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function Person(){
Person.prototype.name = 'Jimmy';
Person.prototype.age = 29;
Person.prototype.job = 'Teacher';
Person.prototype.sayName = function(){
alert(this.name);
}
}
Person();
var keys = Object.keys(Person.prototype);
alert(keys)
<script>
function Person() {
Person.prototype.name = 'Jimmy';
Person.prototype.age = 29;
Person.prototype.job = 'Teacher';
Person.prototype.sayName = function () {
alert(this.name);
}
}
Person();
var keys = Object.keys(Person.prototype);
alert(keys)
</script>
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