{"id":4436,"date":"2019-08-14T18:36:02","date_gmt":"2019-08-14T09:36:02","guid":{"rendered":"https:\/\/blog.capilano-fw.com\/?p=4436"},"modified":"2019-08-14T18:36:02","modified_gmt":"2019-08-14T09:36:02","slug":"%e7%b0%a1%e5%8d%98%e3%81%ab%e3%81%a7%e3%81%8d%e3%82%8b%ef%bc%81web-component%e3%81%ae%e4%bd%9c%e3%82%8a%e6%96%b9%e3%83%bb%e5%ae%9f%e4%be%8b%e5%85%a8%ef%bc%95%e4%bb%b6%ef%bc%81","status":"publish","type":"post","link":"https:\/\/blog.capilano-fw.com\/?p=4436","title":{"rendered":"\u7c21\u5358\u306b\u3067\u304d\u308b\uff01Web Component\u306e\u4f5c\u308a\u65b9\u30fb\u5b9f\u4f8b\u5168\uff15\u4ef6\uff01"},"content":{"rendered":"

\u3055\u3066\u3055\u3066\u3001\u3053\u306e\u30d6\u30ed\u30b0\u3067\u306f\u65e5\u9803\u304b\u3089Laravel\u3068Vue.js\u306e\u8a71\u984c\u3092\u30e1\u30a4\u30f3\u306b\u3057\u3066\u8a18\u4e8b\u3092\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u304b\u305f\u308f\u3089\u3067\u65b0\u3057\u3044\u6280\u8853\u3082\u5438\u53ce\u3057\u3066\u3044\u3053\u3046\u3068\u3044\u3046\u53d6\u308a\u7d44\u307f\u3082\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u3068\u3044\u3046\u306e\u3082\u3001\u30a6\u30a7\u30d6\u958b\u767a\u3060\u3051\u306b\u9650\u3089\u305aIT\u7cfb\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306f\u5e38\u306b\u65e9\u3044\u30b9\u30d4\u30fc\u30c9\u3067\u9032\u5316\u3057\u3066\u3044\u3066\u3001\u6570\u5e74\u7d4c\u3063\u3066\u3057\u307e\u3046\u3068\u305d\u308c\u304c\u5b8c\u5168\u306b\u53e4\u3044\u3082\u306e\u306b\u306a\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u3053\u3068\u3082\u3042\u3063\u305f\u308a\u3059\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n

\u305d\u3057\u3066\u3001\u305d\u3093\u306a\u89b3\u70b9\u304b\u3089\u4eca\u56de\u30c6\u30fc\u30de\u306b\u53d6\u308a\u4e0a\u3052\u308b\u306e\u306f<\/p>\n

Web Component\uff08\u3046\u3047\u3076\u3053\u3093\u307d\u30fc\u306d\u3093\u3068\uff09<\/strong><\/p>\n

\u3067\u3059\u3002<\/p>\n

\u30a6\u30a7\u30d6\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u3044\u3046\u306e\u306f\u3001\u7c21\u5358\u306b\u3044\u3046\u3068\u72ec\u81ea\u306eHTML\u30bf\u30b0\u304c\u3064\u304b\u3048\u308b\u3088\u3046\u306b\u306a\u308b\u6280\u8853\u306e\u3053\u3068\u3067\u3001\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

<my-tag><\/my-tag><\/strong><\/pre>\n
\u3057\u304b\u3082\u3001Vue<\/code>\u3084React<\/code>\u306a\u3069\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u4f9d\u5b58\u3057\u307e\u305b\u3093\u304b\u3089\u3001\u4e00\u5ea6\u5fc5\u8981\u306a\u30a6\u30a7\u30d6\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f5c\u3063\u3066\u304a\u304f\u3068\u3069\u306e\u74b0\u5883\u3067\u3082\u4f7f\u3044\u307e\u308f\u3057\u304c\u3067\u304d\u307e\u3059\u3057\u3001\u3055\u3089\u306b\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u3067\u3042\u3063\u3066\u3082\u3001\u305d\u308c\u3089\u3068\u306e\u9023\u643a\u3082\u6bd4\u8f03\u7684\u7c21\u5358\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u4eca\u56de\u306f\u65e5\u672c\u8a9e\u306b\u95a2\u9023\u3059\u308b\u4ee5\u4e0b\uff15\u3064\u306e\u30a6\u30a7\u30d6\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b3\u30fc\u30c9\u3092\u30b5\u30f3\u30d7\u30eb\u3068\u3057\u3066\u4f5c\u6210\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
    \n
  • \u5e74\u9f62\u8868\u8a18<\/li>\n
  • \u65e5\u4ed8<\/li>\n
  • \u90fd\u9053\u5e9c\u770c<\/li>\n
