{"id":3409,"date":"2024-11-10T09:00:55","date_gmt":"2024-11-10T01:00:55","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3409\/"},"modified":"2024-11-10T09:00:55","modified_gmt":"2024-11-10T01:00:55","slug":"js%e5%a6%82%e4%bd%95%e5%bc%95%e5%85%a5js%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3409\/","title":{"rendered":"js\u5982\u4f55\u5f15\u5165js\u6587\u4ef6"},"content":{"rendered":"

\n \u4f60\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5728 javascript \u4e2d\u5f15\u5165\u5916\u90e8 js \u6587\u4ef6\uff1a\u4f7f\u7528 \u6807\u7b7e\uff0c\u8bbe\u7f6e src \u5c5e\u6027\u4e3a\u6587\u4ef6\u8def\u5f84\u3002\u4f7f\u7528 async \u6216 defer \u5c5e\u6027\u4f18\u5316\u52a0\u8f7d\u987a\u5e8f\u3002\u4f7f\u7528 import() \u65b9\u6cd5\u52a8\u6001\u52a0\u8f7d\u6587\u4ef6\u3002\u5728 commonjs \u73af\u5883\u4e2d\u4f7f\u7528 require() \u51fd\u6570\u52a0\u8f7d\u6587\u4ef6\u3002\u8bf7\u786e\u4fdd\u6587\u4ef6\u8def\u5f84\u6b63\u786e\uff0c\u907f\u514d\u5728\u9875\u9762\u52a0\u8f7d\u521d\u671f\u52a0\u8f7d\u8fc7\u591a\u811a\u672c\uff0c\u5e76\u6839\u636e\u9700\u8981\u9009\u62e9\u5408\u9002\u7684\u52a0\u8f7d\u65b9\u6cd5\u3002\n<\/p><\/blockquote>\n

\"js\u5982\u4f55\u5f15\u5165js\u6587\u4ef6\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u4f7f\u7528 JavaScript \u5f15\u5165\u5916\u90e8 JS \u6587\u4ef6<\/strong><\/p>\n

\u5f15\u5165\u5916\u90e8 JS \u6587\u4ef6\u53ef\u4ee5\u8ba9\u4f60\u7684\u4ee3\u7801\u7ec4\u7ec7\u66f4\u6e05\u6670\uff0c\u5e76\u63d0\u9ad8\u6027\u80fd\u3002\u4ee5\u4e0b\u662f JavaScript \u4e2d\u5f15\u5165\u5916\u90e8 JS \u6587\u4ef6\u7684\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528 <script> \u6807\u7b7e<\/script><\/strong><\/p>\n

\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 <script> \u6807\u7b7e\u3002\u53ea\u9700\u5c06 src \u5c5e\u6027\u8bbe\u7f6e\u4e3a\u5916\u90e8 JS \u6587\u4ef6\u7684\u8def\u5f84\uff1a<\/script><\/p>\n

