v-on:enter-cancelled

v-on:enter-cancelled 是 Vue.js 中的一个事件修饰符。它用于监听用户按下 "Enter" 键，但如果输入框中的值被取消（例如通过按下 Esc 键或失去焦点），则不会触发该事件。

例如，可以在一个输入框上使用 v-on:keyup.enter-cancelled 来监听用户按下 Enter 键并执行相应的操作，但如果用户取消输入（通过按下 Esc 键或失去焦点），则不会触发该事件。

示例代码：

<input v-on:keyup.enter-cancelled="submitForm" v-model="inputValue">

在上述代码中，当用户按下 Enter 键时，会调用组件中的 submitForm 方法。但如果用户取消输入，该方法不会被调用。

希望这个解释对你有帮助！如果还有其他问题，请随时提问。

相关问题

2023-06-08T02:25:37.583259Z 1 [Note] WSREP: GCache history reset: 00000000-0000-0000-0000-000000000000:0 -> c443b2d8-05a0-11ee-86b8-2e0fddf21737:0 2023-06-08T02:25:39.261528Z WSREP_SST: [INFO] Streaming with xbstream 2023-06-08T02:25:39.273174Z WSREP_SST: [INFO] WARNING: Stale temporary SST directory: /data/mysql//.sst from previous state transfer. Removing 2023-06-08T02:25:39.279749Z WSREP_SST: [INFO] Proceeding with SST......... 2023-06-08T02:25:39.519583Z 0 [Note] WSREP: (c05c7a4e, 'tcp://0.0.0.0:4567') turning message relay requesting off 2023-06-08T02:25:39.553817Z WSREP_SST: [INFO] ............Waiting for SST streaming to complete! 2023-06-08T02:25:49.257301Z WSREP_SST: [ERROR] ******************* FATAL ERROR ********************** 2023-06-08T02:25:49.260159Z WSREP_SST: [ERROR] xtrabackup_checkpoints missing. xtrabackup/SST failed on DONOR. Check DONOR log 2023-06-08T02:25:49.262811Z WSREP_SST: [ERROR] ****************************************************** 2023-06-08T02:25:49.266472Z WSREP_SST: [ERROR] Cleanup after exit with status:2 2023-06-08T02:25:49.289335Z 0 [Warning] WSREP: 1.0 (host78): State transfer to 0.0 (host79) failed: -22 (Invalid argument) 2023-06-08T02:25:49.289400Z 0 [ERROR] WSREP: gcs/src/gcs_group.cpp:gcs_group_handle_join_msg():811: Will never receive state. Need to abort. 2023-06-08T02:25:49.289465Z 0 [Note] WSREP: gcomm: terminating thread 2023-06-08T02:25:49.289494Z 0 [Note] WSREP: gcomm: joining thread 2023-06-08T02:25:49.289662Z 0 [Note] WSREP: gcomm: closing backend 2023-06-08T02:25:49.593055Z 0 [ERROR] WSREP: Process completed with error: wsrep_sst_xtrabackup-v2 --role 'joiner' --address '10.106.113.79' --datadir '/data/mysql/' --defaults-file '/etc/my.cnf' --defaults-group-suffix '' --parent '9996' --mysqld-version '5.7.41-44-57' '' : 2 (No such file or directory) 2023-06-08T02:25:49.593124Z 0 [ERROR] WSREP: Failed to read uuid:seqno from joiner script. 2023-06-08T02:25:49.593137Z 0 [ERROR] WSREP: SST script aborted with error 2 (No such file or directory) 2023-06-08T02:25:49.593186Z 0 [ERROR] WSREP: SST failed: 2 (No such file or directory) 2023-06-08T02:25:49.593234Z 0 [ERROR] Aborting 2023-06-08T02:25:49.593269Z 0 [Note] WSREP: Signalling cancellation of the SST request. 2023-06-08T02:25:49.593306Z 0 [Note] WSREP: SST request was cancelled 2023-06-08T02:25:49.593337Z 0 [Note] Giving 2 client threads a chance to die gracefully 2023-06-08T02:25:49.593357Z 1 [Note] WSREP: Closing send monitor... 2023-06-08T02:25:49.593370Z 1 [Note] WSREP: Closed send monitor. 2023-06-08T02:25:50.292465Z 0 [Note] WSREP: Current view of cluster as seen by this node

这段日志是一个 MySQL 集群中的一台机器（DONOR）在进行 SST（State Snapshot Transfer）时出现了错误。从日志中可以看到，xtrabackup_checkpoints 文件缺失导致 SST 失败，需要检查 DONOR 日志文件，以找到原因。因为 SST 失败，其他节点（joiner）无法接收状态，集群需要终止。最后，WSREP 进程由于遇到错误而退出。

Error:Flash Download failed - Target DLL has been cancelled

当出现"Error: Flash Download failed - Target DLL has been cancelled"错误提示时，可能有几个原因导致。其中一种可能是由于SWD（Serial Wire Debug）引脚被占用或禁用而导致ST-LINK无法与目标板通信。可以尝试按住reset按钮，然后点击download按钮，并在松开reset按钮之前将新程序烧录进去，以便在SWD引脚被占用之前成功进行通信。另外，也可以检查是否正确安装了驱动程序，或者尝试交换时钟线和数据线的位置，以及重装驱动程序来解决问题。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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