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# Happy ticket Course Challenge: Intro to Programming

A happy ticket is a ticket with such a serial number that the sum of the first three digits is the same as the sume of the last three digits.

For example, ticket number 385916 is a happy ticket, since 3 + 8 + 5 = 9 + 1 + 6

## isHappyTicket.js

Implement and export as default a function that verifies the happiness of a ticket. This function should return `true` if the ticket is happy, and `false` otherwise.

``````isHappyTicket(385916); // true
isHappyTicket(231002); // false
isHappyTicket(128722); // true
``````

### Hints

Convert a number to string using `String` like so:

``````String(1234); // "1234"
``````

Convert a string back into a number using `Number` like so:

``````Number("456"); // 456
``````

Use the `length` value to find out the length of a string:

``````'welcome'.length; // 7
``````

Use the substr method to get a substring:

``````'foo'.substr(1, 2); // 'oo';
``````
Successful completion: 96%

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