{"id":247,"date":"2018-02-07T03:14:52","date_gmt":"2018-02-06T18:14:52","guid":{"rendered":"https:\/\/blog.capilano-fw.com\/?p=247"},"modified":"2018-02-07T03:14:52","modified_gmt":"2018-02-06T18:14:52","slug":"%e3%81%9f%e3%81%a3%e3%81%9f%ef%bc%98%e8%a1%8c%ef%bc%81%e3%82%ad%e3%83%a3%e3%83%b3%e3%83%90%e3%82%b9%e3%82%92%e3%83%af%e3%83%b3%e3%82%af%e3%83%aa%e3%83%83%e3%82%af%e3%81%a7%e4%bf%9d%e5%ad%98%e3%81%95","status":"publish","type":"post","link":"https:\/\/blog.capilano-fw.com\/?p=247","title":{"rendered":"\u305f\u3063\u305f\uff18\u884c\uff01\u30ad\u30e3\u30f3\u30d0\u30b9\u3092\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u4fdd\u5b58\u3055\u305b\u308bJavaScript\u30b3\u30fc\u30c9\uff08IE\u3082\u5927\u4e08\u592b\uff09"},"content":{"rendered":"

\u524d\u56de\u306e\u300c\u30b3\u30d4\u30da\u3067OK\uff01Chart.js \u306e\u6570\u5b57\u3092\uff13\u6841\u30ab\u30f3\u30de\u3067\u8868\u793a\u3059\u308b\u65b9\u6cd5<\/a>\u300d\u3067\u3082\u66f8\u304d\u307e\u3057\u305f\u3051\u3069\u3001HTML5\u306ecanvas\u3092\u4f7f\u3063\u3066\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u958b\u767a\u3092\u3057\u3066\u307e\u3059\u3002<\/p>\n

canvas\u306f\u4e45\u3057\u3076\u308a\u306b\u3055\u308f\u308a\u307e\u3057\u305f\u3051\u3069\u3001\u3088\u304f\u8003\u3048\u305f\u3089\u3053\u308c\u3063\u3066\u7d50\u69cb\u4f7f\u3044\u52dd\u624b\u3044\u3044\u3067\u3059\u3088\u306d\u3002chart.js\u304c\u3084\u3063\u3066\u308b\u307f\u305f\u3044\u306b\u53ef\u5909\u7684\u306b\u753b\u50cf\u3092\u5909\u66f4\u3067\u304d\u307e\u3059\u3057\u3001\u901f\u5ea6\u3082\u9045\u304f\u306f\u3042\u308a\u307e\u305b\u3093\u306e\u3067\u3002<\/p>\n

\u3067\u3001\u305d\u306e\u5f8c\u30ad\u30e3\u30f3\u30d0\u30b9\u3092\u753b\u50cf\u3067\u4fdd\u5b58\u3059\u308b\u5fc5\u8981\u304c\u3067\u3066\u304d\u305f\u3093\u3067\u8272\u3005\u3068\u63a2\u3063\u3066\u307f\u305f\u7d50\u679c\u3001\u306a\u3093\u3068\uff08DL\u90e8\u5206\u306f\uff09\u305f\u3063\u305f\uff18\u884c\u3067\u5b9f\u73fe\u3067\u304d\u308b\u3053\u3068\u304c\u5206\u304b\u3063\u305f<\/strong>\u3093\u3067\u3001\u30b7\u30a7\u30a2\u3092\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002\uff08\u3057\u304b\u3082\u3042\u306e\u306b\u3063\u304f\u304d\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30a8\u30af\u30b9\u30d7\u30ed\u30fc\u30e9\u30fc\u3067\u3082\u52d5\u304d\u307e\u3059\u3088\uff01\uff09<\/p>\n

\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u30fb\u30b5\u30f3\u30d7\u30eb<\/a><\/strong><\/p>\n

\u3044\u304d\u306a\u308a\u5b8c\u6210\u7248\u30b3\u30fc\u30c9<\/h2>\n

\u4eca\u56de\u306f\u30b3\u30fc\u30c9\u304c\u5c11\u306a\u3044\u3093\u3067\u5148\u306b\u5b8c\u5168\u7248\u30b3\u30fc\u30c9\u304b\u3089\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

