BTW, DOWNLOAD part of It-Tests JS-Dev-101 dumps from Cloud Storage: https://drive.google.com/open?id=1eucu5NE0C0UeIG3SURQN6d8LawyDvtMc
Our JS-Dev-101 vce braindumps are the best preparation materials for the certification exam and the guarantee of clearing exam quickly with less effort. You can find latest JS-Dev-101 test answers and questions in our pass guide and the detailed explanations will help you understand the content easier. Our experts check the updating of JS-Dev-101 free demo to ensure the accuracy of our dumps and create the pass guide based on the latest information.
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
>> Study JS-Dev-101 Material <<
You should not register for the Salesforce Salesforce Certified JavaScript Developer - Multiple Choice certification exam without proper preparation. Passing the Salesforce Certified JavaScript Developer - Multiple Choice exam is quite a challenging task. This difficult task becomes easier if you use valid Salesforce JS-Dev-101 Exam Dumps of It-Tests. Don't forget that the Salesforce Certified JavaScript Developer - Multiple Choice (JS-Dev-101) test registration fee is hefty and your money will go to waste if you don't crack this exam.
NEW QUESTION # 108
A class was written to represent regular items and sale items. Code:
01 let regItem = new Item('Scarf', 55);
02 let saleItem = new SaleItem('Shirt', 80, .1);
03 Item.prototype.description = function() { return 'This is a ' + this.name; }
04 console.log(regItem.description());
05 console.log(saleItem.description());
06
07 SaleItem.prototype.description = function() { return 'This is a discounted ' + this.name; }
08 console.log(regItem.description());
09 console.log(saleItem.description());
What is the output?
Answer: C
Explanation:
________________________________________
Comprehensive and Detailed Explanation From Exact Extract JavaScript Knowledge At line 03, the developer assigns:
Item.prototype.description = function() { return 'This is a ' + this.name; } This affects all objects whose prototype chain includes Item.prototype.
regItem inherits from Item → gets this method.
saleItem, as an instance of SaleItem, also inherits Item.prototype (since SaleItem uses prototype inheritance from Item), so it also has this method at this moment.
Outputs at lines 04 and 05:
regItem.description() → "This is a Scarf"
saleItem.description() → "This is a Shirt"
At line 07, the developer overrides the method on SaleItem.prototype:
SaleItem.prototype.description = function() {
return 'This is a discounted ' + this.name;
}
From this point:
regItem still uses the Item.prototype version
saleItem uses the overridden SaleItem.prototype version
Outputs at lines 08 and 09:
regItem.description() → "This is a Scarf"
saleItem.description() → "This is a discounted Shirt"
Combining all results:
This is a Scarf
This is a Shirt
This is a Scarf
This is a discounted Shirt
This matches option B.
________________________________________
JavaScript Knowledge Reference (text-only)
Objects created from constructor functions use prototype chaining.
Overriding a subclass prototype method does not affect the parent class prototype.
Instances inherit the most specific version of the method on their prototype chain.
NEW QUESTION # 109
Refer to the code below:
Const myFunction = arr => {
Return arr.reduce((result, current) =>{
Return result = current;
}, 10};
}
What is the output of this function when called with an empty array ?
Answer: D
NEW QUESTION # 110
A class was written to represent regular items and sale items. Code:
01 let regItem = new Item('Scarf', 55);
02 let saleItem = new SaleItem('Shirt', 80, .1);
03 Item.prototype.description = function() { return 'This is a ' + this.name; }
04 console.log(regItem.description());
05 console.log(saleItem.description());
06
07 SaleItem.prototype.description = function() { return 'This is a discounted ' + this.name; }
08 console.log(regItem.description());
09 console.log(saleItem.description());
What is the output?
Answer: C
Explanation:
At line 03, the developer assigns:
Item.prototype.description = function() { return 'This is a ' + this.name; } This affects all objects whose prototype chain includes Item.prototype.
regItem inherits from Item → gets this method.
saleItem, as an instance of SaleItem, also inherits Item.prototype (since SaleItem uses prototype inheritance from Item), so it also has this method at this moment.
Outputs at lines 04 and 05:
regItem.description() → "This is a Scarf"
saleItem.description() → "This is a Shirt"
At line 07, the developer overrides the method on SaleItem.prototype:
SaleItem.prototype.description = function() {
return 'This is a discounted ' + this.name;
}
From this point:
regItem still uses the Item.prototype version
saleItem uses the overridden SaleItem.prototype version
Outputs at lines 08 and 09:
regItem.description() → "This is a Scarf"
saleItem.description() → "This is a discounted Shirt"
Combining all results:
This is a Scarf
This is a Shirt
This is a Scarf
This is a discounted Shirt
This matches option B.
JavaScript Knowledge Reference (text-only)
Objects created from constructor functions use prototype chaining.
Overriding a subclass prototype method does not affect the parent class prototype.
Instances inherit the most specific version of the method on their prototype chain.
NEW QUESTION # 111
Given the code below:
Which method can be used to provide a visual representation of the list of users and to allow sorting by the name or email attribute?
Answer: B
NEW QUESTION # 112
What are two unique features of functions defined with a fat arrow as compared to normal function definition?
Choose 2 answers
Answer: A,C
NEW QUESTION # 113
......
Our valid JS-Dev-101 practice questions are created according to the requirement of the certification center based on the real questions. Our team always checked and revised JS-Dev-101 dumps pdf to ensure the accuracy of our preparation study materials. We guarantee that our JS-Dev-101 Exam Prep is cost-efficient and affordable for most candidates who want to get certification quickly in their first try.
JS-Dev-101 Top Exam Dumps: https://www.it-tests.com/JS-Dev-101.html
What's more, part of that It-Tests JS-Dev-101 dumps now are free: https://drive.google.com/open?id=1eucu5NE0C0UeIG3SURQN6d8LawyDvtMc