uni-app reportJSException >>>> exception function:createInstanceContext, exception

uni-app reportJSException >>>> exception function:createInstanceContext, exception

操作步骤：

使用hbuilderx新建uni-app项目选择默认模板，pages/index目录下新建subnvue/tabbar.nvue，并配置pages.json中subNVues，运行至android app基座，android使用的是安卓虚拟软件bluestacks，手机型号为Samsung Galaxy S20 Ultra，运行过程中报错。去除pages.json中页面配置项的subNVues可以正常运行

预期结果：

不报错

实际结果：

reportJSException >>> exception function:createInstanceContext, exception:white screen cause create instanceContext failed,check js stack ->Uncaught SyntaxError: Invalid left-hand side in assignment。

bug描述：

reportJSException >>> exception function:createInstanceContext, exception:white screen cause create instanceContext failed,check js stack ->Uncaught SyntaxError: Invalid left-hand side in assignment。 使用hbuilderx新建uni-app项目选择默认模板，测试subNVues，运行至android app基座，android使用的是安卓虚拟软件bluestacks，手机型号为Samsung Galaxy S20 Ultra，运行过程中报错。去除pages.json中页面配置项的subNVues可以正常运行

Image Image Image Image


更多关于uni-app reportJSException >>>> exception function:createInstanceContext, exception的实战教程也可以访问 https://www.itying.com/category-93-b0.html

1 回复

更多关于uni-app reportJSException >>>> exception function:createInstanceContext, exception的实战教程也可以访问 https://www.itying.com/category-93-b0.html


The error message you provided, uni-app reportJSException >>>> exception function:createInstanceContext, exception, indicates that an exception occurred in the createInstanceContext function within a uni-app project. This error is likely related to the JavaScript runtime environment in uni-app, which is used to build cross-platform applications (e.g., H5, iOS, Android, etc.).

Here are some steps to troubleshoot and resolve the issue:

1. Check the Error Details

  • Look for additional error messages or stack traces in the console or logs. These details can help pinpoint the exact cause of the issue.
  • If you’re using a development tool (e.g., HBuilderX), check the debug console for more information.

2. Review the createInstanceContext Function

  • The createInstanceContext function is typically related to the creation of a component or page instance in uni-app.
  • Ensure that the component or page you’re trying to create is properly defined and imported.
  • Check for syntax errors, missing dependencies, or incorrect configurations.

3. Check for Circular Dependencies

  • Circular dependencies (e.g., two components importing each other) can cause issues during instance creation.
  • Review your imports and ensure there are no circular references.

4. Verify the Uni-App Version

  • Ensure you’re using a compatible version of uni-app. Sometimes, bugs in older versions can cause such issues.
  • Update uni-app to the latest version if possible.

5. Debug the Code

  • Add console.log statements in the createInstanceContext function or related code to trace the execution flow.
  • Use debugging tools to step through the code and identify where the exception occurs.

6. Check for Platform-Specific Issues

  • If the error occurs only on a specific platform (e.g., iOS, Android, H5), it may be related to platform-specific configurations or limitations.
  • Review the uni-app documentation for platform-specific considerations.

7. Recreate the Project

  • If the issue persists, try creating a new uni-app project and gradually migrate your code to isolate the problem.

8. Search for Similar Issues

  • Search online for similar issues in the uni-app community or GitHub repositories. Other developers may have encountered and resolved the same problem.

Example Code to Check

Here’s an example of how a component might be defined in uni-app. Ensure your code follows a similar structure:

<template>
  <view>
    <text>Hello World</text>
  </view>
</template>

<script>
export default {
  data() {
    return {
      message: 'Welcome to uni-app'
    };
  },
  methods: {
    // Your methods here
  }
};
</script>

<style>
/* Your styles here */
</style>
回到顶部