{"id":158166,"date":"2024-05-08T12:45:03","date_gmt":"2024-05-08T04:45:03","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/158166.html"},"modified":"2024-05-08T12:45:09","modified_gmt":"2024-05-08T04:45:09","slug":"%e5%a6%82%e4%bd%95%e7%b3%bb%e7%bb%9f%e7%9a%84%e5%ad%a6%e4%b9%a0javascript%e7%9a%84bom","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/158166.html","title":{"rendered":"\u5982\u4f55\u7cfb\u7edf\u7684\u5b66\u4e60JavaScript\u7684BOM"},"content":{"rendered":"

\"\u5982\u4f55\u7cfb\u7edf\u7684\u5b66\u4e60JavaScript\u7684BOM\"<\/p>\n

\u5982\u4f55\u7cfb\u7edf\u5730\u5b66\u4e60JavaScript\u7684BOM\uff1f\u9996\u5148\uff0c\u4f60\u9700\u8981\u4e86\u89e3BOM\u662f\u4ec0\u4e48\uff1aBOM\uff08Browser Object Model\uff09\u662f\u6d4f\u89c8\u5668\u5bf9\u8c61\u6a21\u578b\u7684\u7f29\u5199<\/strong>\uff0c\u5b83\u4e3aJavaScript\u63d0\u4f9b\u4e86\u4e0e\u6d4f\u89c8\u5668\u4ea4\u4e92\u7684\u63a5\u53e3\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u63a7\u5236\u6d4f\u89c8\u5668\u7a97\u53e3\u4e0e\u6846\u67b6\u3002\u7cfb\u7edf\u5b66\u4e60JavaScript\u7684BOM\uff0c\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u4e86\u89e3BOM\u6838\u5fc3\u5bf9\u8c61\u3001\u5b66\u4e60\u64cd\u4f5c\u6d4f\u89c8\u5668\u7a97\u53e3\u548c\u6846\u67b6\u7684\u65b9\u6cd5\u3001\u638c\u63e1\u5904\u7406\u6d4f\u89c8\u5668\u4e8b\u4ef6\u7684\u6280\u5de7\u3001\u719f\u6089\u5404\u79cdBOM\u63d0\u4f9b\u7684API\u3001\u4ee5\u53ca\u8de8\u6d4f\u89c8\u5668\u7684BOM\u4f7f\u7528\u7b56\u7565<\/strong>\u3002\u5728\u8fd9\u4e9b\u6b65\u9aa4\u4e2d\uff0c\u7279\u522b\u91cd\u8981\u7684\u662f\u4e86\u89e3BOM\u6838\u5fc3\u5bf9\u8c61<\/strong>\uff0c\u56e0\u4e3a\u5b83\u4eec\u662f\u4e0e\u6d4f\u89c8\u5668\u4ea4\u4e92\u7684\u57fa\u7840\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4e86\u89e3BOM\u6838\u5fc3\u5bf9\u8c61<\/h3>\n<\/p>\n

BOM\u7684\u6838\u5fc3\u5bf9\u8c61\u5305\u62ecwindow<\/code>\u3001navigator<\/code>\u3001screen<\/code>\u3001location<\/code>\u548chistory<\/code>\u3002\u6bcf\u4e2a\u5bf9\u8c61\u638c\u7ba1\u7740\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u529f\u80fd\u9886\u57df\u3002<\/p>\n<\/p>\n

Window\u5bf9\u8c61<\/h4>\n<\/p>\n

window<\/code>\u5bf9\u8c61\u662fBOM\u7684\u6838\u5fc3\uff0c\u5b83\u4ee3\u8868\u4e86\u6d4f\u89c8\u5668\u7684\u4e00\u4e2a\u5b9e\u4f8b\u3002\u5728JavaScript\u4e2d\uff0c\u6240\u6709\u7684\u5168\u5c40\u53d8\u91cf\u548c\u51fd\u6570\u90fd\u662fwindow<\/code>\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u901a\u8fc7\u5b66\u4e60window<\/code>\u5bf9\u8c61\uff0c\u53ef\u4ee5\u638c\u63e1\u5982\u4f55\u64cd\u4f5c\u6d4f\u89c8\u5668\u7a97\u53e3\u7684\u5c3a\u5bf8\u3001\u4f4d\u7f6e\uff0c\u4ee5\u53ca\u5982\u4f55\u5904\u7406\u7a97\u53e3\u4e8b\u4ef6\u7b49\u3002<\/p>\n<\/p>\n

