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Salesforce CRT-600 Exam

Prepare for your JavaScript Developer I Certification Exam

Total Questions: 224

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Salesforce CRT-600 Questions

Q1.

A developer has two ways to write a function:

Option A:

function Monster() {

This.growl = () => {

Console.log (''Grr!'');

}

}

Option B:

function Monster() {};

Monster.prototype.growl =() => {

console.log(''Grr!'');

}

After deciding on an option, the developer creates 1000 monster objects.

How many growl methods are created with Option A Option B?

Q2.

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 ?

Q3.

A developer implements and calls the following code when an application state change occurs:

Const onStateChange =innerPageState) => {

window.history.pushState(newPageState, ' ', null);

}

If the back button is clicked after this method is executed, what can a developer expect?

Q4.

Refer to the following code:

<html lang=''en''>

<body>

<button id =''myButton''>CLick me<button>

</body>

<script>

function displayMessage(ev) {

ev.stopPropagation();

console.log('Inner message.');

}

const elem = document.getElementById('myButton');

elem.addEventListener('click' , displayMessage);

</script>

</html>

What will the console show when the button is clicked?

Q5.

Given the following code:

Counter = 0;

const logCounter = () => {

console.log(counter);

);

logCounter();

setTimeout(logCOunter, 1100);

setInterval(() => {

Counter++

logCounter();

}, 1000);

What is logged by the first four log statements?

Solutions:
Question: 1 Answer: B
Question: 2 Answer: C
Question: 3 Answer: B
Question: 4 Answer: D
Question: 5 Answer: C

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