>' +
    '<td>Data 1</td>' +
    '<td>Data 2</td>' +
    '<td>Data 3</td>' +
  '</tr>' +
  '<tr>' +
    '<td>Data 1</td>' +
    '<td>Data 2</td>' +
    '<td>Data 3</td>' +
  '</tr>' 
};

Rozwiń fragment