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Introduction to Salesforce JavaScript Developer I Exam
The credential Salesforce Accredited JavaScript Developer I is meant for applicants who build JavaScript applications for the web stack on the front-end and/or back-end.This validates both key JavaScript expertise and functional skills for applicants, for example, Lightning Components Platform, and Lightning Web Component technology relevant to JavaScript. Lightning web elements are personalised HTML elements that are designed with traditional HTML and modern JavaScript.
The Salesforce JavaScript Developer I certification requires two parts: the multiple-choice test given by the JavaScript Developer I and the Superbadge Lightning Web Components. In any order, all these credentials can be accessed. A Salesforce Certified Javascript Developer I certification is immediately obtained by adding these two certificates. The qualification applicant for Salesforce JavaScript Accredited Developer I will use the JavaScript language to build front-end or back-end software in one or more frameworks. The applicant will plan, build and evaluate effective , safe and reusable solutions.
The candidate can use JavaScript-specific programming style patterns and can use CSS , HTML, and other languages for integrating JavaScript. With Lightning Web Components, any JavaScript developer can build on Salesforce easily. This means that millions of JavaScript developers around the world will code on Salesforce without learning anything new. Developers can create and deploy brand-new fast apps on Salesforce using the current Lightning Platform development services portfolio and the modern JavaScript language. Salesforce JavaScript Developer I Certificate from Salesforce is designed to help Salesforce partners, customers and employees working on JavaScript as well as the Lightning Component Platform, know-how and knowledge and creation of Lightning web components (LWC’s).
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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q145-Q150):
NEW QUESTION # 145
A developer wrote the following code:
01 let X = object.value;
02
03 try {
04 handleObjectValue(X);
05 } catch (error) {
06 handleError(error);
07 }
The developer has a getNextValue function to execute after handleObjectValue(), but
does not want to execute getNextValue() if an error occurs.
How can the developer change the code to ensure this behavior?
- A. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } then {
08 getNextValue();
09 } - B. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 }
08 getNextValue(); - C. 03 try {
04 handleObjectValue(x)
05 …………………… - D. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } finally {
08 getNextValue();
10 }
Answer: C
NEW QUESTION # 146
Refer to the HTML below:
Which JavaScript statement results in changing ” The Lion.”?
- A. document.querySelector(‘$main li.Tony’).innerHTML = ‘” The Lion ‘;
- B. document.querySelectorAll(‘$main $TONY’).innerHTML = ‘” The Lion
- C. document.querySelector(‘$main li:nth-child(2)’),innerHTML = ” The Lion. ‘;
- D. document.querySelector(‘$main li:second-child’).innerHTML = ” The Lion ‘;
Answer: B
NEW QUESTION # 147
Universal Containers recently launched its new landing page to host a crowd-funding 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 includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.
- A. Use the browser console to execute a script that prevents the load event to be fired.
- B. Use the DOM inspector to prevent the load event to be fired.
- C. Use the browser to execute a script that removes all the element containing the class ad-library-item.
- D. Use the DOM inspector to remove all the elements containing the class ad-library-item.
Answer: C
NEW QUESTION # 148
A developer wants to create an object from a function in the browser using the code
below:
Function Monster() { this.name = ‘hello’ };
Const z = Monster();
What happens due to lack of the new keyword on line 02?
- A. The z variable is assigned the correct object but this.name remains undefined.
- B. The z variable is assigned the correct object.
- C. Window.m is assigned the correct object.
- D. Window.name is assigned to ‘hello’ and the variable z remains undefined.
Answer: D
NEW QUESTION # 149
Refer to the code below:
Why does the function bar have access to variable =?
- A. Outer function’s scope
- B. Hoisting
- C. Inner function’s scope
- D. Prototype chain
Answer: C
NEW QUESTION # 150
……
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