This tutorial will teach you how to create a dynamic HTML table through the use of Javascript and Document Object Model [DOM] manipulation. The number of table rows and cell content will vary depending on your data.
In this tutorial, I will be creating a scoreboard for a Javascript video game and the data will be coming from a fetch request. The source of the data for your application may be different, but the logic should still apply. This tutorial will include screenshots for the code, website rendering, and the full HTML at each step in the tutorial.
The copy-paste-friendly code is at the end. 🔥
The data for this HTML table comes from an SQLite database table. The number of rows will vary depending on the number of records in the scores table.
HTML Table Tags:
An HTML table consists of one This HTML table will also include the optional and
Tag Definitions: The The The The The
The We will be creating all the tags that are defined above through document method document.createElement[tagName] and we will append them to a Most
of the ‘classNames’ that you will see in the code are there for styling purposes and are completely optional. The CSS styling will not be discussed, but it will be available for you to reference and test on your own. The Steps to create the table: Example of the singleScore object that is being passed into the next function: Lastly, I mentioned that this example table relied on a fetch to receive its data. Here is the code for the fetch that supplies all the individual scores to the ‘appendScores’ function: I hope you have found this tutorial helpful. If you have any questions, feel free to ask them below. Here is a short video of the application that I created this specific table for! All of the code in the snippets: All
the CSS styling for the table in this tutorial: element and one or more
,
, and elements for additional styling options. elements. tag defines an HTML table.
tag defines a row in an HTML table. tag defines a header cell in an HTML table.
tag defines a standard data cell in an HTML table. tag is used to group header content in an HTML table.
tag is used to group the body content in an HTML table.
The Tutorial:
let tableHeaders = [“Global Ranking”, “Username”, “Score”, “Time Alive [seconds]”, “Accuracy [%]”]
.
element with all 5 of the strings in the ‘tableHeaders’ variable displayed above as the values inside the respective cell
elements. tags that correspond to each score record in our scores table later. onto the ‘scoreboard’
tags that will hold a tag for each one of the columns in your table. The following function will create a new row when given a score
object. singleScore = { "id": 6, "score": 115, "time_alive": 70.659, "accuracy": 17.1, "user_id": 1, "user": { "username": "daniel" }}
const scoreDiv = document.querySelector["div.scoreboard"] // Find the scoreboard div in our htmllet tableHeaders = ["Global Ranking", "Username", "Score", "Time Alive [seconds]", "Accuracy [%]"]const createScoreboardTable = [] => {while [scoreDiv.firstChild] scoreDiv.removeChild[scoreDiv.firstChild] // Remove all children from scoreboard div [if any]let scoreboardTable = document.createElement['table'] // Create the table itselfscoreboardTable.className = 'scoreboardTable'let scoreboardTableHead = document.createElement['thead'] // Creates the table header group elementscoreboardTableHead.className = 'scoreboardTableHead'let scoreboardTableHeaderRow = document.createElement['tr'] // Creates the row that will contain the headersscoreboardTableHeaderRow.className = 'scoreboardTableHeaderRow'// Will iterate over all the strings in the tableHeader array and will append the header cells to the table header rowtableHeaders.forEach[header => {let scoreHeader = document.createElement['th'] // Creates the current header cell during a specific iterationscoreHeader.innerText = headerscoreboardTableHeaderRow.append[scoreHeader] // Appends the current header cell to the header row}]scoreboardTableHead.append[scoreboardTableHeaderRow] // Appends the header row to the table header group elementscoreboardTable.append[scoreboardTableHead]let scoreboardTableBody = document.createElement['tbody'] // Creates the table body group elementscoreboardTableBody.className = "scoreboardTable-Body"scoreboardTable.append[scoreboardTableBody] // Appends the table body group element to the tablescoreDiv.append[scoreboardTable] // Appends the table to the scoreboard div}// The function below will accept a single score and its index to create the global rankingconst appendScores = [singleScore, singleScoreIndex] => {const scoreboardTable = document.querySelector['.scoreboardTable'] // Find the table we createdlet scoreboardTableBodyRow = document.createElement['tr'] // Create the current table rowscoreboardTableBodyRow.className = 'scoreboardTableBodyRow'// Lines 72-85 create the 5 column cells that will be appended to the current table rowlet scoreRanking = document.createElement['td']scoreRanking.innerText = singleScoreIndexlet usernameData = document.createElement['td']usernameData.innerText = singleScore.user.usernamelet scoreData = document.createElement['td']scoreData.innerText = singleScore.scorelet timeData = document.createElement['td']timeData.innerText = singleScore.time_alivelet accuracyData = document.createElement['td']accuracyData.innerText = singleScore.accuracyscoreboardTableBodyRow.append[scoreRanking, usernameData, scoreData, timeData, accuracyData] // Append all 5 cells to the table rowscoreboardTable.append[scoreboardTableBodyRow] // Append the current row to the scoreboard table body}const getScores = [] => {fetch['//localhost:3000/scores'] // Fetch for all scores. The response is an array of objects that is sorted in decreasing order.then[res => res.json[]].then[scores => {createScoreboardTable[] // Clears scoreboard div if it has any children nodes, creates & appends the table// Iterates through all the objects in the scores array and appends each one to the table bodyfor [const score of scores] {let scoreIndex = scores.indexOf[score] + 1 // Index of score in score array for global ranking [these are already sorted in the back-end]appendScores[score, scoreIndex] // Creates and appends each row to the table body}}]}
.scoreboardTable {padding: 0;margin: auto;border-collapse: collapse;width: 80%;text-align: center;color: whitesmoke;}.scoreboardTableHeaderRow {color: darkorange;font-weight: bold;height: 50px;}.scoreboardTableBodyRow:nth-child[odd]{background-color: rgba[128, 128, 128, 0.050];}#latestUserScore {background-color: crimson;}.scoreboardTableBodyRow:hover{background-color: darkorange;}.scoreboardTable tr td {height: 25px;}
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