Salesforce JavaScript-Developer-I Formal Test, JavaScript-Developer-I Technical Training

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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q53-Q58):

NEW QUESTION # 53
The developer has a function that prints ''Hello'' to an input name. To test this, the developer created a function that returns world''.

What can the developer do to change the code to print ''Hello world''?

A. Change line 2 to console.log ( 'Hello', name () );
B. Change line 9 to sayhello (world () ;
C. Change line 7 to ) () ;
D. Change line 5 to function world () (

Answer: C

NEW QUESTION # 54
Refer to the code below:

What is the value of result when Promise. race executes?

A. Race is cancelled.
B. Car 3 completed the race
C. Car 1 crashed the race
D. Car 2 completed the race

Answer: C

NEW QUESTION # 55
Refer to the code snippet below:
Let array = [1, 2, 3, 4, 4, 5, 4, 4];
For (let i =0; i < array.length; i++)
if (array[i] === 4) {
array.splice(i, 1);
}
}
What is the value of array after the code executes?

A. [1, 2, 3, 5]
B. [1, 2, 3, 4, 5, 4, 4]
C. [1, 2, 3, 4, 4, 5, 4]
D. [1, 2, 3, 4, 5, 4]

Answer: C

Explanation:

NEW QUESTION # 56
Refer to code below:
Let a ='a';
Let b;
// b = a;
console.log(b);
What is displayed when the code executes?

A. Null
B. Undefined
C. ReferenceError: b is not defined
D. A

Answer: B

NEW QUESTION # 57
Refer to code below:
Function muFunction(reassign){
Let x = 1;
var y = 1;
if( reassign ) {
Let x= 2;
Var y = 2;
console.log(x);
console.log(y);}
console.log(x);
console.log(y);}
What is displayed when myFunction(true) is called?

A. 2 2 undefined undefined
B. 2 2 1 1
C. 2 2 2 2
D. 2 2 1 2

Answer: D

NEW QUESTION # 58
......

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