{"id":1537,"date":"2016-08-06T06:20:31","date_gmt":"2016-08-06T06:20:31","guid":{"rendered":"https:\/\/www.codebee.co.th\/labs\/?p=1537"},"modified":"2016-10-23T11:50:39","modified_gmt":"2016-10-23T11:50:39","slug":"html5-%e0%b9%82%e0%b8%ab%e0%b8%a5%e0%b8%94%e0%b8%a3%e0%b8%b9%e0%b8%9b%e0%b9%80%e0%b8%82%e0%b9%89%e0%b8%b2%e0%b8%a1%e0%b8%b2%e0%b9%81%e0%b8%aa%e0%b8%94%e0%b8%87%e0%b9%83%e0%b8%99-canvas-%e0%b8%94","status":"publish","type":"post","link":"https:\/\/www.codebee.co.th\/labs\/html5-%e0%b9%82%e0%b8%ab%e0%b8%a5%e0%b8%94%e0%b8%a3%e0%b8%b9%e0%b8%9b%e0%b9%80%e0%b8%82%e0%b9%89%e0%b8%b2%e0%b8%a1%e0%b8%b2%e0%b9%81%e0%b8%aa%e0%b8%94%e0%b8%87%e0%b9%83%e0%b8%99-canvas-%e0%b8%94\/","title":{"rendered":"HTML5 \u0e42\u0e2b\u0e25\u0e14\u0e23\u0e39\u0e1b\u0e40\u0e02\u0e49\u0e32\u0e21\u0e32\u0e41\u0e2a\u0e14\u0e07\u0e43\u0e19 Canvas \u0e14\u0e49\u0e27\u0e22 Ajax"},"content":{"rendered":"<h3>HTML5 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\/>\n\u0e2a\u0e32\u0e40\u0e2b\u0e15\u0e38\u0e17\u0e35\u0e48\u0e40\u0e23\u0e32\u0e08\u0e33\u0e40\u0e1b\u0e47\u0e19\u0e15\u0e49\u0e2d\u0e07\u0e43\u0e0a\u0e49\u0e04\u0e33\u0e2a\u0e31\u0e48\u0e07\u0e02\u0e2d\u0e07 Ajax \u0e42\u0e2b\u0e25\u0e14\u0e23\u0e39\u0e1b\u0e01\u0e48\u0e2d\u0e19 \u0e01\u0e47\u0e40\u0e1e\u0e37\u0e48\u0e2d\u0e43\u0e2b\u0e49\u0e41\u0e19\u0e48\u0e43\u0e08\u0e27\u0e48\u0e32\u0e23\u0e39\u0e1b\u0e19\u0e31\u0e49\u0e19\u0e42\u0e2b\u0e25\u0e14\u0e40\u0e2a\u0e23\u0e47\u0e08\u0e41\u0e25\u0e49\u0e27\u0e2b\u0e23\u0e37\u0e2d\u0e43\u0e19\u0e01\u0e32\u0e23\u0e17\u0e33\u0e07\u0e32\u0e19\u0e08\u0e23\u0e34\u0e07 \u0e46<br \/>\n\u0e40\u0e23\u0e32\u0e2d\u0e32\u0e08\u0e08\u0e30\u0e15\u0e49\u0e2d\u0e07\u0e01\u0e32\u0e23\u0e17\u0e33 preloading \u0e2b\u0e23\u0e37\u0e2d progress bar 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class=\"lang:default decode:true \" >\r\nvar imageURL = \"https:\/\/www.codebee.co.th\/images\/logo1@2x.png\";\r\nvar request = $.ajax({\r\n\turl: imageURL,\r\n\tcrossDomain: true,\r\n\ttype: \"HEAD\",\r\n\tcache: true,\r\n});\r\nrequest.done(function () {\r\n\t\t\t\r\n});<\/pre>\n<p>\u0e27\u0e32\u0e14\u0e23\u0e39\u0e1b\u0e25\u0e07\u0e43\u0e19 Canvas \u0e14\u0e49\u0e27\u0e22\u0e04\u0e33\u0e2a\u0e31\u0e48\u0e07 drawImage \u0e02\u0e2d\u0e07 Context 2D<\/p>\n<pre class=\"lang:default decode:true \" >var img = new Image();\r\nimg.onload = function() {\r\n\tcontext.drawImage(this, (canvas.width*0.5)-(img.width*0.5), (canvas.height*0.5)-(img.height*0.5));\r\n};\r\nimg.src = imageURL;<\/pre>\n<p>\u0e01\u0e33\u0e2b\u0e19\u0e14\u0e15\u0e33\u0e41\u0e2b\u0e19\u0e48\u0e07 x \u0e41\u0e25\u0e30 y \u0e02\u0e2d\u0e07\u0e23\u0e39\u0e1b\u0e43\u0e2b\u0e49\u0e2d\u0e22\u0e39\u0e48\u0e15\u0e23\u0e07\u0e01\u0e25\u0e32\u0e07\u0e42\u0e14\u0e22\u0e04\u0e33\u0e19\u0e27\u0e13\u0e08\u0e32\u0e01\u0e02\u0e19\u0e32\u0e14\u0e02\u0e2d\u0e07 canvas \u0e41\u0e25\u0e30\u0e02\u0e19\u0e32\u0e14\u0e23\u0e39\u0e1b<\/p>\n<pre class=\"lang:default decode:true \" >context.drawImage(this, (canvas.width*0.5)-(img.width*0.5), (canvas.height*0.5)-(img.height*0.5));<\/pre>\n<p>\u0e43\u0e0a\u0e49 CSS \u0e01\u0e33\u0e2b\u0e19\u0e14\u0e15\u0e33\u0e41\u0e2b\u0e19\u0e48\u0e07\u0e43\u0e2b\u0e49 Canvas Element \u0e2d\u0e22\u0e39\u0e48\u0e15\u0e23\u0e07\u0e01\u0e25\u0e32\u0e07\u0e40\u0e27\u0e47\u0e1a\u0e40\u0e1a\u0e23\u0e32\u0e27\u0e4c\u0e40\u0e0b\u0e2d\u0e23\u0e4c<\/p>\n<pre class=\"lang:default decode:true \" >&lt;style&gt;\r\ncanvas {\r\n\tpadding-left: 0;\r\n\tpadding-right: 0;\r\n\tmargin-left: auto;\r\n\tmargin-right: auto;\r\n\tdisplay: block;\r\n\twidth: 800px;\r\n}\r\n&lt;\/style&gt;<\/pre>\n<p>\u0e17\u0e14\u0e2a\u0e2d\u0e1a\u0e01\u0e32\u0e23\u0e17\u0e33\u0e07\u0e32\u0e19\u0e02\u0e2d\u0e07\u0e42\u0e04\u0e4a\u0e14\u0e17\u0e31\u0e49\u0e07\u0e2b\u0e21\u0e14<\/p>\n<pre class=\"lang:default decode:true \" >&lt;html&gt;\r\n  &lt;head&gt;\r\n  &lt;script src=\"https:\/\/ajax.googleapis.com\/ajax\/libs\/jquery\/3.1.0\/jquery.min.js\"&gt;&lt;\/script&gt;\r\n  &lt;style&gt;\r\n  \tcanvas {\r\n\t\tpadding-left: 0;\r\n\t\tpadding-right: 0;\r\n\t\tmargin-left: auto;\r\n\t\tmargin-right: auto;\r\n\t\tdisplay: block;\r\n\t\twidth: 800px;\r\n\t}\r\n  &lt;\/style&gt;\r\n  &lt;\/head&gt;\r\n  &lt;body&gt;\r\n    &lt;canvas id=\"canvas\" width=\"800\" height=\"600\"&gt;&lt;\/canvas&gt;\r\n    &lt;script&gt;\r\n      var canvas = document.getElementById('canvas');\r\n\t  var context = canvas.getContext('2d');\r\n\t  canvas.style.backgroundColor = \"#d8322b\";\r\n\t  \r\n\t  var imageURL = \"https:\/\/www.codebee.co.th\/images\/logo1@2x.png\";\r\n\t  var request = $.ajax({\r\n\t\t\turl: imageURL,\r\n\t\t\tcrossDomain: true,\r\n\t\t\ttype: \"HEAD\",\r\n\t\t\tcache: true,\r\n\t\t});\r\n\t\trequest.done(function () {\r\n\t\t\tvar img = new Image();\r\n\t\t\timg.onload = function() {\r\n\t\t\t  context.drawImage(this, (canvas.width*0.5)-(img.width*0.5), (canvas.height*0.5)-(img.height*0.5));\r\n\t\t\t};\r\n\t\t\timg.src = imageURL;\r\n\t\t});\r\n    &lt;\/script&gt;\r\n  &lt;\/body&gt;\r\n&lt;\/html&gt;   <\/pre>\n<p>\u0e15\u0e31\u0e27\u0e2d\u0e22\u0e48\u0e32\u0e07\u0e01\u0e32\u0e23\u0e17\u0e33\u0e07\u0e32\u0e19 <a href=\"https:\/\/www.codebee.co.th\/labs\/examples\/HTML5-\u0e42\u0e2b\u0e25\u0e14\u0e23\u0e39\u0e1b\u0e40\u0e02\u0e49\u0e32\u0e21\u0e32\u0e41\u0e2a\u0e14\u0e07\u0e43\u0e19-Canvas-\u0e14\u0e49\u0e27\u0e22-Ajax.html\" target=\"_blank\">HTML5-\u0e42\u0e2b\u0e25\u0e14\u0e23\u0e39\u0e1b\u0e40\u0e02\u0e49\u0e32\u0e21\u0e32\u0e41\u0e2a\u0e14\u0e07\u0e43\u0e19-Canvas-\u0e14\u0e49\u0e27\u0e22-Ajax.html<\/a><br \/>\n<iframe loading=\"lazy\" src=\"https:\/\/www.codebee.co.th\/labs\/examples\/HTML5-\u0e42\u0e2b\u0e25\u0e14\u0e23\u0e39\u0e1b\u0e40\u0e02\u0e49\u0e32\u0e21\u0e32\u0e41\u0e2a\u0e14\u0e07\u0e43\u0e19-Canvas-\u0e14\u0e49\u0e27\u0e22-Ajax.html\" width=\"640\" height=\"480\" scrolling=\"no\" frameborder=\"0\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>HTML5 \u0e42\u0e2b\u0e25\u0e14\u0e23\u0e39\u0e1b\u0e40\u0e02\u0e49\u0e32\u0e21\u0e32\u0e41\u0e2a\u0e14\u0e07\u0e43\u0e19 Canvas \u0e14\u0e49\u0e27\u0e22 Ajax \u0e43\u0e19 HTML5 Canvas \u0e40\u0e23\u0e32\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e42\u0e2b\u0e25\u0e14\u0e23\u0e39\u0e1b\u0e43\u0e2b\u0e49\u0e40\u0e2a\u0e23\u0e47\u0e08\u0e01\u0e48\u0e2d\u0e19\u0e41\u0e25\u0e30\u0e43\u0e0a\u0e49\u0e04\u0e25\u0e32\u0e2a new Image() \u0e42\u0e2b\u0e25\u0e14\u0e23\u0e39\u0e1b\u0e2d\u0e35\u0e01\u0e23\u0e2d\u0e1a\u0e2b\u0e19\u0e36\u0e48\u0e07\u0e01\u0e48\u0e2d\u0e19\u0e17\u0e35\u0e48\u0e43\u0e0a\u0e49 \u0e04\u0e33\u0e2a\u0e31\u0e48\u0e07 drawImage \u0e02\u0e2d\u0e07 context 2d \u0e40\u0e1e\u0e37\u0e48\u0e2d\u0e27\u0e32\u0e14\u0e23\u0e39\u0e1b\u0e43\u0e2b\u0e49\u0e41\u0e2a\u0e14\u0e07\u0e1c\u0e25\u0e1a\u0e19 Canvas<\/p>\n","protected":false},"author":1,"featured_media":1535,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"video","meta":{"footnotes":""},"categories":[46],"tags":[477,476,479,403,202,88,933,371,614,478,549,501,935],"class_list":["post-1537","post","type-post","status-publish","format-video","has-post-thumbnail","hentry","category-website-development-","tag-canvas-image-form-url","tag-canvas-","tag-html-ajax","tag-html5","tag-html5-canvas","tag-html5-","tag-933","tag-371","tag-614","tag--html5","tag-549","tag-501","tag-935","post_format-post-format-video"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/posts\/1537","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/comments?post=1537"}],"version-history":[{"count":11,"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/posts\/1537\/revisions"}],"predecessor-version":[{"id":1548,"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/posts\/1537\/revisions\/1548"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/media\/1535"}],"wp:attachment":[{"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/media?parent=1537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/categories?post=1537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.codebee.co.th\/labs\/wp-json\/wp\/v2\/tags?post=1537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}