\u306a\u304a\u3001\u30cd\u30a4\u30c6\u30a3\u30d6JavaScript \u3067\u66f8\u3044\u3066\u307e\u3059\u3002
\n\u3064\u307e\u308a\u3001jQuery\u3092\u4f7f\u3063\u3066\u306a\u304f\u3066\u3082OK\u3067\u3059\u3057\u3001\u3042\u306a\u305f\u304cReact\u30d5\u30ea\u30fc\u30af\u3067\u3082\u52d5\u304d\u307e\u3059\u3088\uff01<\/p>\n

\uff08\u203b\u3061\u306a\u307f\u306b\u6700\u8fd1\u6d77\u5916\u306e\u30b5\u30a4\u30c8\u3092\u898b\u308b\u3068\u30c9\u30f3\u30c9\u30f3\u300c\u8131jQuery\u300d\u304c\u9032\u3093\u3067\u308b\u307f\u305f\u3044\u3067\u3059\u3002\u3042\u3068\u3001\u3084\u3063\u3071\u308aES6\u304c\u6025\u6fc0\u306b\u5897\u3048\u3066\u3044\u308b\u5370\u8c61\u3067\u3059\u306d\u3002\uff09<\/p>\n

\u30b3\u30fc\u30c9<\/strong><\/p>\n

<html>\r\n<head><\/head>\r\n<body>\r\n<!--\u30ad\u30e3\u30f3\u30d0\u30b9-->\r\n<canvas id=\"my_canvas\" width=\"400\" height=\"200\"><\/canvas>\r\n<br>\r\n<!--\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u7528\u30dc\u30bf\u30f3-->\r\n<button id=\"download_button\">\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b<\/button>\r\n<!--\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u7528\u30ea\u30f3\u30af-->\r\n<a id=\"download_link\"><\/a>\r\n<script>\r\n\r\n    window.onload = function(){\r\n\r\n        var canvas = document.getElementById('my_canvas');\r\n        var downloadLink = document.getElementById('download_link');\r\n        var filename = 'your-filename.png';\r\n\r\n        \/*  \u30c6\u30b9\u30c8\u306e\u305f\u3081\u306b\u63cf\u753b  *\/\r\n        var ctx = canvas.getContext('2d');\r\n        ctx.fillStyle = '#eee';\r\n        ctx.fillRect(0, 0, 400, 200);\r\n        ctx.font = '18px sans-serif';\r\n        ctx.fillStyle = '#e00';\r\n        ctx.fillText('\u3053\u306e\u30ad\u30e3\u30f3\u30d0\u30b9\u3092\u753b\u50cf\u3067\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u307e\u3059', 25, 100);\r\n\r\n        var button = document.getElementById('download_button');\r\n        button.addEventListener('click', function(){\r\n\r\n            if (canvas.msToBlob) {\r\n                var blob = canvas.msToBlob();\r\n                window.navigator.msSaveBlob(blob, filename);\r\n            } else {\r\n                downloadLink.href = canvas.toDataURL('image\/png');\r\n                downloadLink.download = filename;\r\n                downloadLink.click();\r\n            }\r\n\r\n        });\r\n\r\n    };\r\n\r\n<\/script>\r\n<\/body>\r\n<\/html><\/pre>\n
\u4e2d\u8eab\u3092\u8aac\u660e<\/h2>\n
\u307e\u305aHTML\u5074\u306b\u5fc5\u8981\u306a\u306e\u306f\u4ee5\u4e0b\u306e\uff13\u3064\u3067\u3059\u3002<\/p>\n
    \n
  1. canvas\u30bf\u30b0<\/strong>\u3000\u30fb\u30fb\u30fb\u3000\u5f53\u305f\u308a\u524d\u3067\u3059\u306d\uff08\u7b11\uff09<\/li>\n
  2. \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u7528\u30dc\u30bf\u30f3<\/strong>\u3000\u30fb\u30fb\u30fb\u3000\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u3067\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/li>\n
  3. \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u7528\u30ea\u30f3\u30af<\/strong>\u3000\u30fb\u30fb\u30fb\u3000\u30ad\u30e3\u30f3\u30d0\u30b9\u3092\u753b\u50cf\u3067\u4fdd\u5b58\u3059\u308b\u3068\u304d\u306b\u5fc5\u8981\u306b\u306a\u3063\u3066\u304d\u307e\u3059\u3002\u96a0\u3057\u8981\u7d20\u3067\u3059\u3002<\/li>\n<\/ol>\n
