Merge pull request #2083 from sthuber90/backward-browser-compatability

Backward browser compatability

CHANGELOG.md

@@ -23,6 +23,7 @@ _This release is scheduled to be released on 2020-10-01._
 
 ### Fixed
 
+- Fix backward compatibility issues for Safari < 11. [#1985](https://github.com/MichMich/MagicMirror/issues/1985)
 - Fix the use of "maxNumberOfDays" in the module "weatherforecast depending on the endpoint (forecast/daily or forecast)". [#2018](https://github.com/MichMich/MagicMirror/issues/2018)
 - Fix calendar display. Account for current timezone. [#2068](https://github.com/MichMich/MagicMirror/issues/2068)
 - Fix logLevel being set before loading config.

js/logger.js

@@ -19,7 +19,7 @@
 		root.Log = factory(root.config);
 	}
 })(this, function (config) {
-	let logLevel = {
+	const logLevel = {
 		info: Function.prototype.bind.call(console.info, console),
 		log: Function.prototype.bind.call(console.log, console),
 		error: Function.prototype.bind.call(console.error, console),

js/main.js

@@ -42,7 +42,7 @@ var MM = (function () {
 			dom.appendChild(moduleHeader);
 
 			if (typeof module.getHeader() === "undefined" || module.getHeader() !== "") {
-				moduleHeader.style = "display: none;";
+				moduleHeader.style.display = "none;";
 			}
 
 			var moduleContent = document.createElement("div");
@@ -216,7 +216,11 @@ var MM = (function () {
 		contentWrapper[0].appendChild(newContent);
 
 		headerWrapper[0].innerHTML = newHeader;
-		headerWrapper[0].style = headerWrapper.length > 0 && newHeader ? undefined : "display: none;";
+		if (headerWrapper.length > 0 && newHeader) {
+			delete headerWrapper[0].style;
+		} else {
+			headerWrapper[0].style.display = "none";
+		}
 	};
 
 	/* hideModule(module, speed, callback)