{"id":88211,"date":"2020-02-09T02:08:27","date_gmt":"2020-02-08T18:08:27","guid":{"rendered":"http:\/\/4563.org\/?p=88211"},"modified":"2020-02-09T02:08:27","modified_gmt":"2020-02-08T18:08:27","slug":"%e5%89%8d%e7%ab%af%e6%ad%a3%e5%88%99%e8%a1%a8%e8%be%be%e5%bc%8f%e7%9a%84%e8%a7%84%e5%88%99%e6%98%af%e4%b8%8d%e6%98%af%e5%8f%98%e6%9b%b4%e8%bf%87%e4%ba%86%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=88211","title":{"rendered":"\u524d\u7aef\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u89c4\u5219\u662f\u4e0d\u662f\u53d8\u66f4\u8fc7\u4e86\uff1f"},"content":{"rendered":"
\n
\n
\n

\u524d\u7aef\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u89c4\u5219\u662f\u4e0d\u662f\u53d8\u66f4\u8fc7\u4e86\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : igoist <\/span> <\/i> 21<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

MDN \u4e0a\u5bf9\u4e8e RegExp \u7684 Description \u5e95\u90e8\u5982\u6b64\u5199\u5230\uff1a<\/p>\n

For example, the following are equivalent:<\/p>\n

let re = \/w+\/ let re = new RegExp(‘w+’)<\/p>\n

\u8d77\u56e0\u662f\u4eca\u5929\u4fee\u4e86\u4e2a bug\uff0c\u9879\u76ee\u4e2d\u67d0\u9875\u9762\u6709\u4e00\u5806\u6309\u94ae<\/p>\n

\u8fd9\u4e9b\u6309\u94ae\u7684\u7c7b\u540d\u90fd\u7c7b\u4f3c\u4e8e goto-aaa goto-bbb goto-ccc<\/p>\n

\u5199\u4e8e 16 \u5e74\u7684\u4ee3\u7801\u662f\u901a\u8fc7 btn.className.match(\/goto-(S+)\/)[1] \u6765\u5339\u914d\u83b7\u53d6\u5230 aaa \u3001bbb \u3001ccc<\/p>\n

\u4ee5\u524d\u5e94\u8be5\u662f\u6ca1\u95ee\u9898\u7684\uff0c\u5982\u4eca\u5c31\u540c ‘goto-aaa’.match(\/goto-(S+)\/) \u5339\u914d\u7ed3\u679c\u4e3a null \u4e00\u6837\uff0c\u4f1a\u76f4\u63a5\u62a5\u9519<\/p>\n

\u8c03\u6574\u4e3a ‘goto-aaa’.match(\/goto-(S+)\/)[1] \u5c31\u53ef\u4ee5\u89e3\u51b3\u95ee\u9898<\/p>\n

\u4f46\u8fd8\u662f\u633a\u597d\u5947\u7684\uff0c\u60f3\u770b\u770b\u6709\u6ca1\u6709\u7ecf\u5e38\u5728\u7528\u5728\u5173\u6ce8\u6b63\u5219\u8fd9\u5757\u7684\u5927\u4f6c\u5e2e\u5fd9\u89e3\u89e3\u60d1\uff0c\u662f\u4e0d\u662f\u771f\u7684\u6709\u53d8\u66f4\uff0c\u4ee5\u53ca\u8981\u662f\u53d8\u66f4\u4e86\uff0c<\/p>\n

\u9664 \u548c \u5916\uff0c\u8fd8\u6709\u54ea\u4e9b\u53d8\u66f4\uff0c\u5728\u54ea\u91cc\u53ef\u4ee5\u770b\u5230\uff0c\u8c22\u8c22\uff01<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (3<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : autoxbc <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    Web \u4e00\u5411\u662f\u6e10\u8fdb\u7684\uff0c\u4e0d\u4f1a\u6709\u7834\u574f\u6027\u7684\u53d8\u66f4<\/p>\n

    \u4e3b\u8d34\u7684
    For example, the following are equivalent:
    let re = \/w+\/ let re = new RegExp(‘w+’)<\/p>\n

    MDN \u5b9e\u9645\u662f\u8fd9\u4e48\u5199\u7684
    For example, the following are equivalent:
    let re = \/w+\/
    let re = new RegExp(‘\\w+’)<\/p>\n

    https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/JavaScript\/Reference\/Global_Objects\/RegExp<\/p>\n

    >> \u5199\u4e8e 16 \u5e74\u7684\u4ee3\u7801\u662f\u901a\u8fc7 btn.className.match(\/goto-(S+)\/)[1] …
    >> \u8c03\u6574\u4e3a ‘goto-aaa’.match(\/goto-(S+)\/)[1] \u5c31\u53ef\u4ee5\u89e3\u51b3\u95ee\u9898<\/p>\n

    \u8fd9\u4e24\u4e2a\u6b63\u5219\u4e0d\u662f\u5b8c\u5168\u4e00\u6837\uff1f <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : igoist <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @autoxbc<\/p>\n

    \u5bf9\u7684\uff0c\u8fd9\u4fe9\u662f\u4e00\u6837\u7684\uff0c\u6211\u672c\u6765\u5c31\u662f\u590d\u5236\u8fc7\u6765\u6709\u6362\u884c\uff0c\u53d1\u51fa\u6765\u4e4b\u540e\u53d8\u4e86\u7a7a\u683c<\/p>\n

    \u4e0d\u597d\u610f\u601d\u7684\u662f\u4e0a\u9762\u88ab\u6211\u8d34\u9519\u4e86<\/p>\n

    \u539f\u6765\u7684\u4ee3\u7801\u4e00\u76f4\u90fd\u662f btn.className.match(\/goto-(\\S+)\/)[1] <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : igoist <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @autoxbc <\/p>\n

    \u201c\u9664 \u548c \u5916\u201d \u5176\u5b9e\u6211\u53d1\u7684\u65f6\u5019\u4e5f\u662f\u4e00\u4e2a\u4f46\u659c\u6760 \u8fd8\u6709\u4e00\u4e2a\u53cc\u659c\u6760\uff0c\u6587\u672c\u88ab\u8fc7\u6ee4\u4e86\uff0c\u5f53\u65f6\u6ca1\u8003\u8651\u5230\uff0c\u53d1\u5b8c\u4e5f\u6ca1\u4ed4\u7ec6\u770b\uff0c\u95f9\u7b11\u8bdd\u4e86 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n","protected":false},"excerpt":{"rendered":"

    \u524d\u7aef\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u89c4\u5219\u662f\u4e0d\u662f\u53d8\u66f4\u8fc7\u4e86…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/88211"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=88211"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/88211\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=88211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=88211"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=88211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}