42 lines
1 KiB
JavaScript
42 lines
1 KiB
JavaScript
//// [instanceofOperator.ts]
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// Spec:
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// The instanceof operator requires the left operand to be of type Any or an object type, and the right
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// operand to be of type Any or a subtype of the ‘Function’ interface type. The result is always of the
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// Boolean primitive type.
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class Object { }
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var obj: Object;
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4 instanceof null;
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// Error and should be error
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obj instanceof 4;
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Object instanceof obj;
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// Error on left hand side
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null instanceof null;
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obj instanceof Object;
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undefined instanceof undefined;
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//// [instanceofOperator.js]
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// Spec:
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// The instanceof operator requires the left operand to be of type Any or an object type, and the right
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// operand to be of type Any or a subtype of the ‘Function’ interface type. The result is always of the
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// Boolean primitive type.
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var Object = (function () {
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function Object() {
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}
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return Object;
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})();
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var obj;
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4 instanceof null;
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obj instanceof 4;
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Object instanceof obj;
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null instanceof null;
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obj instanceof Object;
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undefined instanceof undefined;
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