diff --git a/dlls/jscript/array.c b/dlls/jscript/array.c
index 1ced39e2ca9..1268d59638b 100644
--- a/dlls/jscript/array.c
+++ b/dlls/jscript/array.c
@@ -166,7 +166,7 @@ static HRESULT concat_array(DispatchEx *array, ArrayInstance *obj, DWORD *len,
     HRESULT hres;
 
     for(i=0; i < obj->length; i++) {
-        hres = jsdisp_propget_idx(&obj->dispex, i, &var, ei, caller);
+        hres = jsdisp_get_idx(&obj->dispex, i, &var, ei, caller);
         if(hres == DISP_E_UNKNOWNNAME)
             continue;
         if(FAILED(hres))
@@ -267,8 +267,11 @@ static HRESULT array_join(script_ctx_t *ctx, DispatchEx *array, DWORD length, co
         return E_OUTOFMEMORY;
 
     for(i=0; i < length; i++) {
-        hres = jsdisp_propget_idx(array, i, &var, ei, caller);
-        if(FAILED(hres))
+        hres = jsdisp_get_idx(array, i, &var, ei, caller);
+        if(hres == DISP_E_UNKNOWNNAME) {
+            hres = S_OK;
+            continue;
+        } else if(FAILED(hres))
             break;
 
         if(V_VT(&var) != VT_EMPTY && V_VT(&var) != VT_NULL)
@@ -397,7 +400,7 @@ static HRESULT Array_pop(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, DISPPARA
     }
 
     length--;
-    hres = jsdisp_propget_idx(jsthis, length, &val, ei, caller);
+    hres = jsdisp_get_idx(jsthis, length, &val, ei, caller);
     if(SUCCEEDED(hres)) {
         hres = jsdisp_delete_idx(jsthis, length);
     } else if(hres == DISP_E_UNKNOWNNAME) {
@@ -472,11 +475,11 @@ static HRESULT Array_reverse(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, DISP
     for(k=0; k<length/2; k++) {
         l = length-k-1;
 
-        hres1 = jsdisp_propget_idx(jsthis, k, &v1, ei, sp);
+        hres1 = jsdisp_get_idx(jsthis, k, &v1, ei, sp);
         if(FAILED(hres1) && hres1!=DISP_E_UNKNOWNNAME)
             return hres1;
 
-        hres2 = jsdisp_propget_idx(jsthis, l, &v2, ei, sp);
+        hres2 = jsdisp_get_idx(jsthis, l, &v2, ei, sp);
         if(FAILED(hres2) && hres2!=DISP_E_UNKNOWNNAME) {
             VariantClear(&v1);
             return hres2;
@@ -540,14 +543,14 @@ static HRESULT Array_shift(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, DISPPA
         return S_OK;
     }
 
-    hres = jsdisp_propget_idx(jsthis, 0, &ret, ei, caller);
+    hres = jsdisp_get_idx(jsthis, 0, &ret, ei, caller);
     if(hres == DISP_E_UNKNOWNNAME) {
         V_VT(&ret) = VT_EMPTY;
         hres = S_OK;
     }
 
     for(i=1; SUCCEEDED(hres) && i<length; i++) {
-        hres = jsdisp_propget_idx(jsthis, i, &v, ei, caller);
+        hres = jsdisp_get_idx(jsthis, i, &v, ei, caller);
         if(hres == DISP_E_UNKNOWNNAME)
             hres = jsdisp_delete_idx(jsthis, i-1);
         else if(SUCCEEDED(hres))
@@ -622,7 +625,7 @@ static HRESULT Array_slice(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, DISPPA
         return hres;
 
     for(idx=start; idx<end; idx++) {
-        hres = jsdisp_propget_idx(jsthis, idx, &v, ei, sp);
+        hres = jsdisp_get_idx(jsthis, idx, &v, ei, sp);
         if(hres == DISP_E_UNKNOWNNAME)
             continue;
 
@@ -755,8 +758,11 @@ static HRESULT Array_sort(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, DISPPAR
     vtab = heap_alloc_zero(length * sizeof(VARIANT));
     if(vtab) {
         for(i=0; i<length; i++) {
-            hres = jsdisp_propget_idx(jsthis, i, vtab+i, ei, caller);
-            if(FAILED(hres) && hres != DISP_E_UNKNOWNNAME) {
+            hres = jsdisp_get_idx(jsthis, i, vtab+i, ei, caller);
+            if(hres == DISP_E_UNKNOWNNAME) {
+                V_VT(vtab+i) = VT_EMPTY;
+                hres = S_OK;
+            } else if(FAILED(hres)) {
                 WARN("Could not get elem %d: %08x\n", i, hres);
                 break;
             }
@@ -908,7 +914,7 @@ static HRESULT Array_splice(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, DISPP
             return hres;
 
         for(i=0; SUCCEEDED(hres) && i < delete_cnt; i++) {
-            hres = jsdisp_propget_idx(jsthis, start+i, &v, ei, caller);
+            hres = jsdisp_get_idx(jsthis, start+i, &v, ei, caller);
             if(hres == DISP_E_UNKNOWNNAME)
                 hres = S_OK;
             else if(SUCCEEDED(hres))
@@ -925,7 +931,7 @@ static HRESULT Array_splice(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, DISPP
 