    \u3067\u3001JavaScript\u5074\u306e\u6d41\u308c\u306f\u3053\u3093\u306a\u30ab\u30f3\u30b8\u3067\u3059\u3002<\/p>\n
      \n
    1. window.onload \u3067\u30da\u30fc\u30b8\u30ed\u30fc\u30c9\u304c\u5b8c\u4e86\u3057\u305f\u3089\u51e6\u7406\u3092\u958b\u59cb<\/strong><\/li>\n
    2. \uff08\u30c6\u30b9\u30c8\u306e\u305f\u3081\u306b\uff09\u30ad\u30e3\u30f3\u30d0\u30b9\u3092\u63cf\u753b<\/strong><\/li>\n
    3. \u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u3068\u304d\u306b\u8d77\u52d5\u3059\u308b\u30a4\u30d9\u30f3\u30c8\u3092\u8a2d\u5b9a<\/strong><\/li>\n<\/ol>\n
      \u305d\u3057\u3066\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u306e\u672c\u4f53\u90e8\u5206\u306f\u3053\u3061\u3089\u3002<\/p>\n
      if (canvas.msToBlob) {\r\n    var blob = canvas.msToBlob();\r\n    window.navigator.msSaveBlob(blob, filename);\r\n} else {\r\n    downloadLink.href = canvas.toDataURL('image\/png');\r\n    downloadLink.download = filename;\r\n    downloadLink.click();\r\n}\r\n<\/pre>\n
      \uff11\u884c\u76ee\u306b\u3044\u304d\u306a\u308aif<\/strong>\u304c\u304d\u3066\u308b\u306e\u306f\u3001\uff08\u554f\u984c\u5150\u306e^^;\uff09IE\u3001Edge\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u3067\u3059\u3002
      \n\u3064\u307e\u308aif\u306e\u4e2d\u8eab\u306f\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u7528\u3001else\u306fChrome\u306a\u3069\u4ed6\u793e\u7528\u3063\u3066\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n
      \u305d\u308c\u306b\u3057\u3066\u3082\u3001\u30a6\u30a7\u30d6\u958b\u767a\u3092\u521d\u3081\u3066\u5341\u5e74\u4f59\u3002\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u306f\u3044\u3064\u307e\u3067\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u767a\u5c55\u3092\u963b\u5bb3\u3057\u7d9a\u3051\u308b\u3093\u3067\u3057\u3087\u3046\u304b\u30fb\u30fb\u30fb\u30fb\u30fb\u30fb\u3002
      \n\u305d\u308d\u305d\u308d\u3001\u3053\u3046\u3044\u3046\u306e\u3082\u3061\u3083\u3093\u3068\u30b5\u30dd\u30fc\u30c8\u3057\u306a\u306f\u308c\u30fb\u30fb\u30fb\uff08\u6c57\uff09<\/p>\n
      \u3061\u306a\u307f\u306b\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u7528\u3060\u3068\u4fdd\u5b58\u306f image\/png \u5f62\u5f0f\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3082\u3057\u304b\u3059\u308b\u3068 image\/jpeg \u306b\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308b\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3051\u3069\u3001\u50d5\u306e\u4e2d\u3067\u306f\u3082\u3046\u5f7c\u7b49\u306f\u898b\u9650\u3063\u3066\u3044\u308b\u306e\u3067\u30d1\u30b9\u3057\u307e\u3059\u30fb\u30fb\u30fb\uff08\u7b11\uff09<\/p>\n
      \u3067\u306f\u3001\u305d\u306e\u4ed6\u306e\u30d6\u30e9\u30a6\u30b6\u7528\u306e\u30b3\u30fc\u30c9\u304c\u3069\u3093\u306a\u6d41\u308c\u3067\u52d5\u304f\u306e\u304b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
        \n
      1. \u30ad\u30e3\u30f3\u30d0\u30b9\u304b\u3089toDataURL()<\/strong>\u3092\u4f7f\u3063\u3066\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u53d6\u5f97<\/li>\n
