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I'm trying to use document.getElementByClassId().style.color to change the color of an element in my HTML document. I can see that it does add an inline style tag to the element but they are seemingly ignored by the browser.
I tried using the !important tag but that changed nothing. Here is my HTML document. I changed my CSS for the elements I want to modify into inline tags but they are ignored as well. Everything else works so far.
Here is my code (I'm a beginner please go easy on me :/).
//Only gets used to make the rows array.
var cells = [];
//Array that contains the entirety of the table element.
var rows = [];
//Random number to be used to color a random cell.
var rand = 0;
//Unique ID number that gets applied to each cell on the gameboard.
var id = 0;
//Calls cellMake.
var makeBoard = function(size) {
cellMake(size);
}
//Adds opening and closing tags at the beginning and end of each string then writes them to the rows array.
var rowMake = function(num) {
for(c = 0; num > c; c++) {
rows[c] = '<tr>' + cells[c] + '</tr>';
}
writeBoard();
}
//Writes cell elements to the cells array based on how many columns the makeBoard function was called for.
var cellMake = function(num) {
for(a = 0; num > a; a++) {
cells[a] = '';
for(b = 0; num > b; b++) {
cells[a] += '<td id="' + id + '" class="pixel">';
id++;
}
}
rowMake(num);
}
//Chooses random pixel from the board and sets its color.
var choosePixel = function() {
rand = Math.round(Math.random() * rows.length * rows.length);
console.log(rand);
document.getElementById(rand).style.color = 'red';
}
//Writes each element of the rows array onto the HTML document.
var writeBoard = function() {
for(d = 0; rows.length > d; d++) {
document.getElementById('gameboard').innerHTML += rows[d];
}
choosePixel();
}
window.onload = function() {
makeBoard(50);
}<!DOCTYPE html>
<html>
<head>
<title>Can I write JS?</title>
<script src="script.js"></script>
<style>
body {
text-align: center;
background-color: black;
}
#gameboard {
display: inline-block;
margin: 0 auto;
padding-top: 5%;
}
.pixel {
height: 5px;
width: 5px;
}
</style>
</head>
<body>
<table id="gameboard"></table>
</body>
</html>
615
asked May 10 '26 15:05
You have to style the backgroundColor instead of color, because the cells don't contain any text, to which the color would be applied to
//Only gets used to make the rows array.
var cells = [];
//Array that contains the entirety of the table element.
var rows = [];
//Random number to be used to color a random cell.
var rand = 0;
//Unique ID number that gets applied to each cell on the gameboard.
var id = 0;
//Calls cellMake.
var makeBoard = function(size) {
cellMake(size);
}
//Adds opening and closing tags at the beginning and end of each string then writes them to the rows array.
var rowMake = function(num) {
for(c = 0; num > c; c++) {
rows[c] = '<tr>' + cells[c] + '</tr>';
}
writeBoard();
}
//Writes cell elements to the cells array based on how many columns the makeBoard function was called for.
var cellMake = function(num) {
for(a = 0; num > a; a++) {
cells[a] = '';
for(b = 0; num > b; b++) {
cells[a] += '<td id="' + id + '" class="pixel"></td>';
id++;
}
}
rowMake(num);
}
//Chooses random pixel from the board and sets its color.
var choosePixel = function() {
rand = Math.round(Math.random() * rows.length * rows.length);
console.log(rand);
document.getElementById(rand).style.backgroundColor = 'red';
}
//Writes each element of the rows array onto the HTML document.
var writeBoard = function() {
for(d = 0; rows.length > d; d++) {
document.getElementById('gameboard').innerHTML += rows[d];
}
choosePixel();
}
window.onload = function() {
makeBoard(50);
}<!DOCTYPE html>
<html>
<head>
<title>Can I write JS?</title>
<script src="script.js"></script>
<style>
body {
text-align: center;
background-color: black;
}
#gameboard {
display: inline-block;
margin: 0 auto;
padding-top: 5%;
}
.pixel {
height: 5px;
width: 5px;
}
</style>
</head>
<body>
<table id="gameboard"></table>
</body>
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