     if(add_args < delete_cnt) {
         for(i = start; SUCCEEDED(hres) && i < length-delete_cnt; i++) {
-            hres = jsdisp_propget_idx(jsthis, i+delete_cnt, &v, ei, caller);
+            hres = jsdisp_get_idx(jsthis, i+delete_cnt, &v, ei, caller);
             if(hres == DISP_E_UNKNOWNNAME)
                 hres = jsdisp_delete_idx(jsthis, i+add_args);
             else if(SUCCEEDED(hres))
@@ -936,7 +942,7 @@ static HRESULT Array_splice(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, DISPP
             hres = jsdisp_delete_idx(jsthis, i-1);
     }else if(add_args > delete_cnt) {
         for(i=length-delete_cnt; SUCCEEDED(hres) && i != start; i--) {
-            hres = jsdisp_propget_idx(jsthis, i+delete_cnt-1, &v, ei, caller);
+            hres = jsdisp_get_idx(jsthis, i+delete_cnt-1, &v, ei, caller);
             if(hres == DISP_E_UNKNOWNNAME)
                 hres = jsdisp_delete_idx(jsthis, i+add_args-1);
             else if(SUCCEEDED(hres))
diff --git a/dlls/jscript/dispex.c b/dlls/jscript/dispex.c
index 1b52ba49596..492623e18bb 100644
--- a/dlls/jscript/dispex.c
+++ b/dlls/jscript/dispex.c
@@ -1003,14 +1003,26 @@ HRESULT jsdisp_propget_name(DispatchEx *obj, const WCHAR *name, VARIANT *var, js
     return prop_get(obj, prop, &dp, var, ei, caller);
 }
 
-HRESULT jsdisp_propget_idx(DispatchEx *obj, DWORD idx, VARIANT *var, jsexcept_t *ei, IServiceProvider *caller)
+HRESULT jsdisp_get_idx(DispatchEx *obj, DWORD idx, VARIANT *var, jsexcept_t *ei, IServiceProvider *caller)
 {
-    WCHAR buf[12];
+    WCHAR name[12];
+    DISPPARAMS dp = {NULL, NULL, 0, 0};
+    dispex_prop_t *prop;
+    HRESULT hres;
 
     static const WCHAR formatW[] = {'%','d',0};
 
-    sprintfW(buf, formatW, idx);
-    return jsdisp_propget_name(obj, buf, var, ei, caller);
+    sprintfW(name, formatW, idx);
+
+    hres = find_prop_name_prot(obj, name, FALSE, &prop);
+    if(FAILED(hres))
+        return hres;
+
+    V_VT(var) = VT_EMPTY;
+    if(!prop)
+        return DISP_E_UNKNOWNNAME;
+
+    return prop_get(obj, prop, &dp, var, ei, caller);
 }
 
 HRESULT jsdisp_propget(DispatchEx *jsdisp, DISPID id, VARIANT *val, jsexcept_t *ei, IServiceProvider *caller)
diff --git a/dlls/jscript/function.c b/dlls/jscript/function.c
index d25fd0fc295..c7494cfce6c 100644
--- a/dlls/jscript/function.c
+++ b/dlls/jscript/function.c
@@ -374,8 +374,10 @@ static HRESULT array_to_args(script_ctx_t *ctx, DispatchEx *arg_array, jsexcept_
         return E_OUTOFMEMORY;
 
     for(i=0; i<length; i++) {
-        hres = jsdisp_propget_idx(arg_array, i, argv+i, ei, caller);
-        if(FAILED(hres)) {
+        hres = jsdisp_get_idx(arg_array, i, argv+i, ei, caller);
+        if(hres == DISP_E_UNKNOWNNAME)
+            V_VT(argv+i) = VT_EMPTY;
+        else if(FAILED(hres)) {
             while(i--)
                 VariantClear(argv+i);
             heap_free(argv);
diff --git a/dlls/jscript/jscript.h b/dlls/jscript/jscript.h
index 95f5028dd07..00688273de8 100644
--- a/dlls/jscript/jscript.h
+++ b/dlls/jscript/jscript.h
@@ -205,7 +205,7 @@ HRESULT jsdisp_propget(DispatchEx*,DISPID,VARIANT*,jsexcept_t*,IServiceProvider*
 HRESULT jsdisp_propput_name(DispatchEx*,const WCHAR*,VARIANT*,jsexcept_t*,IServiceProvider*);
 HRESULT jsdisp_propput_idx(DispatchEx*,DWORD,VARIANT*,jsexcept_t*,IServiceProvider*);
 HRESULT jsdisp_propget_name(DispatchEx*,LPCWSTR,VARIANT*,jsexcept_t*,IServiceProvider*);
-HRESULT jsdisp_propget_idx(DispatchEx*,DWORD,VARIANT*,jsexcept_t*,IServiceProvider*);
+HRESULT jsdisp_get_idx(DispatchEx*,DWORD,VARIANT*,jsexcept_t*,IServiceProvider*);
 HRESULT jsdisp_get_id(DispatchEx*,const WCHAR*,DWORD,DISPID*);
 HRESULT jsdisp_delete_idx(DispatchEx*,DWORD);