Title: JavaScript-Developer-I Best Preparation Materials & JavaScript-Developer-I P [Print This Page] Author: leotayl543 Time: 4 hour before Title: JavaScript-Developer-I Best Preparation Materials & JavaScript-Developer-I P 2026 Latest ExamDumpsVCE JavaScript-Developer-I PDF Dumps and JavaScript-Developer-I Exam Engine Free Share: https://drive.google.com/open?id=1IRpa7Ip0knrLMMxq24TcY_aSlg3BTznm
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Salesforce JavaScript-Developer-I Exam is designed to test a candidate's knowledge of JavaScript programming concepts and their ability to develop custom applications using the Salesforce Lightning Platform. JavaScript-Developer-I exam is an essential step towards becoming a Salesforce Certified JavaScript Developer I and is recognized globally as a valuable credential for developers who want to specialize in building complex, scalable, and customizable applications on the Salesforce platform.
JavaScript-Developer-I Practice Test Online | Test JavaScript-Developer-I Engine VersionOur experts generalize the knowledge of the exam into our JavaScript-Developer-I exam materials showing in three versions. PDF version of JavaScript-Developer-I study questions - support customers' printing request, and allow you to have a print and practice in papers. Software version of JavaScript-Developer-I learning guide - supporting simulation test system. App/online version of mock quiz - Being suitable to all kinds of equipment or digital devices, and you can review history and performance better. And you can choose the favorite one. Salesforce Certified JavaScript Developer I Exam Sample Questions (Q113-Q118):NEW QUESTION # 113
Universal Containers recently its new landing page to host crowd-function campaign. The page uses an external library to display some third-party ads. Once the page is fully loaded, It creates more than 50 new HTML items placed randomly inside the DOM, like the one in the code below.
All the elements included the same ad-library-item class. They are hidden by default, and they are randomly displayed while the user navigation through the page.
Tired of all the ads, what can the developer do to temporarily and quickly remove them?
A. Use the browser console to execute a script that removes all the elements containing the class ad-library-item.
B. Use the browser console to execute a script that prevents the load event to be fired.
C. Use the DOM inspector to prevent the load event to be fired.
D. Use the DOM inspector to remove all the elements containing the call ad-library -item.
Answer: A
NEW QUESTION # 114
A developer is required to write a function that calculates the sum of elements in an array but is getting undefinedevery time the code is executed. The developer needs to find what is missing in the code below.
Const sumFunction = arr => {
Return arr.reduce((result, current) => {
//
Result += current;
//
), 10);
);
Which option makes the code work as expected?
A. Replace line 03 with if(arr.length == 0 ) ( return 0; )
B. Replace line02 with return arr.map(( result, current) => (
C. Replace line 05 with return result;
D. Replace line 04 with result = result +current;
Answer: C
NEW QUESTION # 115
A developer is setting up a new Node.js server with a client library that is built using events and callbacks.
The library:
* Will establish a web socket connection and handle receipt of messages to the server
* Will be imported with require, and made available with a variable called we.
The developer also wants to add error logging if a connection fails.
Given this info, which code segment shows the correct way to set up a client with two events that listen at execution time?
A. ws.on ('connect', ( ) => { console.log('connected to client'); }}; ws.on('error', (error) => { console.log('ERROR' , error); }};
B. try{
ws.connect (( ) => {
console.log('connected to client'); });
C. ws.on ('connect', ( ) => {
console.log('connected to client'); ws.on('error', (error) => { console.log('ERROR' , error); });
});
D. ws.connect (( ) => {
console.log('connected to client'); }).catch((error) => { console.log('ERROR' , error); }};
NEW QUESTION # 116
Refer to the code below:
const event = new CustomEvent(
//Missing Code
);
obj.dispatchEvent(event);
A developer needs to dispatch a custom event called update to send information about recordId.
Which two options could a developer insert at the placeholder in line 02 to achieve this?
Choose 2 answers
NEW QUESTION # 117
Refer to the code below:
Const pi = 3.1415326,
What is the data type of pi?
A. Double
B. Decimal
C. Float
D. Number
Answer: D
NEW QUESTION # 118
......
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