### Install voucher-code-generator with npm

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Installs the voucher-code-generator library as a project dependency using the npm package manager.

```Shell
$ npm install --save voucher-code-generator
```

--------------------------------

### Install Dependencies - Voucher Code Generator JS - Shell

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Installs the necessary project dependencies using npm. This command should be run in the project's root directory after cloning the repository.

```Shell
npm install
```

--------------------------------

### Generate sequential codes from an offset

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Generates codes starting from a specific position within the sequence of all possible codes for a given configuration, using the 'sequenceOffset' parameter.

```JavaScript
var sequenceOffset = 52;

voucher_codes.generate({
    count: 3,
    length: 2,
    charset: "0123456789"
}, sequenceOffset);
```

--------------------------------

### Run Tests - Voucher Code Generator JS - Shell

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Executes the test suite for the project using the npm test script defined in the package.json file. This verifies the library's functionality.

```Shell
npm run test
```

--------------------------------

### Handle infeasible code generation configurations

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Demonstrates how to catch the error thrown when the requested number of unique codes cannot be generated with the given length and charset.

```JavaScript
try {
    voucher_codes.generate({
        count: 1000,
        length: 2,
        charset: "0123456789"
    });
} catch (e) {
    console.log("Sorry, not possible.");
}
```

--------------------------------

### Include voucher-code-generator in a browser

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Includes the voucher-code-generator library in an HTML page using a script tag, making the `voucher_codes` object available globally.

```HTML
<script src="voucher_codes.js"></script>
```

--------------------------------

### Generate codes with prefix and postfix

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Adds a fixed string before (prefix) and after (postfix) each generated code.

```JavaScript
voucher_codes.generate({
    prefix: "promo-",
    postfix: "-2015"
});
```

--------------------------------

### Displaying Generated Voucher Codes in HTML Lists - JavaScript

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/test/test.html

Calls the previously defined `fillList` helper function to display the generated basic and patterned voucher codes in HTML lists identified by 'basic-codes' and 'pattern-codes' respectively.

```javascript
fillList("basic-codes", basicCodes);
fillList("pattern-codes", patternCodes);
```

--------------------------------

### Generate basic coupon codes

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Generates a specified number of coupon codes with a default length and charset.

```JavaScript
voucher_codes.generate({
    length: 8,
    count: 5
});
```

--------------------------------

### Helper Function to Populate HTML List - JavaScript

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/test/test.html

Defines a reusable JavaScript function that takes an HTML list element's ID and an array of items, appending each item as a new list item (<li>) to the specified list.

```javascript
function fillList(listId, items) {
  var list = document.getElementById(listId);
  items.forEach(function(item) {
    list.innerHTML += "<li>" + item + "</li>";
  });
}
```

--------------------------------

### Include voucher-code-generator in Node.js

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Imports the voucher-code-generator library into a Node.js script using the require function.

```JavaScript
var voucher_codes = require('voucher-code-generator');
```

--------------------------------

### Generating Basic Voucher Codes - JavaScript

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/test/test.html

Generates an array of 5 voucher codes, each 6 characters long, using the default character set provided by the library.

```javascript
var basicCodes = voucher_codes.generate({ length: 6, count: 5 });
```

--------------------------------

### Generate codes following a pattern

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Generates codes that match a specific pattern, using '#' as a placeholder for random characters. The 'length' parameter is ignored when 'pattern' is used.

```JavaScript
voucher_codes.generate({
    pattern: "##-###-##",
});
```

--------------------------------

### Generating Patterned Voucher Codes - JavaScript

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/test/test.html

Generates an array of 5 voucher codes that strictly follow the specified '###-###-###' pattern, where '#' represents a digit.

```javascript
var patternCodes = voucher_codes.generate({ pattern: "###-###-###", count: 5 });
```

--------------------------------

### Generate codes with a predefined charset

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Generates codes using one of the library's built-in character sets, such as 'alphabetic'.

```JavaScript
voucher_codes.generate({
    length: 5,
    count: 4,
    charset: voucher_codes.charset("alphabetic")
});
```

--------------------------------

### Generate codes with a custom charset

Source: https://github.com/voucherifyio/voucher-code-generator-js/blob/master/README.md

Generates codes using a user-defined set of characters instead of the default alphanumeric charset.

```JavaScript
voucher_codes.generate({
    length: 6,
    count: 3,
    charset: "0123456789"
});
```

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