@danielkalen/simplybind/benchmarks/src/bower_components/aurelia-binding/doc/example/binding-radios/booleans/app.html

Magically simple, framework-less one-way/two-way data binding for frontend/backend in ~5kb.

<template>
  <form>
    <h4>Do you like cake?</h4>
    <label>
      <input type="radio" name="group3"
             model.bind="null" checked.bind="likesCake">
      Don't Know
    </label>
    <label>
      <input type="radio" name="group3"
             model.bind="true" checked.bind="likesCake">
      Yes
    </label>
    <label>
      <input type="radio" name="group3"
             model.bind="false" checked.bind="likesCake">
      No
    </label>

    likesCake = ${likesCake}
  </form>
</template>