{"id":846,"date":"2017-03-11T13:15:36","date_gmt":"2017-03-11T05:15:36","guid":{"rendered":"http:\/\/www.qdabc.cn\/?p=846"},"modified":"2017-03-11T13:15:36","modified_gmt":"2017-03-11T05:15:36","slug":"canvas%e4%bf%9d%e5%ad%98%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"http:\/\/www.qdabc.cn\/?p=846","title":{"rendered":"canvas\u4fdd\u5b58\u6587\u4ef6"},"content":{"rendered":"<pre class=\"brush:js;toolbar:false\">function draw(id){\r\n  \/\/ \u83b7\u53d6canvas\u7684id\r\n  var canvas = document.getElementById('canvas');\r\n  \/\/ \u53d6\u5f97\u4e0a\u4e0b\u6587\r\n  var context = canvas.getContext('2d');\r\n  \/\/ \u7ed8\u5236\u80cc\u666f\r\n  context.fillStyle = \"#f45da9\";\r\n  context.fillRect(0,0,500,350);  ...\r\n\r\n \/\/\u4fdd\u5b58\u6587\u4ef6\r\n window.location = canvas.toDataURL('image\/jpeg');\/\/\u4f1a\u8f93\u51fa\u4e00\u4e2ajpeg\u7684\u56fe\u7247\r\n}<\/pre>\n<p>\u89e3\u6790\uff1a<br \/>\ncanvas.toDataURL\uff08type\uff09;\u8868\u793a\u8f93\u51fa\u7684MIME\u7c7b\u578b\u3002<br \/>\n\u4ec0\u4e48\u662fMIME\u7c7b\u578b\uff1f jpg\u3001image\/jpeg\u3002<\/p>\n<p class=\"post-copyright\">\u6b22\u8fce\u5206\u4eab\u672c\u6587\uff0c\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u51fa\u5904\uff1a<a href=\"http:\/\/www.qdabc.cn\">\u524d\u7aefABC<\/a> &raquo; <a href=\"http:\/\/www.qdabc.cn\/?p=846\">canvas\u4fdd\u5b58\u6587\u4ef6<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>function draw(id){ \/\/ \u83b7\u53d6canvas\u7684id var canvas = document.getElementById(&#8216;canvas&#8217;); \/\/ \u53d6\u5f97\u4e0a\u4e0b\u6587 var conte [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":81,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[30],"_links":{"self":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/846"}],"collection":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=846"}],"version-history":[{"count":1,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/846\/revisions"}],"predecessor-version":[{"id":847,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/846\/revisions\/847"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/media\/81"}],"wp:attachment":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=846"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}