Navigator\u5bf9\u8c61<\/h4>\n<\/p>\n

navigator<\/code>\u5bf9\u8c61\u5305\u542b\u6709\u5173\u6d4f\u89c8\u5668\u7684\u4fe1\u606f\uff0c\u6bd4\u5982\u7248\u672c\u548c\u751f\u4ea7\u5382\u5546\u3002\u901a\u8fc7\u4f7f\u7528navigator<\/code>\u5bf9\u8c61\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u4e86\u89e3\u7528\u6237\u6b63\u5728\u4f7f\u7528\u7684\u6d4f\u89c8\u5668\u79cd\u7c7b\uff0c\u5e76\u6839\u636e\u8fd9\u4e9b\u4fe1\u606f\u6765\u8c03\u6574\u7f51\u7ad9\u7684\u529f\u80fd\u6216\u5916\u89c2\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u5b66\u4e60\u64cd\u4f5c\u6d4f\u89c8\u5668\u7a97\u53e3\u548c\u6846\u67b6\u7684\u65b9\u6cd5<\/h3>\n<\/p>\n

JavaScript\u7684BOM\u5141\u8bb8\u5f00\u53d1\u8005\u5bf9\u6d4f\u89c8\u5668\u7a97\u53e3\u548c\u6846\u67b6\u8fdb\u884c\u5404\u79cd\u64cd\u4f5c\uff0c\u5305\u62ec\u6253\u5f00\u548c\u5173\u95ed\u7a97\u53e3\u3001\u8c03\u6574\u7a97\u53e3\u5927\u5c0f\u548c\u4f4d\u7f6e\u3001\u4ee5\u53ca\u5904\u7406\u5f39\u7a97\u7b49\u3002<\/p>\n<\/p>\n

\u7a97\u53e3\u64cd\u4f5c<\/h4>\n<\/p>\n

\u5b66\u4e60\u5982\u4f55\u4f7f\u7528window.open()<\/code>\u6765\u6253\u5f00\u65b0\u7a97\u53e3\uff0c\u7406\u89e3\u7a97\u53e3\u95f4\u7684\u7236\u5b50\u5173\u7cfb\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528window.close()<\/code>\u65b9\u6cd5\u5173\u95ed\u7a97\u53e3\u3002\u7406\u89e3\u4e0d\u540c\u6d4f\u89c8\u5668\u5bf9\u5f39\u7a97\u7684\u9650\u5236\u673a\u5236<\/strong>\u4e5f\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/p>\n

\u7a97\u53e3\u5927\u5c0f\u548c\u4f4d\u7f6e<\/h4>\n<\/p>\n

\u4e86\u89e3\u5982\u4f55\u83b7\u53d6\u548c\u8bbe\u7f6e\u7a97\u53e3\u7684\u5927\u5c0f\uff08innerWidth<\/code>\u3001innerHeight<\/code>\uff09\u4ee5\u53ca\u4f4d\u7f6e\uff08screenX<\/code>\u3001screenY<\/code>\uff09\uff0c\u5e76\u5e94\u7528\u8fd9\u4e9b\u77e5\u8bc6\u70b9\u63a7\u5236\u7a97\u53e3\u7684\u663e\u793a\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u638c\u63e1\u5904\u7406\u6d4f\u89c8\u5668\u4e8b\u4ef6\u7684\u6280\u5de7<\/h3>\n<\/p>\n

BOM\u63d0\u4f9b\u4e86\u5904\u7406\u5404\u79cd\u6d4f\u89c8\u5668\u4e8b\u4ef6\u7684\u65b9\u6cd5\uff0c\u5982onload<\/code>\u3001onresize<\/code>\u3001onscroll<\/code>\u7b49\uff0c\u8fd9\u4e9b\u4e8b\u4ef6\u5bf9\u589e\u5f3a\u7528\u6237\u4f53\u9a8c\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/p>\n

