I am making a small online app that will require the user to input some options and the site will change it's background and similar features based on their input.
However, I have not been able to change any of the document style properties through JavaScript code.
Am I missing something?
let bgType = prompt("Which type of background do you want? Color or image: ");
if (bgType == "color" || bgType == "Color") {
let colBg = prompt("Enter the color you want");
document.getElementById("background").style.backgroundColor = colBg; // I've tried putting default colors here for testing, but those didn't work either
} else if (bgType == "image" || bgType == "Image") {
let imgBg = prompt("Enter the number of the image you want (1-3): ");
document.getElementById("background").style.backgroundColor = ""; // Unfinished
}
In case it's needed here is also the HTML and CSS code HTML:
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<meta http-equiv='X-UA-Compatible' content='IE=edge'>
<title>Greeting card generator</title>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<link rel='stylesheet' type='text/css' media='screen' href='gfx.css'>
</head>
<body>
<script src='script.js'></script>
<div id="background" class="content">
<!-- <img src="Temp1.jpg" alt="Greeting card image"> -->
<h1 id="Title" class="text">
Sample title text
</h1>
<h2 id="Name" class="text">
Sample name text
</h2>
<h3 id="Message" class="text">
Sample message text
</h3>
</div>
</body>
</html>
CSS:
html, body {
height: 100%;
margin: 0;
}
#background {
width: 100%;
min-height: 100%;
background-image: url();
background-color: white;
background-size: cover;
background-position: center;
background-repeat: no-repeat;
}
.text {
font-family: verdana;
text-align: center;
}
#Title {
padding-top: 20%;
}
Just simply add '#' at the beginning of the colBg. use like this
<script>
let bgType = prompt("Which type of background do you want? Color or image: ");
if (bgType == "color" || bgType == "Color") {
let colBg = prompt("Enter the color you want");
document.getElementById("background").style.backgroundColor = `#${colBg}`; // I've tried putting default colors here for testing, but those didn't work either
} else if (bgType == "image" || bgType == "Image") {
let imgBg = prompt("Enter the number of the image you want (1-3): ");
document.getElementById("background").style.backgroundColor = ""; // Unfinished
}
</script>
make sure that your input always take a color value like #fff
The problem is that the script runs before the DOM is fully constructed and the element that you want to style actually exists.
You need to move your <script> tag to the end of the <body> element:
<body>
<div id="background" class="content">
<!-- <img src="Temp1.jpg" alt="Greeting card image"> -->
<h1 id="Title" class="text">Sample title text</h1>
<h2 id="Name" class="text">Sample name text</h2>
<h3 id="Message" class="text">Sample message text</h3>
</div>
<script src="script.js"></script>
</body>
When you send a color code, you will add #. If the name of the color is sent, then all the names must be sent. As like this: color:#000 Or color:Black.