<uni-forms-item label="郵箱" name="email">
	<input class="input" 
        v-model="formData.email" 
        type="text" 
        placeholder="請輸入用戶名"     
        @input="binddata('email',$event.detail.value)" />
</uni-forms-item>

onReady() {
	// 需要在onReady中設(shè)置規(guī)則
	this.$refs.form.setRules(this.rules)
},

<uni-forms ref="form" :modelValue="formData">
	<uni-forms-item label="興趣愛好" required name="hobby">
		<uni-data-checkbox v-model="formData.hobby" multiple :localdata="hobbys" />
	</uni-forms-item>
</uni-forms>
<button class="button" @click="submit">校驗表單</button>

rules: {
	hobby: {
		rules: [{
			required: true,
			errorMessage: '請選擇興趣',
		},{
			validateFunction:function(rule,value,data,callback){
				if (value.length < 2) {
					callback('請至少勾選兩個興趣愛好')
				}
				return true
			}
		}]
	}
}

submit(form) {
	this.$refs.form.validate().then(res=>{
		console.log('成功：', res);
	}).catch(err =>{
		console.log('失?。?, err);
	})
}