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Get a random truthy/falsy value
/**
* Get a random truthy/falsy value
* {@link https://gist.github.com/kieranbarker/25b1b4b4cef14c65b10dcefdc462f6ee}
* @returns {Number} 1 (truthy) or 0 (falsy)
*/
function fiftyFifty () {
return Math.round(Math.random());
}
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@kieranbarker kieranbarker commented Jan 30, 2021

MIT License

Copyright (c) 2021 Kieran Barker

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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@kieranbarker kieranbarker commented Jan 30, 2021

It's not necessary, but if you really wanted to return an explicit boolean value for some reason, you could force the conversion using a double NOT (!) operator:

/**
 * Get a random boolean value
 * {@link https://gist.github.com/kieranbarker/25b1b4b4cef14c65b10dcefdc462f6ee}
 * @returns {Boolean} True or false
 */
function fiftyFifty () {
  return !!Math.round(Math.random());
}
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@kieranbarker kieranbarker commented Feb 1, 2021

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