Random data generation in Postman - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to generate a random integer between 1 and 100 in Postman.

Postman

var randomNumber = Math.[1](Math.random() * 100) + 1;

Drag options to blanks, or click blank then click option'

Arandom

Bceil

CrandomInt

Dfloor

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'random' which returns a decimal, not an integer

Choosing 'ceil' which rounds up

Choosing 'randomInt' which does not exist

The Math.floor() function rounds down to the nearest integer. Scaling Math.random() * 100 gives 0-99.999, flooring gives 0-99, and adding 1 produces 1-100.

2fill in blank

medium

Complete the code to generate a random string of 5 characters using Postman scripting.

Postman

var randomString = Math.random().toString(36).[1](2, 7);

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Asubstring

Bslice

Csubstr

Dsplit

Attempts:

3 left

💡 Hint

Common Mistakes

Using split which returns an array

Using substring with incorrect indices

The slice method extracts characters from a string between two indices. Here, it extracts 5 characters starting from index 2.

3fill in blank

hard

Fix the error in the code to generate a random boolean value in Postman.

Postman

var randomBool = Math.random() [1] 0.5;

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A>

B=

C==

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=' which assigns instead of compares

Using '==' which checks equality but is less clear here

To get a random boolean, compare if the random decimal is greater than 0.5. Using '=' is assignment and causes error.

4fill in blank

hard

Fill both blanks to create a random integer between 10 and 50 inclusive in Postman.

Postman

var randomInt = Math.floor(Math.random() * ([1] - [2] + 1)) + [2];

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A50

B10

C40

D60

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping min and max values

Forgetting to add 1 in the range calculation

The formula for random integer between min and max is Math.floor(Math.random() * (max - min + 1)) + min. Here, max=50 and min=10.

5fill in blank

hard

Fill all three blanks to generate a random hexadecimal color code in Postman.

Postman

var color = '#' + Math.floor(Math.random() * [1]).toString([2]).padStart([3], '0');

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A16777215

B16

C6

D255

Attempts:

3 left

💡 Hint

Common Mistakes

Using 255 instead of 16777215 for max value

Using base 10 instead of base 16 for conversion

Not padding the string to 6 characters

To generate a hex color code, multiply random by 16777215 (which is 0xFFFFFF), convert to base 16, and pad to 6 characters.