vue.js method of operating array data

This time I will bring you the method of operating array data in vue.js. What are theprecautions for operating array data in vue.js? Here are the actual cases, let’s take a look.

1. By default, Vue.js does not support adding repeated data to an array. This can be achieved usingtrack-by="$index".

2. Do not use track-by="$index" for array insertion. The array does not support the insertion of duplicate data

2.1

JavaScriptcode

2.2 html code

  
 
 {{value}} 
 
 增加数据 

3. Use track-by="$index" to insert into the array. The array supports the insertion of repeated data

3.1 Javascript Code 3.2 html code

4. Complete code

  
 
 {{value}} 
 
 增加数据 

ps: Let’s take a look at the vue array duplication,

LoopError reportingVue.js does not support adding repeated data to arrays by default. This can be achieved usingtrack-by="$index"

.

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

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