Vue iview-admin框架二级菜单改为三级菜单的方法 最近在用 iview-admin的Vue后台模板,从git上下载后发现左侧导航栏最多支持到二级菜单,也发现很多童鞋在问如何实现三级菜单。在实际的应用场景中还是会出现三级菜单的需求的,木有其他好办法,只能自己手动改代码了。 1. 第一步:首先改写VUE中的模板,修改sidebarMenu.vue文件,文件具体目录建下图: 将Menu导航菜单组件的的二级嵌套结构改为三级嵌套,无非就是判断二级路由页面下是否有children属性及是否含有子元素,有的话直接v-for循环生成子元素标签,新结构如下: 组件中methods下添加一个方法isThirdLeveMenu,判断是否含有children属性: methods: { changeMenu(active) { this.$emit("on-change", active); }, itemTitle(item) { if (typeof item.title === "object") { return this.$t(item.title.i18n); } else { return item.title; } }, isThirdLeveMenu(child){ if(child.children){ if(child.children.length>0)return true; else return false; } else { return false; } } }, 第二步:修改创建当前path路径的逻辑方法:setCurrentPath ,在libs文件夹下util.js文件中: util.setCurrentPath = function (vm, name) { let title = ''; let isOtherRouter = false; vm.$store.state.app.routers.forEach(item => { if (item.children.length === 1) { if (item.children[0].name === name) { title = util.handleTitle(vm, item); if (item.name === 'otherRouter') { isOtherRouter = true; } } } else { item.children.forEach(child => { if (child.name === name) { title = util.handleTitle(vm, child); if (item.name === 'otherRouter') { isOtherRouter = true; } } }); } }); let currentPathArr = []; //去首页 if (name === 'home_index') { currentPathArr = [ { title: util.handleTitle(vm, util.getRouterObjByName(vm.$store.state.app.routers, 'home_index')), path: '', name: 'home_index' } ]; } //去导航菜单一级页面或者OtherRouter路由中的页面 else if ((name.indexOf('_index') >= 0 || isOtherRouter) && name !== 'home_index') { currentPathArr = [ { title: util.handleTitle(vm, util.getRouterObjByName(vm.$store.state.app.routers, 'home_index')), path: '/home', name: 'home_index' }, { title: title, path: '', name: name } ]; } //去导航菜单二级页面或三级页面 else { let currentPathObj = vm.$store.state.app.routers.filter(item => { var hasMenu; if (item.children.length <= 1) { hasMenu = item.children[0].name === name; return hasMenu; } else { let i = 0; let childArr = item.children; let len = childArr.length; while (i < len) { //如果是三级页面按钮,则在二级按钮数组中找不到这个按钮名称 //需要二级页面下可能出现三级子菜单的情况逻辑加入 if (childArr[i].name === name) { hasMenu = true; return hasMenu; } i++; } //如果一级,二级菜单下都没有此按钮名称,则遍历三级菜单 if(!hasMenu){ for(let m=0;m { return child.name === name; })[0]; // let thirdLevelObj = console.log(childObj) //二级页面 if (childObj) { currentPathArr = [ { title: '首页', path: '/home', name: 'home_index' }, { title: currentPathObj.title, path: '', name: currentPathObj.name }, { title: childObj.title, path: currentPathObj.path + '/' + childObj.path, name: name } ]; } //childobj为undefined,再从三级页面中遍历 else { let thirdObj; let childObj = currentPathObj.children.filter((child) => { let hasChildren; hasChildren = child.name === name; if (hasChildren) return hasChildren if (child.children) { let sonArr = child.children; for (let n = 0; n < sonArr.length; n++) { if (sonArr[n].name === name) { thirdObj = sonArr[n]; hasChildren = true; return hasChildren; } } } return hasChildren })[0]; if(thirdObj && childObj){ currentPathArr = [ { title: '首页', path: '/home', name: 'home_index' }, { title: currentPathObj.title, path: '', name: currentPathObj.name }, { title: childObj.title, path: '', //设为空是因为此二级菜单没有实际页面且用于面包屑组件显示,path为空的将不可单击 name: childObj.name }, { title: thirdObj.title, path: currentPathObj.path + '/' + childObj.path + '/' + thirdObj.path, name: thirdObj.name } ]; } } } } vm.$store.commit('setCurrentPath', currentPathArr); return currentPathArr; }; 第三步:建立三级页面test-child.vue,testcaca.vue和三级路由的容器组件artical-publish-center.vue artical-publish-center.vue结构如下图: 要有标签 其他两个三级页面vue随便写了: 第四步:到这里,容器可以实现期待已久三级菜单了,^_^. 在router里添加三级页面路由,router文件夹下router.js中: 加到appRouter中吧,可以放到title: '组件'的children数组中: { path: 'artical-publish', title: '用户配置', name: 'artical-publish', icon: 'compose', component: () => import('@/views/test/artical-publish-center.vue'), //引用三级页面的中间容器层 children:[ { path: 'testcaca', icon: 'ios-pause', name: 'testcaca', title: 'test4', component: () => import('@/views/test/testcaca.vue') }, { path: 'test-child', icon: 'ios-pause', name: 'test-child', title: 'test-child', component: () => import('@/views/test/test-child.vue') } ] } 最后保存,运行你的项目,看下三级菜单出来了吧: 以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持中文源码网。