{"id":1557,"date":"2024-11-10T15:29:28","date_gmt":"2024-11-10T07:29:28","guid":{"rendered":"https:\/\/fwq.ai\/blog\/1557\/"},"modified":"2024-11-10T15:29:28","modified_gmt":"2024-11-10T07:29:28","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e5%a4%9a%e6%ac%a1%e7%82%b9%e5%87%bb%e6%8c%89%e9%92%ae%e4%bc%9a%e8%a7%a6%e5%8f%91%e4%b8%8d%e5%90%8c%e7%9a%84%e5%87%bd%e6%95%b0%ef%bc%8c%e8%80%8c%e4%b8%8d%e6%98%af%e5%90%8c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/1557\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u591a\u6b21\u70b9\u51fb\u6309\u94ae\u4f1a\u89e6\u53d1\u4e0d\u540c\u7684\u51fd\u6570\uff0c\u800c\u4e0d\u662f\u540c\u4e00\u4e2a\u51fd\u6570\uff1f"},"content":{"rendered":"

\"\u4e3a\u4ec0\u4e48\u591a\u6b21\u70b9\u51fb\u6309\u94ae\u4f1a\u89e6\u53d1\u4e0d\u540c\u7684\u51fd\u6570\uff0c\u800c\u4e0d\u662f\u540c\u4e00\u4e2a\u51fd\u6570\uff1f\u63d2\u56fe\"<\/p>\n

\u7406\u89e3\u6309\u94ae\u591a\u6b21\u70b9\u51fb\u89e6\u53d1\u51fd\u6570\u7684\u673a\u5236<\/strong><\/p>\n

\u5728 html \u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4e3a\u4e09\u4e2a\u6309\u94ae\u6307\u5b9a\u4e86\u76f8\u540c\u7684\u5904\u7406\u7a0b\u5e8f my_function()\uff1a<\/p>\n

