vue动态修改侧边菜单栏宽度

1.添加可修改宽度的dom元素

<div style="background: #f5f7fa;padding: 20px 10px;"><label>菜单宽度 </label><el-input v-model="sideWidth" placeholder="请输入宽度值" style="width: 100px"/> px<el-button  type="primary" size="small" style="margin: 10px 50px 0px 60px;" @click="sideWidthSave()">保存</el-button></div>

2.在data中定义宽度变量 sideWidth

sideWidth:0,

3.逻辑处理

 /********侧边栏宽度********/sideWidthSave(){localStorage.setItem('sideWidth',this.sideWidth)var sidebarContainer =  document.getElementById("sidebar-container"); // 使用合适的选择器var mainContainer =  document.getElementById("main-container");sidebarContainer.style.setProperty('--base-sidebar-width', this.sideWidth +'px');mainContainer.style.setProperty('--base-sidebar-width', this.sideWidth +'px');// console.log('****that.sideWidth***',this.sideWidth)// console.log('****`${this.sideWidth}px`***',`${this.sideWidth}`)/* location.reload();*/},

4.页面加载时，调用存储的宽度值

    created() {   /****左侧菜单宽度****/let NewSideWidth=localStorage.getItem('sideWidth')if(NewSideWidth){this.sideWidth = NewSideWidththis.$nextTick(function () {var sidebarContainer =  document.getElementById("sidebar-container"); // 使用合适的选择器var mainContainer =  document.getElementById("main-container");sidebarContainer.style.setProperty('--base-sidebar-width', this.sideWidth +'px');mainContainer.style.setProperty('--base-sidebar-width', this.sideWidth +'px');})}},

注：–base-sidebar-width 是scss中侧边菜单宽度变量