{"id":107270,"date":"2019-10-23T18:26:27","date_gmt":"2019-10-23T09:26:27","guid":{"rendered":"http:\/\/www.key-p.com\/blog\/staff\/?p=107270"},"modified":"2019-10-23T18:26:27","modified_gmt":"2019-10-23T09:26:27","slug":"web-components%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%82%88%e3%81%86","status":"publish","type":"post","link":"https:\/\/www.key-p.com\/blog\/staff\/archives\/107270","title":{"rendered":"Web Components\u3092\u4f7f\u3063\u3066\u307f\u3088\u3046"},"content":{"rendered":"

\n\u6e9d\u7551\u3067\u3059\u3002
\n\u968f\u5206\u9593\u304c\u7a7a\u3044\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002\u524d\u56de\u306f\u53bb\u5e74\u306eVue Fes\u306e\u6295\u7a3f\u30fb\u30fb\u30fb\u3002
\n\u4eca\u5e74\u306eVue Fes\u306f\u53f0\u98a8\u3067\u4e2d\u6b62\u306b\u306a\u3063\u3061\u3083\u3044\u307e\u3057\u305f\u306d\u3002\u3002\u3002\u4ed5\u65b9\u306a\u3044\u3002
\n
\nQiita Team\u306b\u306f\u3084\u305f\u3089\u843d\u66f8\u304d\u3057\u3066\u305f\u308a\u3001\u500b\u4eba\u30d6\u30ed\u30b0\u306b\u306f\u3061\u3087\u3044\u3061\u3087\u3044\u66f8\u3044\u3066\u308b\u3093\u3067\u3059\u3051\u3069\u3001\u3053\u3063\u3061\u306b\u306f\u66f8\u304b\u305a\u3067\u3057\u305f\u3002
\n
\n

Web Components<\/h3>\n\u3055\u3066\u3001\u672c\u984c\u3002
\nWeb Components\u4f7f\u3063\u3066\u307e\u3059\u304b\uff1f
\n\u81ea\u5206\u3082\u3084\u3063\u3068\u89e6\u308d\u3046\u304b\u306a\u30fc\u3068\u8a00\u3063\u305f\u30ec\u30d9\u30eb\u3067\u3001\u4eca\u56de\u89e6\u3063\u3066\u307f\u305f\u307e\u3067\u3067\u3059\u3002
\n
\n\u305d\u3082\u305d\u3082Web Components\u3063\u3066\u4f55\u3067\u3059\u304b\uff1f\u3068\u3044\u3046\u65b9\u5411\u3051\u306b\u3002
\n\u3053\u3093\u306a\u3053\u3068\u601d\u3063\u305f\u3053\u3068\u306a\u3044\u3067\u3059\u304b\uff1f
\n
\n\u30fb\u81ea\u4f5c\u30bf\u30b0\u4f5c\u3063\u3066HTML\u66f8\u3051\u305f\u3089\u306a\u30fc\uff01
\n\u30fbHTML\u66f8\u304d\u307e\u304f\u308b\u3068\u8aad\u307f\u306b\u304f\u3044\u3057\u3001\u3082\u3046\u3057\u3093\u3069\u3044\u30fc\u5acc\u3084\u30fc\uff01
\n
\n\u8aad\u307f\u306b\u304f\u3044\u304b\u3069\u3046\u304b\u306f\u66f8\u304d\u624b\u306e\u554f\u984c\u611f\u304c\u5426\u3081\u306a\u3044\u3067\u3059\u304c\u3001\u305d\u308c\u306f\u7f6e\u3044\u3066\u304a\u3044\u3066\u3002
\n\u3053\u3093\u306a\u601d\u3044\u306b\u5fdc\u3048\u3066\u304f\u308c\u308b\u306e\u304c\u300cWeb Components\u300d\u3067\u3059\u3002
\n
\n\u8a73\u3057\u3044\u3053\u3068\u306f\u3053\u3063\u3061\u8aad\u3093\u3067\u3082\u3089\u3063\u3066\u2193
\nWeb Components | MDN<\/a>
\n
\n<\/p>\n

Web Components \u306f\u3001\u518d\u5229\u7528\u53ef\u80fd\u306a\u30ab\u30b9\u30bf\u30e0\u8981\u7d20\u3092\u4f5c\u6210\u3057\u3001\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u306e\u4e2d\u3067\u5229\u7528\u3059\u308b\u305f\u3081\u306e\u3001\u4e00\u9023\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3067\u3059\u3002<\/p><\/blockquote>\n

\n
\n\u3053\u3046\u3044\u3046\u3053\u3068\u3067\u3059\u3002
\nJS\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u89e6\u3063\u3066\u308b\u65b9\u306a\u3089\u99b4\u67d3\u307f\u6df1\u3044\u3001Component\u3092\u4f5c\u3063\u3066\u7d44\u307f\u5408\u308f\u305b\u308b\u3042\u306e\u611f\u899a\u3067\u3059\u3002
