Free Access Salesforce.JavaScript-Developer-I.v2023-05-15.q103 Practice Test (Page 5)

Question 16

Which code statement below correctly persists an objects in local Storage ?

A.const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.setItem(storageKey, JSON.stringify(jsObject));
}

B.const setLocalStorage = ( jsObject) => {
window.localStorage.connectObject(jsObject));
}

C.const setLocalStorage = ( jsObject) => {
window.localStorage.setItem(jsObject);
}

D.const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.persist(storageKey, jsObject);
}

Question 17

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.

B.Window.m is assigned the correct object.

C.The z variable is assigned the correct object but this.name remains undefined.

D.Window.name is assigned to 'hello' and the variable z remains undefined.

Question 18

Refer to the following code that imports a module named utils:
import (foo, bar) from '/path/Utils.js';
foo() ;
bar() ;
Which two implementations of Utils.js export foo and bar such that the code above runs without error?
Choose 2 answers

A.Export default class {
foo() { return 'foo' ; }
bar() { return 'bar' ; }
}

B.const foo = () => { return 'foo' ; }
const bar = () => { return 'bar' ; }
export { bar, foo }

C.// FooUtils.js and BarUtils.js exist
Import (foo) from '/path/FooUtils.js';
Import (boo) from ' /path/NarUtils.js';

D.const foo = () => { return 'foo';}
const bar = () => {return 'bar'; }
Export default foo, bar;

Question 19

Which two console logs output NaN?
Choose 2 answers | |

A.console.log(10 / 0);

B.console.log(parseInt ' ("two')) ;

C.console.loeg(10 / 'five');

D.console.log(10 / Number('5) ) ;

Question 20

developer publishes a new version of a package with new features that do not break backward compatibility. The previous version number was 1.1.3.
Following semantic versioning format, what should the new package version number be?

A.1.2.0

B.1.2.3

C.2.0.0

D.1.1.4

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