antd4.x表單中使用getValueFromEvent禁止輸入空格
<Form.Item label="xxx" name="xxxxx"
getValueFromEvent={ event => event.target.value.trim()}
rules={[
{ pattern: new RegExp(/^[\u4E00-\u9FA5A-Za-z0-9]+$/, "g"), message: '請輸入xxx,支持中英文、數(shù)字' },
{ required: false, message: '請輸入xxx' }
]}>
<Input maxLength={50} placeholder="請輸入xxx" />
</Form.Item>