Content script finds textareas

content_scripts/fairlang.js

@@ -1,4 +1,19 @@
-// Example code, taken from
-// https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Your_first_WebExtension
+// ---------------------------------
+// Content script to be run on pages
+// ---------------------------------
 
-document.body.style.border = "5px solid red";
+(function() {
+	// Only run this script once
+	if (window.hasRun) {
+		return;
+	}
+	window.hasRun = true;
+
+	// Search for all text areas
+	document.querySelectorAll("textarea").forEach(function(textarea) {
+		// Do something with it...
+		console.log(textarea);
+		textarea.style.border = "2px solid red";
+	});
+
+})();