\u52a0\u8f7d\u4e8b\u4ef6<\/h4>\n<\/p>\n

\u4e86\u89e3window.onload<\/code>\u4e8b\u4ef6\u548c\u5b83\u7684\u4f7f\u7528\u65f6\u673a\uff0c\u8fd9\u5bf9\u4e8e\u786e\u4fdd\u9875\u9762\u5b8c\u5168\u8f7d\u5165\u540e\u518d\u6267\u884c\u811a\u672c\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<\/p>\n

\u7a97\u53e3\u548c\u9875\u9762\u4e8b\u4ef6<\/h4>\n<\/p>\n

\u638c\u63e1\u5176\u4ed6\u7a97\u53e3\u4e8b\u4ef6\uff0c\u6bd4\u5982\u5f53\u7528\u6237\u8c03\u6574\u7a97\u53e3\u5927\u5c0f\u65f6\u89e6\u53d1\u7684onresize<\/code>\u4e8b\u4ef6\uff0c\u4ee5\u53ca\u9875\u9762\u6eda\u52a8\u65f6\u89e6\u53d1\u7684onscroll<\/code>\u4e8b\u4ef6\uff0c\u5e76\u5b66\u4f1a\u5982\u4f55\u6709\u6548\u5730\u4f7f\u7528\u5b83\u4eec\u6765\u521b\u5efa\u52a8\u6001\u7684\u3001\u54cd\u5e94\u5f0f\u7684\u7f51\u9875\u3002<\/p>\n<\/p>\n

\u56db\u3001\u719f\u6089\u5404\u79cdBOM\u63d0\u4f9b\u7684API<\/h3>\n<\/p>\n

\u9664\u4e86\u524d\u8ff0\u7684\u57fa\u672c\u5bf9\u8c61\u548c\u65b9\u6cd5\u4e4b\u5916\uff0cBOM\u8fd8\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684API\uff0c\u6bd4\u5982\u5012\u8ba1\u65f6\u5668API\uff08setTimeout<\/code>\u3001setInterval<\/code>\uff09\uff0c\u5b9a\u4f4dAPI\uff08geolocation<\/code>\uff09\uff0c\u672c\u5730\u5b58\u50a8API\uff08localStorage<\/code>\u548csessionStorage<\/code>\uff09\u7b49\u3002<\/p>\n<\/p>\n

\u8ba1\u65f6\u5668API<\/h4>\n<\/p>\n

\u5b9a\u65f6\u5668\u529f\u80fd\u5141\u8bb8\u5728\u8bbe\u5b9a\u65f6\u95f4\u540e\u6267\u884c\u4ee3\u7801\uff0c\u6216\u8005\u6309\u7167\u95f4\u9694\u91cd\u590d\u6267\u884c\u4ee3\u7801\u3002\u5b66\u4e60\u5982\u4f55\u4f7f\u7528setTimeout<\/code>\u548csetInterval<\/code>\u51fd\u6570\uff0c\u5e76\u4e86\u89e3\u5982\u4f55\u4f7f\u7528clearTimeout<\/code>\u548cclearInterval<\/code>\u6765\u53d6\u6d88\u8fd9\u4e9b\u64cd\u4f5c\u3002<\/p>\n<\/p>\n

\u5b58\u50a8API<\/h4>\n<\/p>\n

\u672c\u5730\u5b58\u50a8API\u63d0\u4f9b\u4e86\u5728\u7528\u6237\u672c\u5730\u4fdd\u6301\u6570\u636e\u7684\u65b9\u6cd5\uff0c\u8fd9\u5bf9\u4e8e\u521b\u5efa\u65e0\u9700\u6bcf\u6b21\u8bf7\u6c42\u670d\u52a1\u5668\u7684\u5e94\u7528\u7a0b\u5e8f\u975e\u5e38\u6709\u7528\u3002\u638c\u63e1\u5982\u4f55\u4f7f\u7528localStorage<\/code>\u548csessionStorage<\/code>\u5b58\u50a8\u3001\u68c0\u7d22\u548c\u5220\u9664\u6570\u636e\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u8de8\u6d4f\u89c8\u5668\u7684BOM\u4f7f\u7528\u7b56\u7565<\/h3>\n<\/p>\n

