38 lines
1.0 KiB
Plaintext
38 lines
1.0 KiB
Plaintext
js> load('testsrc/doctests/util.js');
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js> Object.isFrozen
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function isFrozen() { [native code for Object.isFrozen, arity=1] }
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js> expectTypeError(function() { Object.isFrozen() });
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js> [undefined, null, true, 1, 'hello'].forEach(function(value) {
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> expectTypeError(function() { Object.isFrozen(value) })
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> })
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js> Object.isFrozen({})
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false
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js> var obj = Object.preventExtensions({});
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js> Object.isFrozen(obj);
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true
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js> var obj = Object.defineProperty({}, 'a', {configurable:true, writable:false})
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js> var _ = Object.preventExtensions(obj);
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js> Object.isFrozen(obj);
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false
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js> var obj = Object.defineProperty({}, 'a', {configurable:false, writable:true})
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js> var _ = Object.preventExtensions(obj);
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js> Object.isFrozen(obj);
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false
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js> var obj = Object.defineProperty({}, 'a', {configurable:false, writable:false})
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js> var _ = Object.preventExtensions(obj);
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js> Object.isFrozen(obj);
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true
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js> var obj = Object.defineProperty({}, 'a', {configurable:false, set: function(){} })
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js> var _ = Object.preventExtensions(obj);
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js> Object.isFrozen(obj);
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true
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