Salesforce Javascript Developer I Salesforce Certified JavaScript Developer I Exam Practice Test

Refer to the following code:

What is the output of line 11?

Refer tofollowing code:

class Vehicle {

constructor(plate) {

This.plate =plate;

}

}

Class Truck extends Vehicle {

constructor(plate, weight) {

//Missing code

This.weight = weight;

}

displayWeight() {

console.log('The truck ${this.plate} has a weight of${this.weight} lb.');}}

Let myTruck = new Truck('123AB', 5000);

myTruck.displayWeight();

Which statement should be added to line 09 for the code to display 'The truck 123AB has a

weight of 5000lb.'?

Refer to the code below:

01 let car1 = new promise((_, reject) =>

02 setTimeout(reject, 2000, ''Car 1 crashed in''));

03 let car2 = new Promise(resolve => setTimeout(resolve, 1500, ''Car 2

completed''));

04 let car3 = new Promise(resolve => setTimeout (resolve, 3000, ''Car 3

Completed''));

05 Promise.race([car1, car2, car3])

06 .then(value => (

07 let result = $(value) the race. `;

08 ))

09 .catch( arr => (

10 console.log(''Race is cancelled.'', err);

11 ));

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

Given the code below:

const delay = async delay =>{

return new Promise((resolve,reject)=>{

console.log(1);

setTimeout(resolve,deleay);

});

};

const callDelay =async ()=>{

console.log(2);

const yup = await delay(1000);

console.log(3);

}

console.log(4);

callDelay();

console.log(5);

What is logged to the console?

A developer creates a genericfunction to log custom messages in the console. To do this,

the function below is implemented.

01 function logStatus(status){

02 console./*Answer goes here*/{'Item status is: %s', status};

03 }

Which three console logging methods allow the use of string substitution in line 02?

At Universal Containers, every team has its own way of copying JavaScript objects. The

code

Snippet shows an implementation from one team:

Function Person() {

this.firstName = ''John'';

this.lastName = 'Doe';

This.name =() => (

console.log('Hello $(this.firstName) $(this.firstName)');

)}

Const john = new Person ();

Const dan =JSON.parse(JSON.stringify(john));

dan.firstName ='Dan';

dan.name();

What is the Output of the code execution?

Given the HTML below:

Which statement adds the priority-account css class to the Applied Shipping row?