\u867d\u7136\u73b0\u4ee3\u6d4f\u89c8\u5668\u5728BOM\u5b9e\u73b0\u4e0a\u8d8b\u4e8e\u7edf\u4e00\uff0c\u4f46\u4ecd\u5b58\u5728\u4e00\u4e9b\u5dee\u5f02\u3002\u4e86\u89e3\u8de8\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u95ee\u9898<\/strong>\u4ee5\u53ca\u5982\u4f55\u901a\u8fc7\u7279\u6027\u68c0\u6d4b\u3001\u7528\u6237\u4ee3\u7406\u55c5\u63a2\u548c\u6761\u4ef6\u6ce8\u91ca\u7b49\u6280\u672f\u6765\u5904\u7406\u8fd9\u4e9b\u5dee\u5f02\u3002<\/p>\n<\/p>\n

\u7279\u6027\u68c0\u6d4b<\/h4>\n<\/p>\n

\u5b66\u4e60\u5982\u4f55\u68c0\u6d4b\u6d4f\u89c8\u5668\u5bf9\u67d0\u4e00\u7279\u6027\u662f\u5426\u652f\u6301\uff0c\u800c\u4e0d\u662f\u4f9d\u8d56\u7528\u6237\u4ee3\u7406\u5b57\u7b26\u4e32\uff0c\u56e0\u4e3a\u8fd9\u6837\u53ef\u4ee5\u66f4\u53ef\u9760\u5730\u4e3a\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u63d0\u4f9b\u76f8\u5e94\u7684\u529f\u80fd\u548c\u4f53\u9a8c\u3002<\/p>\n<\/p>\n

\u517c\u5bb9\u6027\u7f16\u7801\u51c6\u5219<\/h4>\n<\/p>\n

\u4e86\u89e3\u5982\u4f55\u7f16\u5199\u5065\u58ee\u7684\u4ee3\u7801\uff0c\u786e\u4fdd\u5b83\u5728\u4e0d\u540c\u7684\u6d4f\u89c8\u5668\u4e2d\u90fd\u80fd\u6b63\u5e38\u5de5\u4f5c\uff0c\u4f8b\u5982\u907f\u514d\u4f7f\u7528\u5df2\u7ecf\u5e9f\u5f03\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u4ee5\u53ca\u4f7f\u7528\u7edf\u4e00\u7684\u4e8b\u4ef6\u5904\u7406\u6a21\u578b\u7b49\u3002<\/p>\n<\/p>\n

\u901a\u8fc7\u7cfb\u7edf\u5316\u5730\u5b66\u4e60\u4ee5\u4e0a\u63d0\u5230\u7684\u5185\u5bb9\uff0c\u4f60\u5c06\u80fd\u591f\u638c\u63e1\u4f7f\u7528JavaScript\u7684BOM\u4e0e\u6d4f\u89c8\u5668\u8fdb\u884c\u6709\u6548\u4ea4\u4e92\u7684\u6280\u80fd\u3002\u4e00\u6b65\u6b65\u5730\u6784\u5efa\u4f60\u5bf9BOM\u7684\u7406\u89e3\uff0c\u5e76\u7ed3\u5408\u5b9e\u8df5\uff0c\u53ef\u4ee5\u63d0\u5347\u4f60\u4f5c\u4e3a\u524d\u7aef\u5f00\u53d1\u8005\u7684\u80fd\u529b\u3002<\/p>\n<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