\n\u3042\u308c\u306b\u8fd1\u3044\u3053\u3068\u304c\u3067\u304d\u308b\u3088\uff01\u3068\u3044\u3046\u30a4\u30e1\u30fc\u30b8\u304c\u8fd1\u3044\u3068\u601d\u3044\u307e\u3059\u3002
\n
\n\u8eab\u8fd1\u3067\u4f7f\u308f\u308c\u3066\u3044\u308b\u3068\u3053\u308d\u3092\u3042\u3052\u308b\u3068\u3001Youtube\u306a\u3093\u304b\u3067\u306f\u30d0\u30ea\u30d0\u30ea\u4f7f\u308f\u308c\u3066\u307e\u3059\u3002
\n\u8981\u7d20\u306e\u691c\u8a3c\u306a\u308a\u3057\u3066\u307f\u308b\u3068\u3001ytb-xxxx\u3001yt-xxxx\u307f\u305f\u3044\u306a\u30bf\u30b0\u304c\u898b\u3048\u308b\u306f\u305a\u3002
\n
\n

Web Components\u306e\u4f7f\u3044\u65b9(1)<\/h3>\n\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002
\n<kp-link><\/kp-link>\u3068\u3044\u3046\u30bf\u30b0\u3067\u3001\u5f0a\u793e\u306eHP\u3078\u306e\u30ea\u30f3\u30af\u3092\u8868\u793a\u3059\u308b\u3082\u306e\u3092\u4f5c\u3063\u3066\u307f\u307e\u3059\u3002
\n
\n
\n
class KPLink extends HTMLElement {\n  constructor() {\n    super()\n    const shadowRoot = this.attachShadow({ mode: 'open' })\n    shadowRoot.innerHTML = `\n      <style>\n      \ta {\n          background: steelblue;\n          color: white;\n          padding: 10px;\n          border-radius: 4px;\n        }\n      <\/style>\n      <a href=\"http:\/\/www.key-p.com\/\" target=\"_blank\">\u30ad\u30fc\u30fb\u30dd\u30a4\u30f3\u30c8\u306eHP\u306f\u3053\u3053\u3092\u30af\u30ea\u30c3\u30af\uff01<\/a>\n    `\n  }\n}\n\ncustomElements.define('kp-link', KPLink)<\/pre>\n
<kp-link><\/kp-link><\/pre>\n
\n\u3053\u308c\u3067\u3001\u2193\u307f\u305f\u3044\u306a\u306e\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002
\n\"\"\n
\n\u307e\u305a\u3001class\u3092\u4f5c\u3063\u3066\u3001HTMLElement\u3092\u7d99\u627f\u3002
\nconstructor\u3067\u306fthis.attachShadow({ mode: 'open' })\u3068\u3057\u3066\u3001shadowRoot\u3092\u4f5c\u308a\u307e\u3059\u3002
\n\u3053\u308c\u304c\u4f5c\u308bComponent\u306e\u6839\u672c\u306b\u306a\u308a\u307e\u3059\u3002
\n\u3042\u3068\u306fshadowRoot\u306einnerHTML\u306bHTML\u3068\u30b9\u30bf\u30a4\u30eb\u3092\u5b9a\u7fa9\u3002
\n
\n\u6700\u5f8c\u306bcustomElements.define\u3067\u4f7f\u3046\u30bf\u30b0\u540d\u3068\u4f5c\u3063\u305f\u30af\u30e9\u30b9\u3092\u5165\u308c\u3066\u5b8c\u4e86\u3002
\n\u3053\u308c\u3067\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002
\n\u610f\u5916\u3068\u7c21\u5358\u3002
\n
\n\u3055\u3089\u3063\u3068\u51fa\u3066\u304d\u3066\u3044\u308battachShadow\u306emode\u3067\u3059\u304c\u3001open\u3068closed\u304c\u3042\u308a\u307e\u3059\u3002
\n\u9055\u3044\u306f\u300c\u5916\u90e8\u306eJavaScript\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u300d\u3067\u3059\u3002
\n\u5916\u304b\u3089\u89e6\u3089\u308c\u305f\u304f\u306a\u3044\u308f\u30fc\uff01\u306a\u3089closed\u3063\u3066\u306a\u611f\u3058\u3067\u3057\u3087\u3046\u304b\u3002
\n
\n
Web Components\u306e\u4f7f\u3044\u65b9(2)<\/h3>\n(1)\u3060\u3051\u3060\u3068\u3001\u4e2d\u3067\u66f8\u3044\u305fHTML\u3057\u304b\u8868\u793a\u3067\u304d\u307e\u305b\u3093\u3002
\n\u4f8b\u3048\u3070\u3001\u30bf\u30d6\u306a\u3093\u304b\u3092\u4f5c\u308b\u3068\u304d\u306f\u30bf\u30d6\u306e\u30bf\u30a4\u30c8\u30eb\u90e8\u5206\u3068\u30b3\u30f3\u30c6\u30f3\u30c4\u90e8\u5206\u306f\u5916\u90e8\u304b\u3089\u633f\u5165\u3057\u305f\u3044\u306f\u305a\u3067\u3059\u3002
