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Salesforce JavaScript Developer I Exam Dumps

Passcert new cracked Salesforce JavaScript Developer I Exam Dumps which contain many practice questions and answers and they can ensure you pass your exam easily.

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Salesforce JavaScript Developer I Exam Dumps

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  1. JavaScript Developer I JavaScript Developer I Dumps Dumps Salesforce Certified JavaScript Salesforce Certified JavaScript Developer I (WI21) Developer I (WI21) https://www.passcert.com/ https://www.passcert.com/JavaScript-Developer-I JavaScript-Developer-I.html .html

  2. Download Passcert valid JavaScript Developer I exam dumps to pass your JavaScript Developer I exam successfully Question 1 A developer writers the code below to calculate the factorial of a given number. Function factorial(number) A developer writers the code below to calculate the factorial of a given number. Function factorial(number) { { Return number + factorial(number -1); Return number + factorial(number -1); } } factorial(3); factorial(3); What is the result of executing line 04? What is the result of executing line 04? A. 0 A. 0 B. 6 B. 6 C. -Infinity C. -Infinity D. RuntimeError D. RuntimeError Answer: D Answer: D 2

  3. Download Passcert valid JavaScript Developer I exam dumps to pass your JavaScript Developer I exam successfully Question 2 developer wants to use a module named universalContainersLib and them call functions from it. developer wants to use a module named universalContainersLib and them call functions from it. How should a developer import every function from the module and then call the fuctions foo and bar? How should a developer import every function from the module and then call the fuctions foo and bar? A. import A. import * * ad lib from ‘/path/universalContainersLib.js’; ad lib from ‘/path/universalContainersLib.js’; lib.foo(); lib.foo(); lib.bar(); lib.bar(); B. import (foo, bar) from ‘/path/universalContainersLib.js’; B. import (foo, bar) from ‘/path/universalContainersLib.js’; foo(); foo(); bar(); bar(); C. import all from ‘/path/universalContaineraLib.js’; universalContainersLib.foo(); universalContainersLib.bar(); C. import all from ‘/path/universalContaineraLib.js’; universalContainersLib.foo(); universalContainersLib.bar(); D. import D. import * * from ‘/path/universalContaineraLib.js’; from ‘/path/universalContaineraLib.js’; universalContainersLib.foo(); universalContainersLib.foo(); universalContainersLib.bar(); universalContainersLib.bar(); Answer: A Answer: A 3

  4. Download Passcert valid JavaScript Developer I exam dumps to pass your JavaScript Developer I exam successfully Question 3 A developer creates a generic function to log custom messages in the console. A developer creates a generic function to log custom messages in the console. To do this, the function below is implemented. To do this, the function below is implemented. 01 function logStatus(status){ 01 function logStatus(status){ 02 console./ 02 console./* *Answer goes here Answer goes here* */{‘Item status is: %s’, status}; /{‘Item status is: %s’, status}; 03 } 03 } Which three console logging methods allow the use of string substitution in line 02? Which three console logging methods allow the use of string substitution in line 02? A. Assert A. Assert B. Log B. Log C. Message C. Message D. Info D. Info E. Error E. Error Answer: A,D Answer: A,D 4

  5. Download Passcert valid JavaScript Developer I exam dumps to pass your JavaScript Developer I exam successfully Question 4 A developer has code that calculates a restaurant bill, but generates incorrect answers while testing the code: A developer has code that calculates a restaurant bill, but generates incorrect answers while testing the code: function calculateBill ( items ) { function calculateBill ( items ) { let total = 0; let total = 0; total += findSubTotal(items); total += findSubTotal(items); total += addTax(total); total += addTax(total); total += addTip(total); total += addTip(total); return total; return total; } } Which option allows the developer to step into each function execution within calculateBill? Which option allows the developer to step into each function execution within calculateBill? A. Using the debugger command on line 05. A. Using the debugger command on line 05. B. Using the debugger command on line 03 B. Using the debugger command on line 03 C. Calling the console.trace (total) method on line 03. C. Calling the console.trace (total) method on line 03. D. Wrapping findSubtotal in a console.log() method. D. Wrapping findSubtotal in a console.log() method. Answer: A Answer: A 5

