<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Kole UI · IDCardInput</title>
  <link rel="stylesheet" href="../.design_library/kole-ui/colors_and_type.css" />
  <link rel="stylesheet" href="./IDCardInput.css" />
</head>
<body>
  <div class="kole-page">
    <h2 class="kole-h2">IDCardInput 身份证输入</h2>
    <p class="kole-desc">18 位校验（含校验位）、自动提取出生日期与性别。</p>

    <div class="kole-demo">
      <div class="kole-demo__title">基础用法</div>
      <div class="kole-idcard" id="idcard">
        <div class="kole-idcard-field" id="field">
          <input class="kole-idcard-input" role="group" id="input" placeholder="请输入 18 位身份证号" maxlength="18" />
        </div>
        <div class="kole-idcard-info" id="info" style="display:none"></div>
        <div class="kole-idcard-tip" id="tip">示例：11010119900307657X</div>
      </div>
    </div>
  </div>

  <script>
    var WEIGHTS = [7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2];
    var CHECK = '10X98765432';
    function validate(v) {
      if (!/^\d{17}[\dX]$/.test(v)) return { ok: false };
      var sum = 0;
      for (var i = 0; i < 17; i++) sum += parseInt(v[i], 10) * WEIGHTS[i];
      if (CHECK[sum % 11] !== v[17].toUpperCase()) return { ok: false };
      var birth = v.slice(6, 14);
      var birthStr = birth.slice(0,4) + '-' + birth.slice(4,6) + '-' + birth.slice(6,8);
      var gender = parseInt(v[16], 10) % 2 === 1 ? '男' : '女';
      return { ok: true, birth: birthStr, gender: gender };
    }

    var field = document.getElementById('field');
    var input = document.getElementById('input');
    var info = document.getElementById('info');
    var tip = document.getElementById('tip');

    input.addEventListener('input', function () {
      var v = input.value.replace(/[^0-9Xx]/g, '').toUpperCase().slice(0, 18);
      input.value = v;
      field.classList.remove('is-valid', 'is-invalid');
      tip.className = 'kole-idcard-tip';
      if (!v) { info.style.display = 'none'; tip.textContent = '示例：11010119900307657X'; return; }
      var r = validate(v);
      if (v.length < 18) { tip.textContent = '已输入 ' + v.length + ' 位，继续…'; return; }
      if (r.ok) {
        field.classList.add('is-valid');
        tip.className = 'kole-idcard-tip valid';
        tip.textContent = '校验通过';
        info.style.display = 'flex';
        info.innerHTML = '<span>出生日期：<b>' + r.birth + '</b></span><span>性别：<b>' + r.gender + '</b></span>';
      } else {
        field.classList.add('is-invalid');
        tip.className = 'kole-idcard-tip invalid';
        tip.textContent = '身份证号校验失败，请检查';
        info.style.display = 'none';
      }
    });
    input.addEventListener('focus', function () { field.classList.add('is-focus'); });
    input.addEventListener('blur', function () { field.classList.remove('is-focus'); });
  </script>
</body>
</html>