\n\u305d\u3046\u3044\u3063\u305f\u5834\u5408\u306f<slot><\/slot>\u3092\u4f7f\u3046\u3068\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3002
\n(Vue\u306b\u3082slot\u3042\u308a\u307e\u3059\u306d)
\n
\n\u6b21\u306f<my-tab><\/my-tab>\u3067\u7c21\u5358\u306a\u30bf\u30d6\u3092\u8868\u793a\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002
\n
\n 
\n
class MyTab extends HTMLElement {\n  constructor() {\n    super()\n    const shadowRoot = this.attachShadow({ mode: 'open' })\n    this.selectedTabIndex = 0\n    this.tabTitleNodes\n    this.tabContentNodes\n    \n    const style = `\n      <style>\n      \t#tab-nav {\n          display: flex;\n        }\n        #tab-nav ::slotted(*) {\n          padding: 5px;\n          border: 1px solid #ccc;\n          border-top-left-radius: 5px;\n          border-top-right-radius: 5px; \n          cursor: pointer;\n        }\n        #tab-nav ::slotted(.selected) {\n          background: #454545;\n          color: white;\n        }\n        #tab-nav ::slotted(:hover) {\n          background: #ccc;\n        }\n        #tab-content ::slotted(*) {\n          border: 1px solid #ccc;\n          padding: 5px;\n          display: none;\n        }\n        #tab-content ::slotted(.active) {\n          display: block;\n        }\n      <\/style>\n    `\n    \n    const tabTemplate = `\n      <div>\n      \t<div id=\"tab-nav\">\n      \t  <slot name=\"tab-title\"><\/slot>\n        <\/div>\n        <div id=\"tab-content\">\n          <slot name=\"tab-content\"><\/slot>\n        <\/div>\n      <\/div>\n    `\n    shadowRoot.innerHTML = style + tabTemplate\n  }\n  connectedCallback() {\n    const slot = this.shadowRoot.querySelectorAll('slot')\n    this.tabTitleNodes = slot[0].assignedNodes()\n    this.tabContentNodes = slot[1].assignedNodes()\n    \n    this.tabTitleNodes.forEach(($elm, i) => {\n      $elm.addEventListener('click', e => {\n    \tthis.selectedTabIndex = i\n        this.selectTab()\n      })\n    })\n    \n    this.selectTab()\n  }\n  selectTab() {\n    this.tabTitleNodes.forEach(($elm, i) => {\n    \tif (this.selectedTabIndex === i) {\n      \t$elm.classList.add('selected')\n      } else {\n      \t$elm.classList.remove('selected')\n      }\n    })\n    \n    this.tabContentNodes.forEach(($elm, i) => {\n      if (this.selectedTabIndex === i) {\n      \t$elm.classList.add('active')\n      } else {\n      \t$elm.classList.remove('active')\n      }\n    })\n  }\n}\n\ncustomElements.define('my-tab', MyTab)<\/pre>\n
<my-tab>\n  <div slot=\"tab-title\" id=\"tab1\">Tab1<\/div>\n  <div slot=\"tab-title\" id=\"tab2\">Tab2<\/div>\n  <div slot=\"tab-content\" id=\"tab-content1\">Tab Content1<\/div>\n  <div slot=\"tab-content\" id=\"tab-content2\">Tab Content2<\/div>\n<\/my-tab><\/pre>\n
\n\u3053\u308c\u3067\u3053\u3093\u306a\u611f\u3058\u306e\u30bf\u30d6\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002
\n\"\"\n
\n\u3061\u3087\u3063\u3068\u9577\u3044\u306e\u3068\u3001\u591a\u5206\u3082\u3063\u3068\u30b9\u30c3\u30ad\u30ea\u66f8\u3051\u305d\u3046\u3067\u3059\u304c\u30fb\u30fb\u30fb\u3002
\n\u3056\u3063\u304f\u308a\u3084\u3063\u3066\u308b\u3053\u3068\u3060\u3051\u3002
\n
