1 files changed, 29 insertions, 0 deletions
diff --git a/js/setTheme.js b/js/setTheme.js
new file mode 100644
index 0000000..41680b9
--- /dev/null
+++ b/js/setTheme.js
@@ -0,0 +1,29 @@
+function setTheme(theme) {
+	localStorage.setItem("theme",theme);
+	var   root      = document.querySelector(":root");
+	var   rootstyle = getComputedStyle(root);
+	const black     = rootstyle.getPropertyValue("--black");
+	const darkgrey  = rootstyle.getPropertyValue("--darkgrey");
+	const lightgrey = rootstyle.getPropertyValue("--lightgrey");
+	const white     = rootstyle.getPropertyValue("--white");
+	var   bodyColour;
+	var   backgroundColour;
+	var   foregroundColour;
+	if (theme === "dark") {
+		bodyColour       = black;
+		backgroundColour = darkgrey;
+		foregroundColour = white;
+	}
+	else if (theme === "light") {
+		bodyColour       = lightgrey;
+		backgroundColour = white;
+		foregroundColour = black;
+	}
+	else {
+		setTheme("dark");
+		return;
+	}
+	root.style.setProperty("--bodyColour",      bodyColour);
+	root.style.setProperty("--backgroundColour",backgroundColour);
+	root.style.setProperty("--foregroundColour",foregroundColour);
+}