diff --git a/modules/juce_core/javascript/juce_Javascript.cpp b/modules/juce_core/javascript/juce_Javascript.cpp
index 5398e0ccc4..bbcedb7bae 100644
--- a/modules/juce_core/javascript/juce_Javascript.cpp
+++ b/modules/juce_core/javascript/juce_Javascript.cpp
@@ -1561,6 +1561,7 @@ struct JavascriptEngine::RootObject   : public DynamicObject
             setMethod ("log",       Math_log);              setMethod ("log10",     Math_log10);
             setMethod ("exp",       Math_exp);              setMethod ("pow",       Math_pow);
             setMethod ("sqr",       Math_sqr);              setMethod ("sqrt",      Math_sqrt);
+            setMethod ("ceil",      Math_ceil);             setMethod ("floor",     Math_floor);
         }
 
         static var Math_pi        (Args)   { return double_Pi; }
@@ -1593,6 +1594,8 @@ struct JavascriptEngine::RootObject   : public DynamicObject
         static var Math_pow       (Args a) { return pow   (getDouble (a, 0), getDouble (a, 1)); }
         static var Math_sqr       (Args a) { double x = getDouble (a, 0); return x * x; }
         static var Math_sqrt      (Args a) { return std::sqrt  (getDouble (a, 0)); }
+        static var Math_ceil      (Args a) { return std::ceil  (getDouble (a, 0)); }
+        static var Math_floor     (Args a) { return std::floor (getDouble (a, 0)); }
 
         static Identifier getClassName()   { static const Identifier i ("Math"); return i; }
         template <typename Type> static Type sign (Type n) noexcept  { return n > 0 ? (Type) 1 : (n < 0 ? (Type) -1 : 0); }