qiang

[Bug](https://element-plus.run/#eyJBcHAudnVlIjoiPHRlbXBsYXRlPlxuICA8ZWwtYnV0dG9uIEBjbGljaz1cImhhbmRsZVRvZ2dsZVwiPnRvZ2dsZTwvZWwtYnV0dG9uPlxuICA8ZWwtdGFibGUgOmRhdGE9XCJ0YWJsZURhdGFcIiBzdHlsZT1cIndpZHRoOiAxMDAlXCI+XG4gICAgPGVsLXRhYmxlLWNvbHVtbiA6Zml4ZWQ9XCJ1bmRlZmluZWRcIiB0eXBlPVwic2VsZWN0aW9uXCI+PC9lbC10YWJsZS1jb2x1bW4+XG4gICAgPGVsLXRhYmxlLWNvbHVtbiA6Zml4ZWQ9XCJmaXhlZFwiIHByb3A9XCJkYXRlXCIgbGFiZWw9XCJEYXRlXCIgd2lkdGg9XCIxNTBcIiAvPlxuICAgIDxlbC10YWJsZS1jb2x1bW4gcHJvcD1cIm5hbWVcIiBsYWJlbD1cIk5hbWVcIiB3aWR0aD1cIjEyMFwiIC8+XG4gICAgPGVsLXRhYmxlLWNvbHVtbiBwcm9wPVwic3RhdGVcIiBsYWJlbD1cIlN0YXRlXCIgd2lkdGg9XCIxMjBcIiAvPlxuICAgIDxlbC10YWJsZS1jb2x1bW4gcHJvcD1cImNpdHlcIiBsYWJlbD1cIkNpdHlcIiB3aWR0aD1cIjEyMFwiIC8+XG4gICAgPGVsLXRhYmxlLWNvbHVtbiBwcm9wPVwiYWRkcmVzc1wiIGxhYmVsPVwiQWRkcmVzc1wiIHdpZHRoPVwiNjAwXCIgLz5cbiAgICA8ZWwtdGFibGUtY29sdW1uIHByb3A9XCJ6aXBcIiBsYWJlbD1cIlppcFwiIHdpZHRoPVwiMTIwXCIgLz5cbiAgICA8ZWwtdGFibGUtY29sdW1uIGZpeGVkPVwicmlnaHRcIiBsYWJlbD1cIk9wZXJhdGlvbnNcIiBtaW4td2lkdGg9XCIxMjBcIj5cbiAgICAgIDx0ZW1wbGF0ZSAjZGVmYXVsdD5cbiAgICAgICAgPGVsLWJ1dHRvbiBsaW5rIHR5cGU9XCJwcmltYXJ5XCIgc2l6ZT1cInNtYWxsXCIgQGNsaWNrPVwiaGFuZGxlQ2xpY2tcIj5cbiAgICAgICAgICBEZXRhaWxcbiAgICAgICAgPC9lbC1idXR0b24+XG4gICAgICAgIDxlbC1idXR0b24gbGluayB0eXBlPVwicHJpbWFyeVwiIHNpemU9XCJzbWFsbFwiPkVkaXQyPC9lbC1idXR0b24+XG4gICAgICA8L3RlbXBsYXRlPlxuICAgIDwvZWwtdGFibGUtY29sdW1uPlxuICA8L2VsLXRhYmxlPlxuPC90ZW1wbGF0ZT5cblxuPHNjcmlwdCBsYW5nPVwidHNcIiBzZXR1cD5cbmltcG9ydCB7IHJlZiB9IGZyb20gJ3Z1ZSdcblxuY29uc3QgaGFuZGxlQ2xpY2sgPSAoKSA9PiB7XG4gIGNvbnNvbGUubG9nKCdjbGljaycpXG59XG5jb25zdCBmaXhlZCA9IHJlZihmYWxzZSlcbmNvbnN0IGhhbmRsZVRvZ2dsZSA9ICgpID0+IHtcbiAgZml4ZWQudmFsdWUgPSAhZml4ZWQudmFsdWVcbn1cblxuY29uc3QgdGFibGVEYXRhID0gcmVmKFtcbiAge1xuICAgIGZpeGVkOiAnbGVmdCcsXG4gICAgZGF0ZTogJzIwMTYtMDUtMDMnLFxuICAgIG5hbWU6ICdUb20nLFxuICAgIHN0YXRlOiAnQ2FsaWZvcm5pYScsXG4gICAgY2l0eTogJ0xvcyBBbmdlbGVzJyxcbiAgICBhZGRyZXNzOiAnTm8uIDE4OSwgR3JvdmUgU3QsIExvcyBBbmdlbGVzJyxcbiAgICB6aXA6ICdDQSA5MDAzNicsXG4gICAgdGFnOiAnSG9tZScsXG4gIH0sXG4gIHtcbiAgICBmaXhlZDogJ2xlZnQnLFxuICAgIGRhdGU6ICcyMDE2LTA1LTAyJyxcbiAgICBuYW1lOiAnVG9tJyxcbiAgICBzdGF0ZTogJ0NhbGlmb3JuaWEnLFxuICAgIGNpdHk6ICdMb3MgQW5nZWxlcycsXG4gICAgYWRkcmVzczogJ05vLiAxODksIEdyb3ZlIFN0LCBMb3MgQW5nZWxlcycsXG4gICAgemlwOiAnQ0EgOTAwMzYnLFxuICAgIHRhZzogJ09mZmljZScsXG4gIH0sXG4gIHtcbiAgICBmaXhlZDogJ2xlZnQnLFxuICAgIGRhdGU6ICcyMDE2LTA1LTA0JyxcbiAgICBuYW1lOiAnVG9tJyxcbiAgICBzdGF0ZTogJ0NhbGlmb3JuaWEnLFxuICAgIGNpdHk6ICdMb3MgQW5nZWxlcycsXG4gICAgYWRkcmVzczogJ05vLiAxODksIEdyb3ZlIFN0LCBMb3MgQW5nZWxlcycsXG4gICAgemlwOiAnQ0EgOTAwMzYnLFxuICAgIHRhZzogJ0hvbWUnLFxuICB9LFxuICB7XG4gICAgZml4ZWQ6ICdsZWZ0JyxcbiAgICBkYXRlOiAnMjAxNi0wNS0wMScsXG4gICAgbmFtZTogJ1RvbScsXG4gICAgc3RhdGU6ICdDYWxpZm9ybmlhJyxcbiAgICBjaXR5OiAnTG9zIEFuZ2VsZXMnLFxuICAgIGFkZHJlc3M6ICdOby4gMTg5LCBHcm92ZSBTdCwgTG9zIEFuZ2VsZXMnLFxuICAgIHppcDogJ0NBIDkwMDM2JyxcbiAgICB0YWc6ICdPZmZpY2UnLFxuICB9LFxuXSlcbjwvc2NyaXB0PlxuIiwiZWxlbWVudC1wbHVzLmpzIjoiaW1wb3J0IHsgZ2V0Q3VycmVudEluc3RhbmNlIH0gZnJvbSAndnVlJ1xuaW1wb3J0IEVsZW1lbnRQbHVzIGZyb20gJ2VsZW1lbnQtcGx1cydcblxubGV0IGluc3RhbGxlZCA9IGZhbHNlXG5hd2FpdCBsb2FkU3R5bGUoKVxuXG5leHBvcnQgZnVuY3Rpb24gc2V0dXBFbGVtZW50UGx1cygpIHtcbiAgaWYgKGluc3RhbGxlZCkgcmV0dXJuXG4gIGNvbnN0IGluc3RhbmNlID0gZ2V0Q3VycmVudEluc3RhbmNlKClcbiAgaW5zdGFuY2UuYXBwQ29udGV4dC5hcHAudXNlKEVsZW1lbnRQbHVzKVxuICBpbnN0YWxsZWQgPSB0cnVlXG59XG5cbmV4cG9ydCBmdW5jdGlvbiBsb2FkU3R5bGUoKSB7XG4gIGNvbnN0IHN0eWxlcyA9IFsnaHR0cHM6Ly9wcmV2aWV3LTE3OTA0LWVsZW1lbnQtcGx1cy5zdXJnZS5zaC9idW5kbGUvaW5kZXguY3NzJywgJ2h0dHBzOi8vcHJldmlldy0xNzkwNC1lbGVtZW50LXBsdXMuc3VyZ2Uuc2gvYnVuZGxlL2luZGV4LmNzcyddLm1hcCgoc3R5bGUpID0+IHtcbiAgICByZXR1cm4gbmV3IFByb21pc2UoKHJlc29sdmUsIHJlamVjdCkgPT4ge1xuICAgICAgY29uc3QgbGluayA9IGRvY3VtZW50LmNyZWF0ZUVsZW1lbnQoJ2xpbmsnKVxuICAgICAgbGluay5yZWwgPSAnc3R5bGVzaGVldCdcbiAgICAgIGxpbmsuaHJlZiA9IHN0eWxlXG4gICAgICBsaW5rLmFkZEV2ZW50TGlzdGVuZXIoJ2xvYWQnLCByZXNvbHZlKVxuICAgICAgbGluay5hZGRFdmVudExpc3RlbmVyKCdlcnJvcicsIHJlamVjdClcbiAgICAgIGRvY3VtZW50LmJvZHkuYXBwZW5kKGxpbmspXG4gICAgfSlcbiAgfSlcbiAgcmV0dXJuIFByb21pc2UuYWxsU2V0dGxlZChzdHlsZXMpXG59XG4iLCJ0c2NvbmZpZy5qc29uIjoie1xuICBcImNvbXBpbGVyT3B0aW9uc1wiOiB7XG4gICAgXCJ0YXJnZXRcIjogXCJFU05leHRcIixcbiAgICBcImpzeFwiOiBcInByZXNlcnZlXCIsXG4gICAgXCJtb2R1bGVcIjogXCJFU05leHRcIixcbiAgICBcIm1vZHVsZVJlc29sdXRpb25cIjogXCJCdW5kbGVyXCIsXG4gICAgXCJ0eXBlc1wiOiBbXCJlbGVtZW50LXBsdXMvZ2xvYmFsLmQudHNcIl0sXG4gICAgXCJhbGxvd0ltcG9ydGluZ1RzRXh0ZW5zaW9uc1wiOiB0cnVlLFxuICAgIFwiYWxsb3dKc1wiOiB0cnVlLFxuICAgIFwiY2hlY2tKc1wiOiB0cnVlXG4gIH0sXG4gIFwidnVlQ29tcGlsZXJPcHRpb25zXCI6IHtcbiAgICBcInRhcmdldFwiOiAzLjNcbiAgfVxufVxuIiwiUGxheWdyb3VuZE1haW4udnVlIjoiPHNjcmlwdCBzZXR1cD5cbmltcG9ydCBBcHAgZnJvbSAnLi9BcHAudnVlJ1xuaW1wb3J0IHsgc2V0dXBFbGVtZW50UGx1cyB9IGZyb20gJy4vZWxlbWVudC1wbHVzLmpzJ1xuc2V0dXBFbGVtZW50UGx1cygpXG48L3NjcmlwdD5cblxuPHRlbXBsYXRlPlxuICA8QXBwIC8+XG48L3RlbXBsYXRlPlxuIiwiaW1wb3J0LW1hcC5qc29uIjoie1xuICBcImltcG9ydHNcIjoge1xuICAgIFwidnVlXCI6IFwiaHR0cHM6Ly9mYXN0bHkuanNkZWxpdnIubmV0L25wbS9AdnVlL3J1bnRpbWUtZG9tQGxhdGVzdC9kaXN0L3J1bnRpbWUtZG9tLmVzbS1icm93c2VyLmpzXCIsXG4gICAgXCJAdnVlL3NoYXJlZFwiOiBcImh0dHBzOi8vZmFzdGx5LmpzZGVsaXZyLm5ldC9ucG0vQHZ1ZS9zaGFyZWRAbGF0ZXN0L2Rpc3Qvc2hhcmVkLmVzbS1idW5kbGVyLmpzXCIsXG4gICAgXCJlbGVtZW50LXBsdXNcIjogXCJodHRwczovL3ByZXZpZXctMTc5MDQtZWxlbWVudC1wbHVzLnN1cmdlLnNoL2J1bmRsZS9pbmRleC5mdWxsLm1pbi5tanNcIixcbiAgICBcImVsZW1lbnQtcGx1cy9cIjogXCJ1bnN1cHBvcnRlZFwiLFxuICAgIFwiQGVsZW1lbnQtcGx1cy9pY29ucy12dWVcIjogXCJodHRwczovL2Zhc3RseS5qc2RlbGl2ci5uZXQvbnBtL0BlbGVtZW50LXBsdXMvaWNvbnMtdnVlQDIvZGlzdC9pbmRleC5taW4uanNcIlxuICB9LFxuICBcInNjb3Blc1wiOiB7fVxufSIsIl9vIjp7InNob3dIaWRkZW4iOnRydWUsInN0eWxlU291cmNlIjoiaHR0cHM6Ly9wcmV2aWV3LTE3OTA0LWVsZW1lbnQtcGx1cy5zdXJnZS5zaC9idW5kbGUvaW5kZXguY3NzIn19)

因为我们需要处理焦点的流转，这样可以避免像 #9837 这样的异常行为

Thanks you for your contribution. This issue has been fixed.

@JackieCheung Do you have time to fix lint errors? In addition, you need to add relevant attributes to the [document](https://element-plus.org/en-US/component/tree.html#method)

We also need to add the newly added attributes to the corresponding documents

Thanks for your contribution. It looks like this PR contains a lot of other git commits, It is best to keep the commits information concise. It is also recommended that...

you can try to see if the [empty-values](https://element-plus.org/en-US/component/select.html#empty-values) meets your needs.

这样改动不就影响了 empty-values 的功能了吗？ 2.7.0 之前空字符串是可以匹配选项的，或许先创建一个讨论。

> I checked the element documentation for Vue2 and found that the style is also the same, so I'm not sure if this is correct We need to maintain consistency...