  6. Download Passcert valid JavaScript Developer I exam dumps to pass your JavaScript Developer I exam successfully Question 5 A developer is wondering whether to use, Promise.then or Promise.catch, especially when a Promise throws A developer is wondering whether to use, Promise.then or Promise.catch, especially when a Promise throws an error? an error? Which two promises are rejected? Which two promises are rejected? Which 2 are correct? Which 2 are correct? A. Promise.reject(‘cool error here’).then(error => console.error(error)); A. Promise.reject(‘cool error here’).then(error => console.error(error)); B. Promise.reject(‘cool error here’).catch(error => console.error(error)); B. Promise.reject(‘cool error here’).catch(error => console.error(error)); C. New Promise((resolve, reject) => (throw ‘cool error here’}).catch(error => console.error(error)) ; C. New Promise((resolve, reject) => (throw ‘cool error here’}).catch(error => console.error(error)) ; D. New Promise(() => (throw ‘cool error here’}).then(null, error => console.error(error))); D. New Promise(() => (throw ‘cool error here’}).then(null, error => console.error(error))); Answer: B,C Answer: B,C 6

  7. Download Passcert valid JavaScript Developer I exam dumps to pass your JavaScript Developer I exam successfully Question 6 developer removes the HTML class attribute from the checkout button, so now it is simply: developer removes the HTML class attribute from the checkout button, so now it is simply: <button>Checkout</button>. <button>Checkout</button>. There is a test to verify the existence of the checkout button, however it looks for a button with class= There is a test to verify the existence of the checkout button, however it looks for a button with class= “blue”. The test fails because no such button is found. “blue”. The test fails because no such button is found. Which type of test category describes this test? Which type of test category describes this test? A. True positive A. True positive B. True negative B. True negative C. False positive C. False positive D. False negative D. False negative Answer: D Answer: D 7

  8. Download Passcert valid JavaScript Developer I exam dumps to pass your JavaScript Developer I exam successfully Question 7 A developer creates an object where its properties should be immutable and prevent A developer creates an object where its properties should be immutable and prevent properties from being added or modified. properties from being added or modified. Which method should be used to execute this business requirement? Which method should be used to execute this business requirement? A. Object.const() A. Object.const() B. Object.eval() B. Object.eval() C. Object.lock() C. Object.lock() D. Object.freeze() D. Object.freeze() Answer: D Answer: D 8

  9. Download Passcert valid JavaScript Developer I exam dumps to pass your JavaScript Developer I exam successfully Question 8 Refer to the code below: Refer to the code below: Const searchTest = ‘Yay! Salesforce is amazing!” ; Const searchTest = ‘Yay! Salesforce is amazing!” ; Let result1 = searchText.search(/sales/i); Let result1 = searchText.search(/sales/i); Let result 21 = searchText.search(/sales/i); Let result 21 = searchText.search(/sales/i); console.log(result1); console.log(result1); console.log(result2); console.log(result2); After running this code, which result is displayed on the console? After running this code, which result is displayed on the console? A. > true > false A. > true > false B. > 5 >undefined B. > 5 >undefined B. > 5 > -1 B. > 5 > -1 C. > 5 > 0 C. > 5 > 0 Answer: B Answer: B 9

  10. Download Passcert valid JavaScript Developer I exam dumps to pass your JavaScript Developer I exam successfully Question 9 The developer wants to test the array shown: The developer wants to test the array shown: const arr = Array(5).fill(0) const arr = Array(5).fill(0) Which two tests are the most accurate for this array? Choose 2 answers: Which two tests are the most accurate for this array? Choose 2 answers: A. console.assert( arr.length === 5 ); A. console.assert( arr.length === 5 ); B. arr.forEach(elem => console.assert(elem === 0)) ; B. arr.forEach(elem => console.assert(elem === 0)) ; C. console.assert(arr[0] === 0 && arr[ arr.length] === 0); C. console.assert(arr[0] === 0 && arr[ arr.length] === 0); D. console.assert (arr.length >0); D. console.assert (arr.length >0); Answer: A,B Answer: A,B 10

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