1246602
Descripción
Test por Pulkit Singhal, actualizado hace más de 1 año
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Creado por Pulkit Singhal
hace más de 9 años
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|
Pregunta 1
Pregunta
function Cat(name, color) {
this.name = name;
this.color = color;
}
Cat.prototype.age = 3;
var fluffy = new Cat("Fluffy", "White");
var scratchy = new Cat("Scratchy", "Black");
What is the value for fluffy.age and scratch.age?
Respuesta
-
3
-
null
-
undefined
-
0
Pregunta 2
Pregunta
Given that a function’s prototype is just an object, then what would happen if we started changing the properties of a function’s prototype after we created objects from it?
function Cat(name, color) {
this.name = name;
this.color = color;
}
Cat.prototype.age = 3;
var fluffy = new Cat("Fluffy", "White");
var scratchy = new Cat("Scratchy", "Black");
Cat.prototype.age = 4;
What is the value for fluffy.age and scratchy.age?
Respuesta
-
4
-
3
-
null
-
undefined
-
0
Pregunta 3
Pregunta
function Cat(name, color) {
this.name = name;
this.color = color;
}
Cat.prototype.age = 3;
var fluffy = new Cat("Fluffy", "White");
var scratchy = new Cat("Scratchy", "Black");
Cat.prototype = {age: 4};
What is fluffy.age and scratchy.age?
Respuesta
-
4
-
3
-
null
-
undefined
-
0
Pregunta 4
Pregunta
function Cat(name, color) {
this.name = name;
this.color = color;
}
Cat.prototype.age = 3;
var fluffy = new Cat("Fluffy", "White");
var scratchy = new Cat("Scratchy", "Black");
Cat.prototype = {age: 4};
var muffin = new Cat("Muffin", "Brown");
What is muffin.age?
Respuesta
-
4
-
3
-
null
-
undefined
-
0
Pregunta 5
Pregunta
function Cat(name, color) {
this.name = name;
this.color = color;
}
Cat.prototype.age = 3;
var fluffy = new Cat("Fluffy", "White");
var scratchy = new Cat("Scratchy", "Black");
fluffy.age = 4;
What is fluffy.age and scratchy.age?
Respuesta
-
fluffy.age; 4 scratchy.age; 3
-
fluffy.age; 4 scratchy.age; 4
-
fluffy.age; 3 scratchy.age; 3
Pregunta 6
Pregunta
function Cat(name, color) {
this.name = name;
this.color = color;
}
Cat.prototype.age = 3;
var fluffy = new Cat("Fluffy", "White");
var scratchy = new Cat("Scratchy", "Black");
fluffy.__proto__.age = 4;
What is fluffy.age and scratchy.age?
Respuesta
-
fluffy.age; 4 scratchy.age; 3
-
fluffy.age; 3 scratchy.age; 3
-
fluffy.age; 4 scratchy.age; 4
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