Introduction to the v for command in the vue component and analysis of alarm problems when using v-for

We know that the basic use of v-for is v-for="item in list" or v-for="item of list" for traversal. This article mainly introduces how to solve the alarm problem when using v-for in the vue component. In the article, I introduce the v for command to everyone. Friends who need it can refer to it. I hope it can help everyone.

When running the v-for code snippet in the project,

  {{role.value}}     {{role.value}}  出现告警：component lists rendered with v-for should have explicit keys. See https://vuejs.org/guide/list.html#key for more info.

Solution:

Bind the key value in the code, which can be solved, such as:

  {{role.value}}  

PS: Vue2 study notes :v-for command

1.Use

       
  
 
循环数组
 
 
 {{a}} 
 
 
 
循环出数组索引
 
 
 {{v}}==>{{k}} 　　　　　　　
 
 
循环json
 
 
{{item}}
 
 
循环json的键
 
 
 {{k}}==>{{v}} 
 
 
  

Result:

Summary

Regarding solving the alarm problem when using v-for in the vue component, I hope it will be helpful to everyone It's helpful. If you have any questions, please leave me a message and I will reply to you in time!

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Vue.js Common Instructions - Tutorial on Looping the v-for Instruction

vue.js Instruction v-for Usage and index acquisition

Vue.js common instructions summary (v-if, v-for, etc.)

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