\u4ec0\u4e48\u662fJavaScript\u7684BOM\uff1f<\/strong><\/p>\n

JavaScript\u7684BOM\uff08\u6d4f\u89c8\u5668\u5bf9\u8c61\u6a21\u578b\uff09\u662f\u4e00\u7ec4\u4e0e\u6d4f\u89c8\u5668\u4ea4\u4e92\u7684API\uff0c\u5b83\u53ef\u4ee5\u8ba9\u5f00\u53d1\u8005\u64cd\u63a7\u548c\u64cd\u4f5c\u6d4f\u89c8\u5668\u7a97\u53e3\uff0c\u6587\u6863\u548c\u5176\u4ed6\u5143\u7d20\u3002\u5b83\u63d0\u4f9b\u4e86\u8bb8\u591a\u529f\u80fd\uff0c\u4f8b\u5982\u8bbf\u95ee\u548c\u63a7\u5236\u6d4f\u89c8\u5668\u7684\u5386\u53f2\u8bb0\u5f55\uff0c\u64cd\u4f5c\u7a97\u53e3\u5927\u5c0f\u548c\u4f4d\u7f6e\uff0c\u4ee5\u53ca\u4e0e\u7528\u6237\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n

\u5982\u4f55\u7cfb\u7edf\u5730\u5b66\u4e60JavaScript\u7684BOM\uff1f<\/strong><\/p>\n

\u8981\u7cfb\u7edf\u5730\u5b66\u4e60JavaScript\u7684BOM\uff0c\u4f60\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n

    \n
  1. \n

    \u4e86\u89e3BOM\u7684\u57fa\u672c\u6982\u5ff5\uff1a\u5b66\u4e60BOM\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u4e86\u89e3\u5b83\u7684\u7ec4\u6210\u90e8\u5206\u548c\u63d0\u4f9b\u7684\u529f\u80fd\u3002<\/p>\n<\/li>\n

  2. \n

    \u5b66\u4e60\u5e38\u7528\u7684BOM\u5bf9\u8c61\u548c\u5c5e\u6027\uff1a\u719f\u6089\u5e38\u7528\u7684BOM\u5bf9\u8c61\uff0c\u4f8b\u5982window\u5bf9\u8c61\u3001document\u5bf9\u8c61\u548cnavigator\u5bf9\u8c61\uff0c\u4ee5\u53ca\u5b83\u4eec\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<\/li>\n

  3. \n

    \u638c\u63e1BOM\u7684\u5e38\u89c1\u5e94\u7528\u573a\u666f\uff1a\u5b66\u4e60\u5982\u4f55\u4f7f\u7528BOM\u6765\u64cd\u4f5c\u6d4f\u89c8\u5668\u7a97\u53e3\u3001\u5904\u7406\u9875\u9762\u8df3\u8f6c\u3001\u83b7\u53d6\u7528\u6237\u7684\u5730\u7406\u4f4d\u7f6e\u4fe1\u606f\u7b49\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/li>\n

  4. \n

    \u6df1\u5165\u4e86\u89e3BOM\u7684\u9ad8\u7ea7\u529f\u80fd\uff1a\u8fdb\u4e00\u6b65\u5b66\u4e60BOM\u63d0\u4f9b\u7684\u9ad8\u7ea7\u529f\u80fd\uff0c\u4f8b\u5982\u64cd\u4f5c\u6d4f\u89c8\u5668\u7684\u5386\u53f2\u8bb0\u5f55\u3001\u63a7\u5236\u6d4f\u89c8\u5668\u7684\u5f39\u7a97\u548c\u5bf9\u8bdd\u6846\u7b49\u3002<\/p>\n<\/li>\n

  5. \n

    \u642d\u914d\u5b9e\u8df5\u9879\u76ee\uff1a\u901a\u8fc7\u5b9e\u8df5\u9879\u76ee\u6765\u5e94\u7528\u6240\u5b66\u7684BOM\u77e5\u8bc6\uff0c\u4f8b\u5982\u521b\u5efa\u4e00\u4e2a\u6d4f\u89c8\u5668\u63d2\u4ef6\u6216\u8005\u5f00\u53d1\u4e00\u4e2a\u57fa\u4e8eBOM\u7684\u7f51\u9875\u6e38\u620f\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u5982\u4f55\u6709\u6548\u5730\u8bb0\u5fc6\u548c\u8fd0\u7528JavaScript\u7684BOM\u77e5\u8bc6\uff1f<\/strong><\/p>\n

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      \n
    1. \n

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    2. \n

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    3. \n

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    4. \n

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