Exam JavaScript-Developer-I Registration & JavaScript-Developer-I Valid Test Topics

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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q119-Q124):

NEW QUESTION # 119
Refer to the code below:
For (let number =2: number <= S; number += 1) ( // insert code statement here The developer needs to insert a code statement in the location shown. The code statement has these requirements:
1. Does not require an import
2. Logs an error when the Boolean statement evaluates to false
3. Works In both the browser and Node.js
Which statement meet these requirements?

Answer: C


NEW QUESTION # 120
Refer to the code snippet:
Function getAvailabilityMessage(item) {
If (getAvailability(item)){
Var msg ="Username available";
}
Return msg;
}
A developer writes this code to return a message to user attempting to register a new
username. If the username is available, variable.
What is the return value of msg hen getAvailabilityMessage ("newUserName" ) is
executed and getAvailability("newUserName") returns false?

Answer: A


NEW QUESTION # 121
Given the code below:
const copy = JSON.stringify([ new String(' false '), new Bollean( false ), undefined ]); What is the value of copy?

Answer: D


NEW QUESTION # 122
Refer to the code below:

What is the output if this function when called with an empty array?

Answer: B


NEW QUESTION # 123
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?

Answer: D

Explanation:


NEW QUESTION # 124
......

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