{"id":3315,"date":"2024-11-10T12:45:14","date_gmt":"2024-11-10T04:45:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3315\/"},"modified":"2024-11-10T12:45:14","modified_gmt":"2024-11-10T04:45:14","slug":"js%e5%a6%82%e4%bd%95%e8%ae%be%e7%bd%ae%e7%94%bb%e7%ac%94%e5%b0%ba%e5%af%b8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3315\/","title":{"rendered":"js\u5982\u4f55\u8bbe\u7f6e\u753b\u7b14\u5c3a\u5bf8"},"content":{"rendered":"

\n \u8981\u4f7f\u7528 javascript \u8bbe\u7f6e\u753b\u5e03\u753b\u7b14\u5c3a\u5bf8\uff0c\u9996\u5148\u83b7\u53d6\u753b\u5e03\u7684 2d \u4e0a\u4e0b\u6587\u5e76\u4f7f\u7528 setlinewidth() \u65b9\u6cd5\u8bbe\u7f6e\u753b\u7b14\u5bbd\u5ea6\uff1a\u83b7\u53d6\u753b\u5e03\u7684 2d \u4e0a\u4e0b\u6587\uff1aconst ctx = canvas.getcontext(“2d”);\u8bbe\u7f6e\u753b\u7b14\u5bbd\u5ea6\uff1actx.linewidth = 10;\n<\/p><\/blockquote>\n

\"js\u5982\u4f55\u8bbe\u7f6e\u753b\u7b14\u5c3a\u5bf8\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u4f7f\u7528 JavaScript \u8bbe\u7f6e\u753b\u5e03\u753b\u7b14\u5c3a\u5bf8<\/strong><\/p>\n

\u8981\u4f7f\u7528 JavaScript \u8bbe\u7f6e\u753b\u5e03\u753b\u7b14\u5c3a\u5bf8\uff0c\u53ef\u4ee5\u4f7f\u7528 canvas.getContext(“2d”) \u65b9\u6cd5\u83b7\u53d6\u753b\u5e03\u7684 2D \u4e0a\u4e0b\u6587\uff0c\u7136\u540e\u4f7f\u7528\u4e0a\u4e0b\u6587\u5bf9\u8c61\u7684 setLineWidth() \u65b9\u6cd5\u8bbe\u7f6e\u753b\u7b14\u5bbd\u5ea6\u3002<\/p>\n

\u8be6\u7ec6\u6b65\u9aa4\uff1a<\/strong><\/p>\n

    \n
  1. \n

    \u83b7\u53d6\u753b\u5e03\u7684 2D \u4e0a\u4e0b\u6587\uff1a<\/strong><\/p>\n

    const ctx = canvas.getContext(\"2d\");<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236  <\/li>\n
  2. \n
    \u8bbe\u7f6e\u753b\u7b14\u5bbd\u5ea6\uff1a<\/strong><\/p>\n
    ctx.lineWidth = 10; \/\/ \u5c06\u753b\u7b14\u5bbd\u5ea6\u8bbe\u7f6e\u4e3a 10 \u50cf\u7d20<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236  <\/li>\n<\/ol>\n
    \u753b\u7b14\u5bbd\u5ea6\u4ee5\u50cf\u7d20\u4e3a\u5355\u4f4d\uff0c\u56e0\u6b64\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8bbe\u7f6e\u4efb\u4f55\u503c\u3002\u4f8b\u5982\uff0c\u8981\u5c06\u753b\u7b14\u5bbd\u5ea6\u8bbe\u7f6e\u4e3a 20 \u50cf\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n
    ctx.lineWidth = 20;<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    const canvas = document.getElementById(\"myCanvas\");\nconst ctx = canvas.getContext(\"2d\");\n\n\/\/ \u8bbe\u7f6e\u753b\u7b14\u5bbd\u5ea6\u4e3a 10 \u50cf\u7d20\nctx.lineWidth = 10;\n\n\/\/ \u4f7f\u7528\u753b\u7b14\u5728\u753b\u5e03\u4e0a\u7ed8\u5236\u4e00\u6761\u7ebf\u6bb5\nctx.beginPath();\nctx.moveTo(50, 50);\nctx.lineTo(150, 50);\nctx.stroke();<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u753b\u5e03\u4e0a\u5c06\u7ed8\u5236\u4e00\u6761\u5bbd\u5ea6\u4e3a 10 \u50cf\u7d20\u7684\u7ebf\u6bb5\uff0c\u4ece\u5750\u6807 (50, 50) \u5230 (150, 50)\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjs\u5982\u4f55\u8bbe\u7f6e\u753b\u7b14\u5c3a\u5bf8\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u8981\u4f7f\u7528 javascript \u8bbe\u7f6e\u753b\u5e03\u753b\u7b14\u5c3a\u5bf8\uff0c\u9996\u5148\u83b7\u53d6\u753b\u5e03\u7684 2d \u4e0a\u4e0b\u6587\u5e76\u4f7f\u7528 setlinewidth() \u65b9\u6cd5\u8bbe\u7f6e\u753b\u7b14\u5bbd\u5ea6\uff1a\u83b7\u53d6\u753b\u5e03\u7684 2d \u4e0a\u4e0b\u6587\uff1aconst ctx = canvas.getcontext(“2d”);\u8bbe\u7f6e\u753b\u7b14\u5bbd\u5ea6\uff1actx.linewidth = 10; \u5982\u4f55\u4f7f\u7528 JavaScript \u8bbe\u7f6e\u753b\u5e03\u753b\u7b14\u5c3a\u5bf8 \u8981\u4f7f\u7528 JavaScript \u8bbe\u7f6e\u753b\u5e03\u753b\u7b14\u5c3a\u5bf8\uff0c\u53ef\u4ee5\u4f7f\u7528 canvas.getContext(“2d”) \u65b9\u6cd5\u83b7\u53d6\u753b\u5e03\u7684 2D \u4e0a\u4e0b\u6587\uff0c\u7136\u540e\u4f7f\u7528\u4e0a\u4e0b\u6587\u5bf9\u8c61\u7684 setLineWidth() \u65b9\u6cd5\u8bbe\u7f6e\u753b\u7b14\u5bbd\u5ea6\u3002 \u8be6\u7ec6\u6b65\u9aa4\uff1a \u83b7\u53d6\u753b\u5e03\u7684 2D \u4e0a\u4e0b\u6587\uff1a const ctx = canvas.getContext(“2d”); \u767b\u5f55\u540e\u590d\u5236 \u8bbe\u7f6e\u753b\u7b14\u5bbd\u5ea6\uff1a ctx.lineWidth = 10; \/\/ \u5c06\u753b\u7b14\u5bbd\u5ea6\u8bbe\u7f6e\u4e3a 10 \u50cf\u7d20 \u767b\u5f55\u540e\u590d\u5236 \u753b\u7b14\u5bbd\u5ea6\u4ee5\u50cf\u7d20\u4e3a\u5355\u4f4d\uff0c\u56e0\u6b64\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8bbe\u7f6e\u4efb\u4f55\u503c\u3002\u4f8b\u5982\uff0c\u8981\u5c06\u753b\u7b14\u5bbd\u5ea6\u8bbe\u7f6e\u4e3a 20 \u50cf\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a ctx.lineWidth = 20; \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\uff1a const canvas = […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3315","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3315","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=3315"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3315\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}