How do I monitor mouse click events for select in elementUI?

for example, how to monitor the mouse click event of select in elementUI. A change event is triggered when the selected value changes, but I want to listen to it before the change occurs after the click. Thank you ~

Jul.13,2021

visible-change drop-down box is triggered when it appears / hidden; if it is true, hidden, it is false

When

is false, it is after clicking

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