Free Salesforce DEX602 Exam Questions
Absolute Free DEX602 Exam Practice for Comprehensive Preparation
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Salesforce DEX602 Exam Questions
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Provided By: Salesforce
- Exam: Program Lightning Web Components
- Certification: Javascript Developer
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Total Questions: 217
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Updated On: Jul 24, 2026
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Rated: 4.9 |
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Online Users: 434
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Question 1
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Refer to the code below:let timeFunction =() => {console.log('Timer called.'');};let timerId = setTimeout (timedFunction, 1000);Which statement allows a developer to cancel the scheduled timed function?
Answer: C
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Question 2
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Which javascript methods can be used to serialize an object into a string and deserializea JSON string into an object, respectively?
Answer: A
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Question 3
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A developer is creating a simple webpage with a button. When a user clicks this buttonfor the first time, a message is displayed.The developer wrote the JavaScript code below, but something is missing. Themessage gets displayed every time a user clicks the button, instead of just the first time.01 function listen(event) {02 alert ( 'Hey! I am John Doe') ;03 button.addEventListener ('click', listen);Which two code lines make this code work as required?Choose 2 answers
Answer: C,D
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Question 4
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Refer to HTML below:This card is smaller.The width and height of this card is determined by itscontents.Which expression outputs the screen width of the element with the ID card-01?
Answer: A
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Question 5
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Given the code below:01 function GameConsole (name) {02 this.name = name;03 }0405 GameConsole.prototype.load = function(gamename) {06 console.log( ` $(this.name) is loading a game : $(gamename) ...`);07 )08 function Console 16 Bit (name) {09 GameConsole.call(this, name) ;10 }11 Console16bit.prototype = Object.create ( GameConsole.prototype) ;12 //insert code here13 console.log( ` $(this.name) is loading a cartridge game : $(gamename) ...`);14 }15 const console16bit = new Console16bit(' SNEGeneziz ');16 console16bit.load(' Super Nonic 3x Force ');What should a developer insert at line 15 to output the following message using themethod ?> SNEGeneziz is loading a cartridge game: Super Monic 3x Force . . .
Answer: B
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