  • \u548c\u66a6<\/li>\n
  • \u90f5\u4fbf\u756a\u53f7<\/li>\n<\/ul>\n
    \u203b \u306a\u304a\u3001JavaScript\u3067\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u81ea\u52d5\u7684\u306b\u518d\u8a08\u7b97\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
    Web Component\u3092\u3064\u304f\u308b\u57fa\u672c<\/h1>\n
    Web Component<\/code>\u3068\u3044\u3046\u5927\u5c64\u306a\u540d\u524d\u304c\u3064\u3044\u3066\u3044\u307e\u3059\u304c\u3001\u7d50\u5c40\u306e\u3068\u3053\u308dJavaScript\u3067HTMLElement<\/code>\u3068\u3044\u3046\u30af\u30e9\u30b9\u3092\u62e1\u5f35\u3057\u305f\u3082\u306e\u306b\u3059\u304e\u307e\u305b\u3093\u3002<\/p>\n
    \u305d\u306e\u305f\u3081\u3001\u5358\u306b\u300c\u30cf\u30ed\u30fc\uff01\u300d\u3068\u8868\u793a\u3059\u308b\u3060\u3051\u306e\u5358\u7d14\u306aWeb Component<\/code>\u3092\u3064\u304f\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306aJavaScript<\/code>\u30d5\u30a1\u30a4\u30eb\uff08hello.js<\/code>\uff09\u3092\u3064\u304f\u308a\u307e\u3059\u3002<\/p>\n
    class ShowHelloElement extends HTMLElement {<\/strong>\r\n\r\n    connectedCallback() {<\/strong>\r\n\r\n        this.innerText = '\u30cf\u30ed\u30fc\uff01';<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n}<\/strong>\r\n\r\ncustomElements.define('show-hello', ShowHelloElement);<\/strong><\/pre>\n
    \u305d\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bhello.js<\/code>\u3092\u8aad\u307f\u8fbc\u3093\u3067<show-hello><\/show-hello><\/code>\u3092\u666e\u901a\u306eHTML\u30bf\u30b0\u3068\u3057\u3066\u8a18\u8ff0\u3059\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n
    <html>\r\n<body>\r\n    <div>\r\n        <show-hello><\/show-hello><\/strong>\r\n    <\/div>\r\n    <script src=\"hello.js\"><\/script><\/strong>\r\n<\/body>\r\n<\/html><\/pre>\n
    \u3061\u306a\u307f\u306bWeb Component\u306e\u540d\u524d\u306f\u3001\u30cf\u30a4\u30d5\u30f3\u3092\u542b\u3093\u3060\u3082\u306e\u3067\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002<\/strong><\/p>\n
    \u3064\u307e\u308a\u3001<hello><\/hello><\/code>\u3068\u3044\u3046\u4f7f\u3044\u65b9\u306f\u3067\u304d\u305a\u3001\u3082\u3057customElements.define('hello', MyElement)<\/code>\u3068\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    Uncaught DOMException: Failed to execute 'define' on 'CustomElementRegistry': \"hello\" is not a valid custom element name<\/strong><\/pre>\n
    \u3067\u306f\u3001\u6b21\u304b\u3089\u306f\u672c\u984c\u306e\u65e5\u672c\u8a9e\u306b\u95a2\u9023\u3059\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\uff11\u3064\u305a\u3064\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n
    \u65e5\u672c\u8a9e\u306b\u95a2\u9023\u3059\u308bWeb Components<\/h1>\n
    \u5e74\u9f62\uff08\u624d\u3001\u6b73\uff09\u3092\u8868\u793a\u3059\u308bWeb Component<\/h2>\n
    \u8a95\u751f\u65e5\u3092\u30bb\u30c3\u30c8\u3059\u308c\u3070\u81ea\u52d5\u7684\u306b\u305d\u306e\u4eba\u306e\u5e74\u9f62\u3092\u8a08\u7b97\u3057\u3066\u304f\u308c\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002\u306a\u304a\u3001\u5358\u4f4d\u306f\u300c\u624d\u300d\u3068\u300c\u6b73\u300d\u3092\u3069\u3061\u3089\u3067\u3082\u9078\u3079\u308b\u3088\u3046\u306b\u3057\u307e\u3059\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u300c\u624d\u300d\uff09<\/p>\n
    \u307e\u305a\u306fJavaScript\u3002<\/p>\n
