From ede222bf2bfbe161df710f3ce2d91671b0ae349e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9B=BE=E9=9D=92=E5=87=A4?= <2658978250@qq.com> Date: Tue, 21 Feb 2023 08:38:28 +0000 Subject: [PATCH 1/2] work3 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 曾青凤 <2658978250@qq.com> --- .../a.txt" | 1 + .../b.txt" | 1 + .../work3.js" | 24 +++++++++++++++++++ 3 files changed, 26 insertions(+) create mode 100644 "\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/a.txt" create mode 100644 "\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/b.txt" create mode 100644 "\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/work3.js" diff --git "a/\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/a.txt" "b/\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/a.txt" new file mode 100644 index 0000000..beafde7 --- /dev/null +++ "b/\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/a.txt" @@ -0,0 +1 @@ +nodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenodenode \ No newline at end of file diff --git "a/\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/b.txt" "b/\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/b.txt" new file mode 100644 index 0000000..23b38f2 --- /dev/null +++ "b/\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/b.txt" @@ -0,0 +1 @@ +222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222 \ No newline at end of file diff --git "a/\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/work3.js" "b/\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/work3.js" new file mode 100644 index 0000000..5014109 --- /dev/null +++ "b/\346\233\276\351\235\222\345\207\244/\345\220\214\345\274\202\346\255\245\350\200\227\346\227\266/work3.js" @@ -0,0 +1,24 @@ +let fs = require("fs"); + +let startTime = new Date().getTime(); +for (let i = 1; i < 100; i++){ + fs.writeFileSync("./a.txt","nodenode",{flag:"a"}); +} +let endTime = new Date().getTime(); +console.log("同步耗时："+(endTime-startTime)); + + + + +let bstarttime = new Date().getTime(); +let num=0; +for (let j = 0; j < 100; j++) { + fs.writeFile("./b.txt","222",{flag:"a"},function (err) { + num++; + if (num==100) { + let bendtime = new Date().getTime(); + console.log("异步耗时："+(bendtime - bstarttime)); + } + }) + +} -- Gitee From 72c379cb85791a6886fbb485aa33f3fd3f00e485 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9B=BE=E9=9D=92=E5=87=A4?= <2658978250@qq.com> Date: Thu, 23 Feb 2023 08:09:27 +0000 Subject: [PATCH 2/2] =?UTF-8?q?=E6=95=B0=E6=8D=AE=E5=BA=93=E4=BD=9C?= =?UTF-8?q?=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 曾青凤 <2658978250@qq.com> --- .../work5.js" | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 "\346\233\276\351\235\222\345\207\244/\346\225\260\346\215\256\345\272\223\344\275\234\344\270\232/work5.js" diff --git "a/\346\233\276\351\235\222\345\207\244/\346\225\260\346\215\256\345\272\223\344\275\234\344\270\232/work5.js" "b/\346\233\276\351\235\222\345\207\244/\346\225\260\346\215\256\345\272\223\344\275\234\344\270\232/work5.js" new file mode 100644 index 0000000..9f519dd --- /dev/null +++ "b/\346\233\276\351\235\222\345\207\244/\346\225\260\346\215\256\345\272\223\344\275\234\344\270\232/work5.js" @@ -0,0 +1,44 @@ +let mysql = require("mysql"); + +let connection = mysql.createConnection({host:"127.0.0.1",user:"root",password:"123456",database:"uu"}) + +connection.connect(); + +//查询 +connection.query("select * from user",(err,data)=>{ + // console.log(err); + console.log(data); +}) + +// //新增 +let insertSql = "INSERT INTO `user` VALUES (NULL,'李雷','男',34,'2022-12-4','2022-2-4');"; +connection.query(insertSql,(err,data)=>{ + console.log("写入新增数据----------------"); + // console.log(err); + // console.log(data); + //console.log(data.affectedRows); +}) + +//删除 +let deleteSql = "DELETE FROM user WHERE user_id=3;"; +connection.query(deleteSql,(err,data)=>{ + console.log("删除数据--------"); + //console.log(err); + //console.log(data); +}) + +//修改 +var newtime=new Date().toLocaleString().replace('/','-').replace('/','-'); +console.log(newtime); +let updateSql = "UPDATE user set update_time='"+newtime+"' where name='李雷'"; +connection.query(updateSql,(err,data)=>{ + console.log("修改数据------"); + //console.log(err); + //console.log(data); +}) +console.log(new Date().toLocaleString().replace('/','-').replace('/','-')) + + + + +connection.end(); \ No newline at end of file -- Gitee