      2. \u30ea\u30f3\u30af\u306e href<\/strong> \u306b\u753b\u50cf\u30c7\u30fc\u30bf\u3001download<\/strong>\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u8a2d\u5b9a<\/li>\n
      3. \u30ea\u30f3\u30af\u304c\u30af\u30ea\u30c3\u30af\u3055\u308c\u305f\u3053\u3068\u306b\u3059\u308b<\/li>\n<\/ol>\n
        \u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002\u3064\u307e\u308a\u3001IE\u3001edge\u3067\u306f<\/strong><a>\u30bf\u30b0\u306edownload\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u4f7f\u3048\u306a\u3044\u306e\u3067\u3001\u30c0\u30e1\u307f\u305f\u3044\u3067\u3059\u306d\u3002\u00a0<\/strong>Oh my…<\/p>\n
        \u3068\u3044\u3046\u3053\u3068\u3067\u3001\u4eca\u56de\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306f\u30ad\u30e3\u30f3\u30d0\u30b9\u63cf\u753b\u30e9\u30a4\u30d6\u30e9\u30ea\u300cJimmyJS<\/a>\u300d\u306b\u3082\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u88fd\u30d6\u30e9\u30a6\u30b6\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u307e\u305b\u3093\u3057\u3001\u5bfe\u5fdc\u3059\u308b\u4e88\u5b9a\u306f\u4eca\u306e\u6240\u3042\u308a\u307e\u305b\u3093\u3002\uff08\u3053\u3046\u3044\u3046\u306e\u3092\u3084\u3063\u3066\u3044\u304b\u306a\u3044\u3068\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u3082\u91cd\u3044\u8170\u3092\u3042\u3052\u306a\u3044\u3068\u601d\u3046\u3093\u3067\u3059\u3088\u306d\u3002\u307e\u30fc\u3001\u3082\u3046PC\u7528\u30d6\u30e9\u30a6\u30b6\u306f\u307b\u307c\u307f\u3093\u306a\u4f7f\u308f\u306a\u304f\u306a\u3063\u3066\u304d\u3066\u307e\u3059\u3051\u3069\u306d\u3002\uff09<\/p>\n
        \u3068\u3044\u3046\u3053\u3068\u3067\u4eca\u56de\u306f\u4ee5\u4e0a\u3067\u3059\u3002
        \n\u3067\u306f\u3067\u306f\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u524d\u56de\u306e\u300c\u30b3\u30d4\u30da\u3067OK\uff01Chart.js \u306e\u6570\u5b57\u3092\uff13\u6841\u30ab\u30f3\u30de\u3067\u8868\u793a\u3059\u308b\u65b9\u6cd5\u300d\u3067\u3082\u66f8\u304d\u307e\u3057\u305f\u3051\u3069\u3001HTML5\u306ecanvas\u3092\u4f7f\u3063\u3066\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u958b\u767a\u3092\u3057\u3066\u307e\u3059\u3002 ca … <\/p>\n
        “\u305f\u3063\u305f\uff18\u884c\uff01\u30ad\u30e3\u30f3\u30d0\u30b9\u3092\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u4fdd\u5b58\u3055\u305b\u308bJavaScript\u30b3\u30fc\u30c9\uff08IE\u3082\u5927\u4e08\u592b\uff09” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":250,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27,15],"tags":[28,31],"class_list":["post-247","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-html5","category-15","tag-canvas","tag-31"],"_links":{"self":[{"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=\/wp\/v2\/posts\/247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=247"}],"version-history":[{"count":7,"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=\/wp\/v2\/posts\/247\/revisions"}],"predecessor-version":[{"id":255,"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=\/wp\/v2\/posts\/247\/revisions\/255"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=\/wp\/v2\/media\/250"}],"wp:attachment":[{"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.capilano-fw.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}