Vue console reports an error duplicate keys detected: ‘XXXX’. This may cause an update error. Solution

Q: the Vue console reports an error duplicate keys detected: ‘XXXX’. This may cause an update error. Solution

Analysis: duplicate key: ‘0’. 0 ‘may cause an update error; This problem usually occurs because there are multiple V-for loops on the same page, and the key of the loop is index. You can define the key as a unique value, such as code or ID. this can be solved
A: the value of the drop-down box must be unique. Check the value of the drop-down box


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