Vue的 $parent,并不能准确找到上一层的控件,所以如果需要,需要填坑这个 bug,递归寻找下上级
// Find components upward function findComponentUpward (context, componentName, componentNames) { if (typeof componentName === 'string') { componentNames = [componentName] } else { componentNames = componentName } let parent = context.$parent let name = parent.$options.name while (parent && (!name || componentNames.indexOf(name) < 0)) { parent = parent.$parent if (parent) name = parent.$options.name } return parent }