    class JapaneseAgeElement extends HTMLElement {<\/strong>\r\n\r\n    static observedAttributes = ['birth-date'];<\/strong>\r\n\r\n    attributeChangedCallback(name, oldValue, newValue) {<\/strong>\r\n\r\n        if(name === 'birth-date') {<\/strong>\r\n\r\n            this.setInnerText(newValue);<\/strong>\r\n\r\n        }<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n    connectedCallback() {<\/strong>\r\n\r\n        const year = this.getAttribute('birth-date');<\/strong>\r\n        this.setInnerText(year);<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n    setInnerText(dateString) {<\/strong>\r\n\r\n        let innerText = '';<\/strong>\r\n        const dt = new Date(dateString);<\/strong>\r\n\r\n        if(dt instanceof Date && !isNaN(dt)) {<\/strong>\r\n\r\n            innerText = this.calcAge(dt);<\/strong>\r\n\r\n        }<\/strong>\r\n\r\n        this.innerText = innerText + this.getUnit();<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n    calcAge(date) {<\/strong>\r\n\r\n        const diff = Date.now() - date.getTime();<\/strong>\r\n        const ageDate = new Date(diff);<\/strong>\r\n        return Math.abs(ageDate.getUTCFullYear() - 1970);<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n    getUnit() {<\/strong>\r\n\r\n        let unit = this.getAttribute('unit');<\/strong>\r\n\r\n        if(!unit) {<\/strong>\r\n\r\n            unit = '\u624d';<\/strong>\r\n\r\n        }<\/strong>\r\n\r\n        return unit;<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n}<\/strong>\r\n\r\ncustomElements.define('japanese-age', JapaneseAgeElement);<\/strong><\/pre>\n
    \u4f7f\u3044\u65b9\u306f\u3053\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    <html>\r\n<body>\r\n    <div>\r\n        <!-- \u5e74\u9f62 -->\r\n        <japanese-age birth-date=\"2000-01-01\" id=\"age\"><\/japanese-age><\/strong>\r\n        <japanese-age birth-date=\"2010-05-031\" unit=\"\u6b73\"><\/japanese-age><\/strong>\r\n    <\/div>\r\n    <script src=\"japanese-age.js\"><\/script><\/strong>\r\n    <script>\r\n\r\n        window.onload = () => {<\/strong>\r\n\r\n            document.getElementById('age').setAttribute('birth-date', '1990-03-31');<\/strong>\r\n\r\n        };<\/strong>\r\n\r\n    <\/script>\r\n<\/body>\r\n<\/html><\/pre>\n
    \u30bf\u30b0\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u610f\u5473\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n
      \n
    • birth-date\u3000\u30fb\u30fb\u30fb\u3000\u8a95\u751f\u65e5\u3002new Date()\u3067\u65e5\u4ed8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u4f5c\u308c\u308b\u306a\u3089\u3069\u306e\u8868\u8a18\u3067\u3082\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n
    • unit\u3000\u30fb\u30fb\u30fb\u3000\u300c\u624d\u300d\u3068\u300c\u6b73\u300d\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u3082\u3057\u4f55\u3082\u6307\u5b9a\u3055\u308c\u306a\u3044\u5834\u5408\u306f\u300c\u624d\u300d\u3068\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n
      \u65e5\u4ed8\u3092\u8868\u793a\u3059\u308bWeb Component<\/h2>\n
