Online Access Free JavaScript-Developer-I Exam Questions

A 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 formats, what should the new package version number be?

• A.2.0.0
• B.1.2.3
• C.1.1.4
• D.1.2.0

Refer to the code below:
const pi = 3.1415926;
What is the data type of pi?

• A.Decimal
• B.Number
• C.Float
• D.Double

A developer removes the HTML class attribute from the checkout button, so now it is simply:
< button > Checkout < /button >
There is a test to verify the existence of the checkout button, however it looks for a button with class= " blue "
. The test fails because no such button is found.
Which type of test category describes this test?

• A.False positive
• B.True positive
• C.True negative
• D.False negative

Refer to the following code:
01 let obj = {
02 foo: 1,
03 bar: 2
04 }
05 let output = []
06
07 for (let something of obj) {
08 output.push(something);
09 }
10
11 console.log(output);
What is the value of output on line 11?

• A.[ " foo:1 " , " bar:2 " ]
• B.[1, 2]
• C.[ " foo " , " bar " ]
• D.An error will occur due to the incorrect usage of the for_of statement on line 07.

Refer to the code declarations below:
let str1 = ' Java ' ;
let str2 = ' Script ' ;
Which three expressions return the string JavaScript?

• A.`${str1}${str2}`
• B.const({str1, str2});
• C.str1.concat(str2);
• D.str1 + str2;
• E.str1.join(str2);