Vue common mistakes and points of attention

Error caused by initial value

Reason: The DOM has loaded the data and has not received a 404 error.

Solution: Use v-if to judge that the data is loaded before rendering the DOM

Expected Object,got Number with value 95

el-option requires value

TypeError:Cannot read property ‘key’ of undefined

EXpected Object,got String with value “rules”

• The string without the colon
  

Object（…）is not a function

• Import and export errors

Missing required prop:“value”

• el-select requires v-model
  

Failed to resolve directive:mode

• The instruction is wrong