this.$nextTick(() => this.$set(el, 'checkVideo', true));
this.forms = response.data.galleries;
$(this.forms).each(function (index,value) {
if (value.video){
value.checkVideo = true;
}else{
value.checkVideo = false;
}
});
response.data.galleries.forEach(n => n.checkVideo = !!n.video);
this.forms = response.data.galleries;
начните лучше учить js