<script src=\"my-script.js\"><\/script><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
2. \u4f7f\u7528 async \u548c defer \u5c5e\u6027<\/strong><\/p>\n
async \u548c defer \u5c5e\u6027\u53ef\u4ee5\u4f18\u5316\u811a\u672c\u7684\u52a0\u8f7d\u6027\u80fd\uff1a<\/p>\n
    \n
  • async: \u6d4f\u89c8\u5668\u4f1a\u5728\u52a0\u8f7d\u9875\u9762\u5185\u5bb9\u7684\u540c\u65f6\u52a0\u8f7d\u811a\u672c\uff0c\u4f46\u4e0d\u4f1a\u7b49\u5230\u811a\u672c\u6267\u884c\u5b8c\u6bd5\u540e\u518d\u7ee7\u7eed\u52a0\u8f7d\u9875\u9762\u3002<\/li>\n
  • defer: \u6d4f\u89c8\u5668\u4f1a\u5728 DOMContentLoaded \u4e8b\u4ef6\u89e6\u53d1\u540e\u52a0\u8f7d\u811a\u672c\uff0c\u786e\u4fdd\u811a\u672c\u5728 DOM \u52a0\u8f7d\u5b8c\u6210\u540e\u624d\u6267\u884c\u3002<\/li>\n<\/ul>\n
    <script src=\"my-script.js\" async><\/script>\n<script src=\"my-script.js\" defer><\/script><\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    3. \u4f7f\u7528 import()<\/strong><\/p>\n
    ES6 \u4e2d\u5f15\u5165\u4e86 import() \u65b9\u6cd5\uff0c\u53ef\u4ee5\u52a8\u6001\u52a0\u8f7d JS \u6587\u4ef6\uff1a<\/p>\n
    import('.\/my-script.js')\n  .then(module => {\n    \/\/ \u811a\u672c\u52a0\u8f7d\u5b8c\u6bd5\u540e\u6267\u884c\u4ee3\u7801\n  })\n  .catch(error => {\n    \/\/ \u52a0\u8f7d\u811a\u672c\u5931\u8d25\u65f6\u7684\u5904\u7406\u903b\u8f91\n  });<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    4. \u4f7f\u7528 CommonJS \u6a21\u5757<\/strong><\/p>\n
    \u5982\u679c\u4f60\u4f7f\u7528\u7684\u662f Node.js \u6216\u5176\u4ed6 CommonJS \u73af\u5883\uff0c\u53ef\u4ee5\u4f7f\u7528 require() \u51fd\u6570\u52a0\u8f7d JS \u6587\u4ef6\uff1a<\/p>\n
    const myScript = require('.\/my-script.js');\n\/\/ \u8bbf\u95ee\u811a\u672c\u4e2d\u7684\u53d8\u91cf\u548c\u51fd\u6570<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    \u6ce8\u610f\uff1a<\/strong><\/p>\n
      \n
    • \u786e\u4fdd\u5916\u90e8 JS \u6587\u4ef6\u7684\u8def\u5f84\u6b63\u786e\u3002<\/li>\n
    • \u5c3d\u91cf\u907f\u514d\u5728 \u4e2d\u52a0\u8f7d\u8fc7\u591a\u7684\u811a\u672c\uff0c\u8fd9\u4f1a\u963b\u585e\u9875\u9762\u7684\u6e32\u67d3\u3002<\/li>\n
    • \u4f7f\u7528\u9002\u5f53\u7684\u52a0\u8f7d\u65b9\u6cd5\uff0c\u5982 async \u6216 defer\uff0c\u4ee5\u4f18\u5316\u6027\u80fd\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662fjs\u5982\u4f55\u5f15\u5165js\u6587\u4ef6\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":"
      \u4f60\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5728 javascript \u4e2d\u5f15\u5165\u5916\u90e8 js \u6587\u4ef6\uff1a\u4f7f\u7528 \u6807\u7b7e\uff0c\u8bbe\u7f6e src \u5c5e\u6027\u4e3a\u6587\u4ef6\u8def\u5f84\u3002\u4f7f\u7528 async \u6216 defer \u5c5e\u6027\u4f18\u5316\u52a0\u8f7d\u987a\u5e8f\u3002\u4f7f\u7528 import() \u65b9\u6cd5\u52a8\u6001\u52a0\u8f7d\u6587\u4ef6\u3002\u5728 commonjs \u73af\u5883\u4e2d\u4f7f\u7528 require() \u51fd\u6570\u52a0\u8f7d\u6587\u4ef6\u3002\u8bf7\u786e\u4fdd\u6587\u4ef6\u8def\u5f84\u6b63\u786e\uff0c\u907f\u514d\u5728\u9875\u9762\u52a0\u8f7d\u521d\u671f\u52a0\u8f7d\u8fc7\u591a\u811a\u672c\uff0c\u5e76\u6839\u636e\u9700\u8981\u9009\u62e9\u5408\u9002\u7684\u52a0\u8f7d\u65b9\u6cd5\u3002 \u5982\u4f55\u4f7f\u7528 JavaScript \u5f15\u5165\u5916\u90e8 JS \u6587\u4ef6 \u5f15\u5165\u5916\u90e8 JS \u6587\u4ef6\u53ef\u4ee5\u8ba9\u4f60\u7684\u4ee3\u7801\u7ec4\u7ec7\u66f4\u6e05\u6670\uff0c\u5e76\u63d0\u9ad8\u6027\u80fd\u3002\u4ee5\u4e0b\u662f JavaScript \u4e2d\u5f15\u5165\u5916\u90e8 JS \u6587\u4ef6\u7684\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 <script> \u6807\u7b7e<\/script> \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 <script> \u6807\u7b7e\u3002\u53ea\u9700\u5c06 src \u5c5e\u6027\u8bbe\u7f6e\u4e3a\u5916\u90e8 JS \u6587\u4ef6\u7684\u8def\u5f84\uff1a<\/script> <script src=”my-script.js”><\/script> \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 async \u548c defer \u5c5e\u6027 async \u548c defer \u5c5e\u6027\u53ef\u4ee5\u4f18\u5316\u811a\u672c\u7684\u52a0\u8f7d\u6027\u80fd\uff1a async: […]<\/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-3409","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3409","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=3409"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3409\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3409"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3409"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3409"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}