add v-ref + v-for test case
add v-ref + v-for test case

Ddder-FE/vue,Hanks10100/vue,KingMario/vue,Kingwl/vue,gebilaoxiong/vue,gebilaoxiong/vue,leemotive/vue,Ddder-FE/vue,lizhiyao/vue,sreesirisha/GITMidtermexam,wushuyi/vue,pramudaprakash/GITHUB,Hanks10100/vue,lizhiyao/vue,posva/vue,cnchanning/vue,greennyreborn/vue,xueyaodeai/vue,hanhongyuan/vue,greennyreborn/vue,lizhiyao/vue,vuejs/vue,Ddder-FE/vue,wushuyi/vue,Ddder-FE/vue,leemotive/vue,xueyaodeai/vue,sreesirisha/GITMidtermexam,posva/vue,leemotive/vue,gebilaoxiong/vue,pramudaprakash/GITHUB,Hanks10100/vue,sreesirisha/GITMidtermexam,KingMario/vue,Jinjiang/vue,greennyreborn/vue,xueyaodeai/vue,cnchanning/vue,hanhongyuan/vue,Hanks10100/vue,Kingwl/vue,cnchanning/vue,greennyreborn/vue,Jinjiang/vue,posva/vue,vuejs/vue,pramudaprakash/GITHUB,vuejs/vue,Jinjiang/vue,hanhongyuan/vue,pramudaprakash/GITHUB,leemotive/vue,sreesirisha/GITMidtermexam,posva/vue,Kingwl/vue,Jinjiang/vue,Kingwl/vue,hanhongyuan/vue,xueyaodeai/vue,lizhiyao/vue,KingMario/vue,vuejs/vue,optimizely/vue,KingMario/vue