Make for loops more readable. Closes #88. Closes #83.

lib/json3.js

@@ -265,7 +265,11 @@
               }
             }
             // Manually invoke the callback for each non-enumerable property.
-            for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property));
+            for (length = dontEnums.length; property = dontEnums[--length];) {
+              if (hasProperty.call(object, property)) {
+                callback(property);
+              }
+            }
           };
         } else {
           // No bugs detected; use the standard `for...in` algorithm.
@@ -382,7 +386,7 @@
         };
 
         // For environments with `JSON.stringify` but buggy date serialization,
-        // we override the native `Date#toJSON` implementation with a 
+        // we override the native `Date#toJSON` implementation with a
         // spec-compliant one.
         if (has("json-stringify") && !has("date-serialization")) {
           // Internal: the `Date#toJSON` implementation used to override the native one.
@@ -525,7 +529,13 @@
               } else if (className == arrayClass) {
                 // Convert the property names array into a makeshift set.
                 properties = {};
-                for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1));
+                for (var index = 0, length = filter.length, value; index < length;) {
+                  value = filter[index++];
+                  className = getClass.call(value);
+                  if (className == "[object String]" || className == "[object Number]") {
+                    properties[value] = 1;
+                  }
+                }
               }
             }
             if (width) {
@@ -534,7 +544,12 @@
                 // Convert the `width` to an integer and create a string containing
                 // `width` number of space characters.
                 if ((width -= width % 1) > 0) {
-                  for (whitespace = "", width > 10 && (width = 10); whitespace.length < width; whitespace += " ");
+                  if (width > 10) {
+                    width = 10;
+                  }
+                  for (whitespace = ""; whitespace.length < width;) {
+                    whitespace += " ";
+                  }
                 }
               } else if (className == stringClass) {
                 whitespace = width.length <= 10 ? width : width.slice(0, 10);
@@ -682,7 +697,12 @@
                   if (source.charCodeAt(Index) == 46) {
                     position = ++Index;
                     // Parse the decimal component.
-                    for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
+                    for (; position < length; position++) {
+                      charCode = source.charCodeAt(position);
+                      if (charCode < 48 || charCode > 57) {
+                        break;
+                      }
+                    }
                     if (position == Index) {
                       // Illegal trailing decimal.
                       abort();
@@ -700,7 +720,12 @@
                       Index++;
                     }
                     // Parse the exponential component.
-                    for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
+                    for (position = Index; position < length; position++) {
+                      charCode = source.charCodeAt(position);
+                      if (charCode < 48 || charCode > 57) {
+                        break;
+                      }
+                    }
                     if (position == Index) {
                       // Illegal empty exponent.
                       abort();
@@ -842,7 +867,9 @@
             // because its `Object#hasOwnProperty` implementation returns `false`
             // for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
             if (getClass.call(value) == arrayClass) {
-              for (length = value.length; length--; update(value, length, callback));
+              for (length = value.length; length--;) {
+                update(getClass, forOwn, value, length, callback);
+              }
             } else {
               forOwn(value, function (property) {
                 update(value, property, callback);