Free Salesforce Javascript Developer I Exam Dumps and Javascript Developer I Exam Questions

Question No: 1

MultipleChoice

Which code change should be done for the console to log the following when 'Click me!' is clicked'

> Row log

> Table log

Options

ARemove lines 13 and14

BChange line 10 to event.stopPropagation (false) ;

CChange line 14 to elem.addEventListener ('click', printMessage, true);

DRemove line 10

Question No: 2

MultipleChoice

A developer removes the HTML class attributes from the check button, so now it is simply:

Question No: 3

MultipleChoice

Which two code snippets show working examples of a recursive function?

Choose 2 answers

Options

AOption A

BOption B

COption C

DOption D

Question No: 4

MultipleChoice

Refer to the HTML below:

Which JavaScript statement results in changing ''Tony'' to ''Mr. T. ''?

Options

ADocument.querySelectorAll ('#main # TONY ') , innerHTML = Mr, T , ' ;

BDocument.querySelector (' '#main li:second-child') innerHTML, = Mr, T, ';

CDocument.querySelectorAll ( '#main li, Tony ' ) innerHTNL = Mr, T , ' ;

DDocument.querySelector (''#main li:nth-child (2) ') , innerHTML = 'Mr . T ';

Question No: 5

MultipleChoice

A developer has code that calculates a restaurant bill, but generates incorrect answers while testing the code.

Which option allows the developer to step into each function execution within calculateBill?

Options

AUsing the debugger command on line 05.

BUsing the debugger command on line 03.

CCalling the console. Trace( total ) method on line 03.

DWrapping findsubtotal in a console .log method.

Question No: 6

MultipleChoice

The developer has a function that prints ''Hello'' to an input name. To test this, the developer created a function that returns world''.

What can the developer do to change the code to print ''Hello world''?

Options

AChange line 7 to ) () ;

BChange line 2 to console.log ( 'Hello', name () );

CChange line 9 to sayhello (world () ;

DChange line 5 to function world () (

Question No: 7

MultipleChoice

Refer to the code below:

Which code executes syhello once, two minutes from now?

Options

ASetTimeout (sayhello, 120000) ;

BSetInterval (sayhello, 120000) ;

CSetTimeout (sayhello( ), 120000) ;

Ddelay (sayhello, 120000) ;

Question No: 8

MultipleChoice

Refer to the code below:

What is result of the code block?

Options

AThe console logs only 'flag',

BThe console logs 'flag' and another flag',

CAn error is thrown.

DThe console logs flag' and then an error is thrown.

Question No: 9

MultipleChoice

Refer to the following code that imports a module named Utills,

Which two implementations of Utill, je export foo and bar such that the code above runs without error?

Choose 2 answers

Options

A//FooUtill.js and barUtils, js exist
Import (foo) from ,/Path/footUtils.js,:
Export (foo, bar)

BConst foo = () => ( return 'foo ' ; )
Const bar => ( return 'bar' ; )
Export (foo, bar)

CExport default class (
Foo ( ) ( return 'foo ,; )
Bar ( ) ( return ;bar ; )

DConst foo = ( ) => ( return 'foo; ; )
Const bar => => { return 'bar ';}
Export default foo, bar;

Question No: 10

MultipleChoice

Refer to the following code:

Which statement should be added to line 09 for the code to display 'The boat has a capacity of 10 people?

Options

Asuper.size = size;

Bship.size size;

Csuper (size);

Dthis.size = size;