      JavaScript<\/code>\u3060\u3051\u3067\u306a\u304fPHP<\/code>\u306a\u3069\u3067\u3082\u305d\u3046\u3067\u3059\u304c\u3001\u958b\u767a\u3092\u3057\u3066\u3044\u3066\u5730\u5473\u306b\u3081\u3093\u3069\u3046\u306a\u306e\u304c\u3001\u65e5\u672c\u8a9e\u306e\u66dc\u65e5\u3092\u8868\u793a\u3057\u305f\u3044\u5834\u5408\u3067\u3059\u3002<\/strong>\u3082\u3061\u308d\u3093\u82f1\u8a9e\u8868\u8a18\u306a\u3089\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u6708\u301c\u65e5\u3092\u8868\u793a\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u5834\u5408\u306f\u72ec\u81ea\u306b\u7528\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
      \u3053\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u305d\u3046\u3044\u3063\u305f\u66dc\u65e5\u306e\u8868\u8a18\u306b\u5bfe\u5fdc\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n
      class JapaneseDateElement extends HTMLElement {<\/strong>\r\n\r\n    static observedAttributes = ['date'];<\/strong>\r\n\r\n    attributeChangedCallback(name, oldValue, newValue) {<\/strong>\r\n\r\n        if(name === 'date') {<\/strong>\r\n\r\n            this.setInnerText(newValue);<\/strong>\r\n\r\n        }<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n    connectedCallback() {<\/strong>\r\n\r\n        const year = this.getAttribute('date');<\/strong>\r\n        this.setInnerText(year);<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n    setInnerText(dateString) {<\/strong>\r\n\r\n        let innerText = '';<\/strong>\r\n        const dt = new Date(dateString);<\/strong>\r\n\r\n        if(dt instanceof Date && !isNaN(dt)) {<\/strong>\r\n\r\n            const format = this.getFormat();<\/strong>\r\n            let date = (format) ? format : 'Y\u5e74m\u6708d\u65e5\uff08w\uff09';<\/strong>\r\n            date = date.replace('Y', dt.getFullYear());<\/strong>\r\n            date = date.replace('y', dt.getFullYear().toString().substr(-2));<\/strong>\r\n            date = date.replace('m', dt.getMonth() + 1);<\/strong>\r\n            date = date.replace('d', dt.getDate());<\/strong>\r\n            date = date.replace('w', this.getJapaneseDayOfWeek(dt.getDay()));<\/strong>\r\n            innerText = date;<\/strong>\r\n\r\n        }<\/strong>\r\n\r\n        this.innerText = innerText;<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n    getFormat() {<\/strong>\r\n\r\n        return this.getAttribute('format');<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n    getJapaneseDayOfWeek(dayNumber) {<\/strong>\r\n\r\n        const days = ['\u65e5', '\u6708', '\u706b', '\u6c34', '\u6728', '\u91d1', '\u571f'];<\/strong>\r\n        return days[dayNumber];<\/strong>\r\n\r\n    }<\/strong>\r\n\r\n}<\/strong>\r\n\r\ncustomElements.define('japanese-date', JapaneseDateElement);<\/strong><\/pre>\n
      \u4f7f\u3044\u65b9\u306f\u3053\u3046\u306a\u308a\u307e\u3059\u3002<\/p>\n
      <html>\r\n<body>\r\n    <div>\r\n        <!-- \u65e5\u4ed8 -->\r\n        <japanese-date date=\"2019-01-31\" format=\"Y\u5e74m\u6708d\u65e5\uff08w\uff09\" id=\"date\"><\/japanese-date><\/strong>\r\n        <japanese-date date=\"2019-12-31\" format=\"y.m.d\uff08w\u66dc\u65e5\uff09\"><\/japanese-date><\/strong>\r\n    <\/div>\r\n    <script src=\"japanese-date.js\"><\/script><\/strong>\r\n    <script>\r\n\r\n        window.onload = () => {<\/strong>\r\n\r\n            document.getElementById('date').setAttribute('date', '2019-05-31');<\/strong>\r\n\r\n        };<\/strong>\r\n\r\n    <\/script>\r\n<\/body>\r\n<\/html><\/pre>\n
      \u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u610f\u5473\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n