diff --git a/mode/javascript/javascript.js b/mode/javascript/javascript.js
index 9c751d23f..66e5a308d 100644
--- a/mode/javascript/javascript.js
+++ b/mode/javascript/javascript.js
@@ -111,7 +111,7 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
       if (ch != ">" || !state.lexical || state.lexical.type != ">") {
         if (stream.eat("=")) {
           if (ch == "!" || ch == "=") stream.eat("=")
-        } else if (/[<>*+\-]/.test(ch)) {
+        } else if (/[<>*+\-|&?]/.test(ch)) {
           stream.eat(ch)
           if (ch == ">") stream.eat(ch)
         }