Proper error handling

as-com · Aug 23, 2016 · 9d0eff0 · 9d0eff0
1 parent 6bedd74
commit 9d0eff0
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/scripts/frontend.php b/scripts/frontend.php
@@ -37,7 +37,7 @@ function katex_rubber() {
 	global $katex_using;
 	if ($katex_using) {
 	?>
-	<script>!function(){"use strict";var t=document.querySelectorAll("script[type='text/katex']");Array.prototype.forEach.call(t,function(t,e){var r={displayMode:"true"===t.getAttribute("data-display"),throwOnError:!1},a=document.createElement("span");katex.render(t.textContent,a,r),t.parentNode.replaceChild(a,t)})}();</script>
+	<script>!function(){"use strict";var t=document.querySelectorAll("script[type='text/katex']");Array.prototype.forEach.call(t,function(t,e){var r={displayMode:"true"===t.getAttribute("data-display"),throwOnError:!1},a=document.createElement("span");try{katex.render(t.textContent,a,r)}catch(o){t.style.color="red",t.textContent=o.message}t.parentNode.replaceChild(a,t)})}();</script>
 	<?php
 	}
 }

diff --git a/scripts/render-stub.js b/scripts/render-stub.js
@@ -7,7 +7,12 @@
 			throwOnError: false
 		};
 		var eq = document.createElement("span");
-		katex.render(el.textContent, eq, options);
+		try {
+			katex.render(el.textContent, eq, options);
+		} catch (e) {
+			el.style.color = "red";
+			el.textContent = e.message;
+		}
 		el.parentNode.replaceChild(eq, el);
 	});
 })();