Examples of js.lang.NativeObject.deleteProperty()

js.lang.NativeObject.deleteProperty()

Remove property by key from an object. Returns false only if the property exists on the object itself, regardless of its prototypes, and cannot be deleted. It returns true in all other cases.
@param key A property key. @return A result.


                Object value = instance.setProperty(key, "value");
                assert instance.hasProperty(key) == true;
                assert instance.getProperty(key) == value;


                boolean result = instance.deleteProperty(key);
                assert instance.hasProperty(key) == false;
                assert instance.getProperty(key) == null;


                return result;
            }

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                assert set2.indexOf(key1) != -1;
                assert set2.indexOf(key2) != -1;
                assert set2.indexOf(key3) != -1;
                assert set2.indexOf("4") == -1;


                instance.deleteProperty(key1);
                instance.deleteProperty(key3);


                NativeArray<String> set3 = new NativeArray(instance.keys());
                assert set3.length() == 1;
                assert set3.indexOf(key1) == -1;

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                assert set2.indexOf(key2) != -1;
                assert set2.indexOf(key3) != -1;
                assert set2.indexOf("4") == -1;


                instance.deleteProperty(key1);
                instance.deleteProperty(key3);


                NativeArray<String> set3 = new NativeArray(instance.keys());
                assert set3.length() == 1;
                assert set3.indexOf(key1) == -1;
                assert set3.indexOf(key2) != -1;

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