What is the best way to designate a script as the background for a specific <section>?

Currently, I am working on a single-page website project using Bootstrap. This site is split into 4 sections, each encapsulated in a 'section' with its own distinctive background color/image and content. On the first section that covers the entire screen and features a Navbar at the top with various headers, I would like to incorporate a script as the background, rather than just a basic image or solid color like the other sections.

To achieve this effect, I am seeking guidance on how to integrate a JavaScript code as the background while ensuring it does not interfere with any other elements within the same section and allows text to be displayed over this background element.

The specific script that I intend to use as the background (sourced from codePen.io) can be found here: http://jsfiddle.net/oleg_korol/a1bxr5ua/1/

Below is the code snippet:

 ... (insert JavaScript code snippet here)

Thank you for your assistance!

javascripthtmlcssbackground

Answer №1

To achieve this effect, you can utilize an iframe and position it as an absolute element spanning the full width and height of the body like so:

HTML:

<body>
    <div id="iframe"><iframe name="result" sandbox="allow-forms allow-popups allow-scripts allow-same-origin" frameborder="0" src="//fiddle.jshell.net/oleg_korol/a1bxr5ua/1/show/"></iframe></div>
            <!--Your page content-->
</body>

CSS:

html, body {
    margin:0px;
    width:100%;
    height:100%;
    overflow:hidden;
}
iframe {
    width:100%;
    height:100%;
}

#iframe {
    position: absolute;
    float: left;
    clear: both;
    width: 100%;
    height: 100%;
    z-index: 0;
}

Take a look at this jsfiddle showcasing the above codes: https://jsfiddle.net/AndrewL32/kkLLxkxk/2/

You can also view a StackOverflow snippet with the provided codes below.

ALTERNATIVELY, WITHOUT IFRAME:

If your goal is to use the canvas as a background-image for the entire page, the existing code you're using should suffice given that the width and height are defined:

canvas {
    position:absolute;
    width:100%;
    height:100%;
    top:0px;
    left:0px;
}

However, if you only want the canvas as a background-image for a specific div, simply add a position:relative; property to the parent div as demonstrated below:

HTML:

<div id="canvas-box">
    <canvas id=c></canvas>
</div>

CSS:

#canvas-box {
    position:relative;
    width:500px;
    height:500px;
}
canvas {
    position: absolute;
    top: 0;
    left: 0;
    width:100%;
    height:100%;
}

Check out this jsfiddle for implementing canvas as a background for a specific div: http://jsfiddle.net/AndrewL32/a1bxr5ua/5/

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