Let's talk about computed properties in Vue

1. Computed attribute computed

1.1. What is computed attribute computed

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computed is based on its dependency cache and will only be updated when its related dependencies change. The official documentation says this: For any complex logic that contains reactive data, you should use computed properties. (Learning video sharing:vue video tutorial)

1.2. Complex data processing-computed

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Splicing strings, Whether the score is passing or not, and the message records a piece of text, here it is implemented using computed

   
{{fullname}}
  
{{scorelevel}}
   
{{reversetext}}