{"html":"<!DOCTYPE html>\n<html lang=\"en\">\n    <head>\n        <meta charset=\"UTF-8\">\n    </head>\n    <body>\n        \n        <script>\n            const _flatten = arr =>{\n                // 补全代码\n                return JSON.stringify(arr).match(/[0-9]/g).map(Number)\n                \n            }\n        </script>\n    </body>\n</html>","css":"","js":""}