assume that initialization has a variable with empty toolbarQueryParam, value {}
bind the v-model value toolbarQueryParam.name, of element"s select. This will cause the manual selection value of select to be invalid (later or null value)
to solve this problem, you can only assign a value to toolbarQueryParam.name when initializing, for example, toolbarQueryParam.name= "". However, I think this assignment code is a bit redundant, and the native select is normal according to the above usage
this problem exists in some form controls of element, such as datepick, and only text input is fine