Error in v-on handler: "Error: Digest already called"

这个错误通常出现在使用 Vue.js 时，可能是因为在数据更新后重复调用了 `nextTick()` 函数，或者在数据更新后手动调用了 `$digest()` 函数。这些操作会导致 Vue.js 内部的数据更新机制出现问题，进而抛出此错误。

要解决这个问题，可以检查代码中是否有重复调用 `nextTick()` 或手动调用 `$digest()` 的情况。如果有，可以删除多余的调用，确保每个更新只被触发一次。同时，还可以尝试使用 Vue.js 的开发者工具来检查组件之间的数据流动情况，找出可能导致重复更新的原因。

相关问题

Error in v-on handler: "TypeError: Object(...) is not a function

"This error typically occurs when there is a problem with the syntax or structure of the code in the v-on handler. It can also occur if the function being called in the v-on handler is not defined or is not a function.

To troubleshoot this error, check the syntax of the v-on handler and ensure that the function being called is defined and is a function. Additionally, check for any typos or errors in the code that may be causing the problem.

If the problem persists, try simplifying the code and testing it step-by-step to isolate the issue. You may also want to consult the documentation or seek help from other developers to identify the root cause of the error.