\n\u5168\u4f53\u7684\u306a\u6d41\u308c\u306f\u540c\u3058\u3067\u3059\u3002
\n\bselectedTabIndex\u304c\u9078\u629e\u4e2d\u306e\u30bf\u30d6\u306eindex\u3002
\ntabTitleNodes\u3001tabContentNodes\u306b\u306f\u305d\u308c\u305e\u308c\u306eNode\u3092\u5165\u308c\u3066\u307e\u3059\u3002
\n
\n\u306f\u3058\u3081\u306bstyle\u3092\u898b\u3066\u307f\u308b\u3068\u3001\u898b\u6163\u308c\u306a\u3044::slotted\u3068\u3044\u3046\u7591\u4f3c\u8981\u7d20\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002
\n\u305d\u306e\u540d\u306e\u901a\u308a\u3001slot\u3067\u653e\u308a\u8fbc\u307e\u308c\u305f\u8981\u7d20\u306b\u5bfe\u3057\u3066\u30b9\u30bf\u30a4\u30eb\u3092\u3042\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u306e\u4ed6host\u306a\u3093\u304b\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u8abf\u3079\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01
\n
\n\b\u6b21\u306bconnectedCallback\u3002
\n\u3044\u308f\u3086\u308b\u3001\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002(React, Vue, Angular\u306a\u3093\u304b\u3067\u3082\u3001Component\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3063\u3066\u3042\u308a\u307e\u3059\u3088\u306d)
\n\u3053\u308c\u306f\u3001\u8981\u7d20\u304cDOM\u306b\u8ffd\u52a0\u3055\u308c\u305f\u3089\u8d70\u308a\u307e\u3059\u3002
\n
\n\u6700\u5f8c\u306bassignedNodes()\u3002
\nslot\u3067\u8ffd\u52a0\u3055\u308c\u305f\u8981\u7d20\u3092\u5f15\u3063\u5f35\u308a\u51fa\u305b\u307e\u3059\u3002
\n
\n\b\u3042\u3068\u306f\u3001tabTitle\u306bclick\u30a4\u30d9\u30f3\u30c8\u3092\u4ed5\u8fbc\u3093\u3067\u3001selectTab\u3067classList\u3092\u64cd\u4f5c\u3057\u3066\u3044\u307e\u3059\u3002
\n
\n\u3061\u3087\u3063\u3068\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u304b\u306d\u3002\u3002\u3002
\n\u3068\u306f\u3044\u3048\u3001\u3053\u308c\u3067\u5916\u90e8\u304b\u3089\u633f\u5165\u3059\u308b\u65b9\u6cd5\u304c\u5206\u304b\u308a\u307e\u3057\u305f\u3002
\n
\n
\u3055\u3044\u3054\u306b<\/h3>\n\b\b\b\b\b\u3053\u308c\u3060\u3051\u3060\u3068\u307e\u3060\u4e0d\u5b89\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u3057\u3063\u304b\u308a\u3084\u308c\u3070UI\u30e9\u30a4\u30d6\u30e9\u30ea\u7684\u306a\u306e\u304c\u4f5c\u308c\u308b\uff01\uff1f
\n\u3068\u306b\u304b\u304f\u3001\u8907\u96d1\u306aHTML\u3084CSS\u3092\u4e2d\u306b\u9589\u3058\u8fbc\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3001\u5192\u982d\u3067\u66f8\u3044\u305f\u3088\u3046\u306a\u300c\u8aad\u307f\u306b\u304f\u3044\u3057\u300d\u3068\u3044\u3063\u305f\u3053\u3068\u3082\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002
\n
\n\u4f8b\u3048\u3070\u3001\u5f0a\u793e\u306eWebFile\u306a\u3089<wf-button>\u307f\u305f\u3044\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u3084\u308b\u3068\u3001\u30b5\u30fc\u30d3\u30b9\u5185\u3067\u306f\u305d\u308c\u3092\u4f7f\u3063\u3066\u304a\u3051\u3070\u3001\u8ab0\u304c\u3084\u3063\u3066\u3082\u898b\u305f\u76ee\u306b\u95a2\u3059\u308b\u63fa\u308c\u3082\u5c11\u306a\u304f\u6e08\u307f\u305d\u3046\u3067\u3059\u3002
\n
\n\u3053\u308c\u304b\u3089Web Components\u304c\u6d78\u900f\u3057\u3066\u3044\u304f\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u697d\u3057\u307f\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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