Adjusting the canvas height to perfectly fit the entire scrollable page

Here are the current attributes of my canvas element:

var c = document.getElementById("c");
    var ctx = c.getContext("2d");

    //making the canvas appear fullscreen
    c.height = window.innerHeight;
    c.width = window.innerWidth;

Upon placing the canvas on a page with more content than fits in the height of the screen, the canvas cuts off when scrolling down. This is expected. How can I modify the height property to have the canvas extend as far down as there is content on the page?

Answer №1

Here's a useful snippet:

    let canvas = document.getElementById("myCanvas");
    let context = canvas.getContext("2d");

    // Expanding the canvas to fill the entire screen
    canvas.height = document.getElementsByTagName('body')[0].scrollHeight;
    canvas.width = window.innerWidth;

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