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Last active December 11, 2015 03:19
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Object.keys()
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gistfile1.js
function Person(name, age) {
this.name = name;
this.age = age;
}
Person.prototype.sayHi = function() {
console.log('Hi')
};
var P1 = new Person('Tom', '20');
var pKeys = Object.keys(P1);
console.log(pKeys); //[ 'name', 'age' ]
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