<button onclick='my_function()'>\u6309\u94ae1<\/button>\n<button onclick='my_function()'>\u6309\u94ae2<\/button>\n<button onclick='my_function()'>\u6309\u94ae3<\/button><\/pre>\n
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\u5f53\u70b9\u51fb\u4efb\u4f55\u4e00\u4e2a\u6309\u94ae\u65f6\uff0c\u90fd\u4f1a\u89e6\u53d1 my_function() \u51fd\u6570\u3002\u7136\u800c\uff0c\u5982\u679c\u4f60\u89c2\u5bdf\u7b2c\u4e8c\u4e2a\u4ee3\u7801\u7247\u6bb5\u4e2d\u6dfb\u52a0\u4e86 my_function() \u8c03\u7528\u7684 javascript \u90e8\u5206\uff1a<\/p>\n
function my_function() {\n  var str=document.getElementsByTagName('button')\n  for(var i=0;i<str.length;i++) {\n    var myfn=function(a) {\n      var c=0;\n      str[a].onclick=function() {\n        c++\n        alert(\"\u70b9\u51fb\u6b21\u6570\u4e3a\uff1a\"+c)\n      }\n    }(i)\n  }\n}\n\nmy_function()<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f60\u4f1a\u53d1\u73b0\u70b9\u51fb\u6309\u94ae\u540e\uff0c\u4e0d\u4f1a\u7acb\u5373\u6267\u884c my_function() \u51fd\u6570\uff0c\u800c\u662f\u521b\u5efa\u4e86\u51e0\u4e2a\u533f\u540d\u7684\u5185\u90e8\u51fd\u6570\uff0c\u5e76\u4e14\u6bcf\u4e2a\u6309\u94ae\u7684\u70b9\u51fb\u4e8b\u4ef6\u90fd\u7ed1\u5b9a\u5230\u8fd9\u4e9b\u5185\u90e8\u51fd\u6570\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n
    \n
  •  \uff1a<\/strong>\u5728 javascript \u4e2d\uff0c\u4e8b\u4ef6\u4f1a\u4ece\u76ee\u6807\u5143\u7d20\u5411\u5176\u7956\u5148\u5143\u7d20\u201c\u5192\u6ce1\u201d\u3002\u56e0\u6b64\uff0c\u5f53\u4e00\u4e2a\u6309\u94ae\u88ab\u70b9\u51fb\u65f6\uff0c\u5b83\u7684 click \u4e8b\u4ef6\u4f1a\u5192\u6ce1\u5230\u5176\u7236\u5143\u7d20 body\u3002<\/li>\n
  •  \u4e8b\u4ef6\u7ed1\u5b9a\uff1a<\/strong>\u5f53 my_function() \u5728\u9875\u9762\u52a0\u8f7d\u65f6\u88ab\u8c03\u7528\u65f6\uff0c\u5b83\u4e3a\u6bcf\u4e2a\u6309\u94ae\u7ed1\u5b9a\u4e86\u81ea\u5b9a\u4e49\u7684\u5904\u7406\u7a0b\u5e8f\u3002\u4e0e\u76f4\u63a5\u7ed1\u5b9a\u5230 my_function() \u4e0d\u540c\uff0c\u81ea\u5b9a\u4e49\u5904\u7406\u7a0b\u5e8f\u5305\u542b\u4e00\u4e2a\u95ed\u5305\uff0c\u8be5\u95ed\u5305\u53ef\u4ee5\u8bbf\u95ee\u6309\u94ae\u7684\u7d22\u5f15\u503c i\u3002\u8fd9\u5141\u8bb8\u6bcf\u4e2a\u6309\u94ae\u8ddf\u8e2a\u5b83\u81ea\u5df1\u7684\u70b9\u51fb\u6b21\u6570\u3002<\/li>\n<\/ul>\n
    alert(my_function()) \u8fd4\u56de undefined \u7684\u539f\u56e0<\/strong><\/p>\n
    \u5f53\u4f60\u8c03\u7528 alert(my_function()) \u65f6\uff0c\u5b83\u4f1a\u5f39\u51fa “undefined”\uff0c\u56e0\u4e3a my_function() \u51fd\u6570\u6ca1\u6709\u6307\u5b9a\u4efb\u4f55\u8fd4\u56de\u503c\u3002\u56e0\u6b64\uff0c\u5f53 javascript \u5f15\u64ce\u8bc4\u4f30\u51fd\u6570\u65f6\uff0c\u8fd4\u56de\u7684\u662f undefined\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u4e3a\u4ec0\u4e48\u591a\u6b21\u70b9\u51fb\u6309\u94ae\u4f1a\u89e6\u53d1\u4e0d\u540c\u7684\u51fd\u6570\uff0c\u800c\u4e0d\u662f\u540c\u4e00\u4e2a\u51fd\u6570\uff1f\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":"
    \u7406\u89e3\u6309\u94ae\u591a\u6b21\u70b9\u51fb\u89e6\u53d1\u51fd\u6570\u7684\u673a\u5236 \u5728 html \u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4e3a\u4e09\u4e2a\u6309\u94ae\u6307\u5b9a\u4e86\u76f8\u540c\u7684\u5904\u7406\u7a0b\u5e8f my_function()\uff1a <button onclick=’my_function()’>\u6309\u94ae1<\/button> <button onclick=’my_function()’>\u6309\u94ae2<\/button> <button onclick=’my_function()’>\u6309\u94ae3<\/button> \u767b\u5f55\u540e\u590d\u5236 \u5f53\u70b9\u51fb\u4efb\u4f55\u4e00\u4e2a\u6309\u94ae\u65f6\uff0c\u90fd\u4f1a\u89e6\u53d1 my_function() \u51fd\u6570\u3002\u7136\u800c\uff0c\u5982\u679c\u4f60\u89c2\u5bdf\u7b2c\u4e8c\u4e2a\u4ee3\u7801\u7247\u6bb5\u4e2d\u6dfb\u52a0\u4e86 my_function() \u8c03\u7528\u7684 javascript \u90e8\u5206\uff1a function my_function() { var str=document.getElementsByTagName(‘button’) for(var i=0;i<str.length;i++) { var myfn=function(a) { var c=0; str[a].onclick=function() { c++ alert(“\u70b9\u51fb\u6b21\u6570\u4e3a\uff1a”+c) } }(i) } } my_function() \u767b\u5f55\u540e\u590d\u5236 \u4f60\u4f1a\u53d1\u73b0\u70b9\u51fb\u6309\u94ae\u540e\uff0c\u4e0d\u4f1a\u7acb\u5373\u6267\u884c my_function() \u51fd\u6570\uff0c\u800c\u662f\u521b\u5efa\u4e86\u51e0\u4e2a\u533f\u540d\u7684\u5185\u90e8\u51fd\u6570\uff0c\u5e76\u4e14\u6bcf\u4e2a\u6309\u94ae\u7684\u70b9\u51fb\u4e8b\u4ef6\u90fd\u7ed1\u5b9a\u5230\u8fd9\u4e9b\u5185\u90e8\u51fd\u6570\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u539f\u56e0\u5982\u4e0b\uff1a \uff1a\u5728 javascript \u4e2d\uff0c\u4e8b\u4ef6\u4f1a\u4ece\u76ee\u6807\u5143\u7d20\u5411\u5176\u7956\u5148\u5143\u7d20\u201c\u5192\u6ce1\u201d\u3002\u56e0\u6b64\uff0c\u5f53\u4e00\u4e2a\u6309\u94ae\u88ab\u70b9\u51fb\u65f6\uff0c\u5b83\u7684 click \u4e8b\u4ef6\u4f1a\u5192\u6ce1\u5230\u5176\u7236\u5143\u7d20 body\u3002 \u4e8b\u4ef6\u7ed1\u5b9a\uff1a\u5f53 my_function() \u5728\u9875\u9762\u52a0\u8f7d\u65f6\u88ab\u8c03\u7528\u65f6\uff0c\u5b83\u4e3a\u6bcf\u4e2a\u6309\u94ae\u7ed1\u5b9a\u4e86\u81ea\u5b9a\u4e49\u7684\u5904\u7406\u7a0b\u5e8f\u3002\u4e0e\u76f4\u63a5\u7ed1\u5b9a\u5230 my_function() […]<\/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-1557","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/1557","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=1557"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/1557\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=1557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=1557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=1557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}