1<input type="checkbox"
2 :value="mainCat.merchantId"
3 id="mainCat.merchantId"
4 v-model="checkedCategories"
5 @change="check($event)">
6
1<input type="checkbox"
2 :value="mainCat.merchantId"
3 id="mainCat.merchantId"
4 v-model="checkedCategories"
5 @change="check($event)">