Bootstrap4下拉框功能强化插件
A selection of lightweight Bootstrap 4 UI components
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Single:
Option One
Option Two
Option Three
Option Four
Option Five
Option Six
Option Seven
Option Eight
Single (required):
Option One
Option Two
Option Three
Option Four
Option Five
Option Six
Option Seven
Option Eight
Multiple:
Option One
Option Two
Option Three
Option Four
Option Five
Option Six
Option Seven
Option Eight
Optgroup:
Option One
Option Two
Option Three
Option Four
Option Five
Option Six
Option Seven
Option Eight
Clickable optgroup:
Option One
Option Two
Option Three
Option Four
Option Five
Option Six
Option Seven
Option Eight