Alpine.js x-bound: Bind Numeric Input

by rameel

HTML

<div x-data="{ a: 2, b: 7 }" x-format class="form">
  <label>
	  <input type="number" &value="a" min="0" max="10" />
	  <input type="range"  &value="a" min="0" max="10" />
  </label>

  <label>
	  <input type="number" &value="b" min="0" max="10" />
	  <input type="range"  &value="b" min="0" max="10" />
  </label>

  <p>
    {{ a }} + {{ b }} = {{ a + b }}
  </p>
</div>

<script src="https://cdn.jsdelivr.net/npm/@ramstack/alpinegear-bound@1/alpinegear-bound.min.js" defer></script>
<script src="https://cdn.jsdelivr.net/npm/@ramstack/alpinegear-format@1/alpinegear-format.min.js" defer></script>
<script src="https://cdn.jsdelivr.net/npm/alpinejs@3/dist/cdn.min.js" defer></script>

CSS

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: #0f172a;
}

h3 {
  margin: 0;
}

.form {
  display: flex;
  flex-direction: column;
  flex-basis: auto;
  background: #fff;
  padding: 1.5rem;
  width: 100%;
  min-width: 320px;
  max-width: 480px;
  border-radius: 4px;
  border: 1px solid rgba(15, 23, 42, 0.15);
  box-shadow: 0 6px 18px rgba(10, 15, 30, 0.06);
  gap: 1rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
  font-size: 0.9rem;
  font-weight: 600;
  user-select: none;
}
input {
  display: block;
  width: 100%;
  height: 2.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.95rem;
  border: 1px solid rgba(15, 23, 42, 0.15);
  border-radius: 3px;
  outline: none;
  transition: border-color 0.1s, box-shadow 0.1s;
  line-height: 1.3;
}

input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}