09クリア(×)ボタン付き入力欄

<main class="stage">
  <div class="cb is-demo" id="wrap">
    <label class="cb__label" for="cb-input">検索</label>
    <div class="cb__field">
      <input class="cb__input" id="cb-input" type="text" placeholder="検索キーワードを入力" autocomplete="off">
      <button type="button" class="cb__clear" id="cb-clear" aria-label="クリア">
        <svg viewBox="0 0 16 16" width="14" height="14" aria-hidden="true" focusable="false">
          <line x1="3" y1="3" x2="13" y2="13" stroke="currentColor" stroke-width="2" stroke-linecap="round"/>
          <line x1="13" y1="3" x2="3" y2="13" stroke="currentColor" stroke-width="2" stroke-linecap="round"/>
        </svg>
      </button>
    </div>
  </div>
</main>

@use "../../../../site/static/demo-tokens" as *;

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-instant;  // X 버튼 팝인 시간
$easing: $ease-pop;
$color: $subject-blue;    // 포커스 테두리 색

// ── 데모 무대 ──────────────────────────────────────────
@include stage($stage-ink);

.cb {
  box-sizing: border-box;
  width: min(272px, 84vw);
  background: $subject-cream;
  border-radius: $r-card;
  padding: $sp-4;
  box-shadow: $shadow-raised;

  &__label {
    display: block;
    margin: 0 0 $sp-1;
    font-weight: 700;
    font-size: 12px;
    line-height: 1;
    font-family: inherit;
    color: $stage-ink;
  }

  &__field {
    position: relative;
    width: 100%;
  }

  &__input {
    box-sizing: border-box;
    width: 100%;
    border: 2px solid transparent;
    border-radius: $r-control;
    padding: $sp-3 $sp-10 $sp-3 $sp-4;
    font-weight: 500;
    font-size: clamp(14px, 4.2vw, 16px);
    font-family: inherit;
    color: $stage-ink;
    background: #fff;
    transition: border-color $duration $easing;

    &:focus { outline: none; border-color: $color; }
  }

  &__clear {
    position: absolute;
    top: 50%;
    right: $sp-2;
    transform: translateY(-50%) scale(.5);
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 50%;
    background: rgba(23, 20, 26, .08);
    color: $stage-ink;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity $duration $easing, transform $duration $easing, background $duration $easing;

    &:hover, &:focus-visible { background: rgba(23, 20, 26, .16); }
  }
}

.cb.has-value .cb__clear {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .cb__input, .cb__clear { transition: none; }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.cb {
  box-sizing: border-box;
  width: min(272px, 84vw);
  background: #fff7e6;
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}
.cb__label {
  display: block;
  margin: 0 0 4px;
  font-weight: 700;
  font-size: 12px;
  line-height: 1;
  font-family: inherit;
  color: #17141a;
}
.cb__field {
  position: relative;
  width: 100%;
}
.cb__input {
  box-sizing: border-box;
  width: 100%;
  border: 2px solid transparent;
  border-radius: 12px;
  padding: 12px 40px 12px 16px;
  font-weight: 500;
  font-size: clamp(14px, 4.2vw, 16px);
  font-family: inherit;
  color: #17141a;
  background: #fff;
  transition: border-color 140ms cubic-bezier(0.2, 1.4, 0.4, 1);
}
.cb__input:focus {
  outline: none;
  border-color: #2f6df6;
}
.cb__clear {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%) scale(0.5);
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: rgba(23, 20, 26, 0.08);
  color: #17141a;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms cubic-bezier(0.2, 1.4, 0.4, 1), transform 140ms cubic-bezier(0.2, 1.4, 0.4, 1), background 140ms cubic-bezier(0.2, 1.4, 0.4, 1);
}
.cb__clear:hover, .cb__clear:focus-visible {
  background: rgba(23, 20, 26, 0.16);
}

.cb.has-value .cb__clear {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .cb__input, .cb__clear {
    transition: none;
  }
}

(function () {
  var wrap = document.getElementById('wrap');
  var input = document.getElementById('cb-input');
  var clearBtn = document.getElementById('cb-clear');

  function sync() {
    if (input.value) {
      wrap.classList.add('has-value');
    } else {
      wrap.classList.remove('has-value');
    }
  }

  function doClear() {
    input.value = '';
    sync();
    input.focus({ preventScroll: true });
  }

  input.addEventListener('input', sync);
  clearBtn.addEventListener('click', function () { stopDemo(); doClear(); });

  input.addEventListener('keydown', function (e) {
    stopDemo();
    if (e.key === 'Escape' && input.value) {
      doClear();
    }
  });
  input.addEventListener('pointerdown', stopDemo);

  function stopDemo() {
    if (!wrap.classList.contains('is-demo')) return;
    wrap.classList.remove('is-demo');
    clearInterval(timer);
  }

  var full = 'サマードレス';
  var i = 0, paused = false;
  var timer = setInterval(function () {
    if (paused) return;
    if (i > full.length) {
      paused = true;
      setTimeout(function () { doClear(); i = 0; paused = false; }, 900);
      return;
    }
    input.value = full.slice(0, i);
    sync();
    i++;
  }, 130);
})();

import { useRef, useState, type ChangeEvent } from "react";
import styles from "./ClearButtonInput.module.scss";

export type ClearButtonInputProps = {
  label?: string;
};

export default function ClearButtonInput({ label = "검색" }: ClearButtonInputProps) {
  const [value, setValue] = useState("");
  const inputRef = useRef<HTMLInputElement>(null);

  const clear = () => {
    setValue("");
    inputRef.current?.focus({ preventScroll: true });
  };

  const onChange = (e: ChangeEvent<HTMLInputElement>) => setValue(e.target.value);

  const onKeyDown = (e: any) => {
    if (e.key === "Escape" && value) {
      clear();
    }
  };

  return (
    <div className={styles.cb}>
      <label className={styles.label} htmlFor="cb-input-react">
        {label}
      </label>
      <div className={styles.field}>
        <input
          id="cb-input-react"
          ref={inputRef}
          className={styles.input}
          type="text"
          placeholder="검색어를 입력하세요"
          autoComplete="off"
          value={value}
          onChange={onChange}
          onKeyDown={onKeyDown}
        />
        <button
          type="button"
          className={value ? `${styles.clear} ${styles.visible}` : styles.clear}
          aria-label="지우기"
          onClick={clear}
        >
          <svg viewBox="0 0 16 16" width="14" height="14" aria-hidden="true" focusable="false">
            <line x1="3" y1="3" x2="13" y2="13" stroke="currentColor" strokeWidth={2} strokeLinecap="round" />
            <line x1="13" y1="3" x2="3" y2="13" stroke="currentColor" strokeWidth={2} strokeLinecap="round" />
          </svg>
        </button>
      </div>
    </div>
  );
}