{"id":336,"date":"2020-07-24T15:39:02","date_gmt":"2020-07-24T06:39:02","guid":{"rendered":"https:\/\/blog.wsd.sh\/?p=336"},"modified":"2020-07-24T15:39:02","modified_gmt":"2020-07-24T06:39:02","slug":"02-03-html%e3%81%a8javascript%e3%81%ae%e5%a4%89%e6%9b%b4","status":"publish","type":"post","link":"https:\/\/blog.wsd.sh\/?p=336","title":{"rendered":"02->03 html\u3068JavaScript\u306e\u5909\u66f4"},"content":{"rendered":"<p>jQuery\u3092\u5229\u7528\u3057\u306a\u3044\u65b9\u5f0f\u306b\u5909\u66f4<br \/>\n1.index.html<br \/>\nbefore:<\/p>\n<pre>\r\n&lt;script src=\"lib\/jquery-3.5.1.min.js\"&gt;&lt;\/script&gt;\r\n<\/pre>\n<p>after:<\/p>\n<pre>\r\n\u7121\u3057\r\n<\/pre>\n<p>2. js\/canvas.js<br \/>\n2.1 canvas\u4e0a\u3067\u306e\u30a4\u30d9\u30f3\u30c8<br \/>\nbefore:<\/p>\n<pre>\r\n    \/\/ canvas\u4e0a\u3067\u306e\u30a4\u30d9\u30f3\u30c8\r\n    $(\"#canvas\").mousedown(function(){\r\n      globalThis.clickFlg = 1; \/\/ \u30de\u30a6\u30b9\u62bc\u4e0b\u958b\u59cb\r\n    }).mouseup(function(){\r\n      globalThis.clickFlg = 0; \/\/ \u30de\u30a6\u30b9\u62bc\u4e0b\u7d42\u4e86\r\n    }).mousemove(function(e){\r\n      \/\/ \u30de\u30a6\u30b9\u79fb\u52d5\u51e6\u7406\r\n      if(!globalThis.clickFlg) return false;\r\n      root.draw(e.offsetX, e.offsetY, cnvBold, cnvColor);\r\n    });\r\n<\/pre>\n<p>after:<\/p>\n<pre>\r\n       var canvas = document.getElementById(\"canvas\");\r\n       canvas.onmousedown = function(){\r\n               globalThis.clickFlg = 1; \/\/ \u30de\u30a6\u30b9\u62bc\u4e0b\u958b\u59cb\r\n       }\r\n       canvas.onmouseup = function(){\r\n               globalThis.clickFlg = 0; \/\/ \u30de\u30a6\u30b9\u62bc\u4e0b\u7d42\u4e86\r\n       }\r\n       canvas.onmousemove = function(e){\r\n               if(!globalThis.clickFlg) return false;\r\n               root.draw(e.offsetX, e.offsetY, cnvBold, cnvColor);\r\n       }\r\n<\/pre>\n<p>2.2 \u63cf\u753b\u30af\u30ea\u30a2<br \/>\nbefore:<\/p>\n<pre>\r\n    \/\/ \u63cf\u753b\u30af\u30ea\u30a2\r\n    $(\"#clear\").click(function(){\r\n      root.ctx.clearRect(0,0);\r\n      root.setBgColor(bgColor);\r\n    });\r\n\r\n\r\n<\/pre>\n<p>after:<\/p>\n<pre>\r\n       var clear = document.getElementById(\"clear\");\r\n       clear.onclick = function(){\r\n               const cnvWidth = 500;\r\n               const cnvHeight = 500;\r\n               root.ctx.clearRect(0,0,cnvWidth,cnvHeight);\r\n               root.setBgColor(bgColor);\r\n       }\r\n<\/pre>\n<p>2.3 canvas\u3092\u753b\u50cf\u3067\u4fdd\u5b58<br \/>\nbefore:<\/p>\n<pre>\r\n    \/\/ canvas\u3092\u753b\u50cf\u3067\u4fdd\u5b58\r\n    $(\"#download\").click(function(){\r\n      canvas = document.getElementById('canvas');\r\n      var base64 = canvas.toDataURL(\"image\/jpeg\");\r\n      document.getElementById(\"download\").href = base64;\r\n    });\r\n<\/pre>\n<p>after:<\/p>\n<pre>\r\n       var download = document.getElementById(\"download\");\r\n       download.onclick = function(){\r\n               canvas = document.getElementById('canvas');\r\n               var base64 = canvas.toDataURL(\"image\/jpeg\");\r\n               document.getElementById(\"download\").href = base64;\r\n       }\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>jQuery\u3092\u5229\u7528\u3057\u306a\u3044\u65b9\u5f0f\u306b\u5909\u66f4 1.index.html before: &lt;script src=&#8221;lib\/jquery-3.5.1.min.js&#8221;&gt;&lt;\/script&gt; after: \u7121\u3057 2&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=\/wp\/v2\/posts\/336"}],"collection":[{"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=336"}],"version-history":[{"count":1,"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=\/wp\/v2\/posts\/336\/revisions"}],"predecessor-version":[{"id":337,"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=\/wp\/v2\/posts\/336\/revisions\/337"}],"wp:attachment":[{"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.wsd.sh\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}