支付宝小程序条件渲染a:if及checkbox用法

	<view class="checkbox-text">
		<checkbox-group onChange="onChange" name="libs">
          <label class="checkbox" >
            <checkbox value="{{checkbox}}" checked="{{checked}}"/>
            <text>请输入不可打折部分text>
          label>
        checkbox-group>
	view>
 
	<view a:if="{{checked}}" >
		<input id="checkedInput" class="input" type="number" value="{{undiscountFee}}" placeholder="请输入不可打折部分金额" onInput="bindInputundisCountFee" />
	view>

	data: {
		checked: false,
	},
	onChange(e) {
		// console.log(e);
		if (this.data.checked === true) {
			this.setData({
				checked: false
			})
		} else {
			this.setData({
				checked: true
			})
		}

	},