关于javascript:vue中组件通信之findComponents

// 向上查找组件 context为以后组件上下文对象，componentName为组件名const findUpwardComponent = (context, componentName) => {    let parent = context.$parent    let name = parent.$options.name    while (parent && (!name || !name.includes(componentName))) {        parent = parent.$parent        if (parent) name = parent.$options.name    }    return parent}// 查找兄弟组件const findBrotherComponents = (ctx, componentName, exceptMe = true) => {    const $brothers = ctx.$parent.$children.filter(item => {        return item.$options.name && item.$options.name.includes(componentName)    })    const index = $brothers.findIndex(item => item._uid === ctx._uid)    if (exceptMe && index > -1) $brothers.splice(index, 1)    return $brothers}// 向下查找const findDownwardComponent = (context, componentName) => {    const $children = context.$children    let bean = null    if ($children.length) {        for (const child of $children) {            const name = child.$options.name            if (name && name.includes(componentName)) {                bean = child                break            } else {                bean = findDownwardComponent(child, componentName)                if (bean) break            }        }    }    return bean}