微信小程序自定义头部导航栏（组件化）

本文实例为大家分享了微信小程序自定义头部导航栏的具体代码，供大家参考，具体内容如下

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效果图

微信小程序自定义头部导航栏（组件化）

支持导航栏自定义背景颜色、背景图片支持返回文字自定义支持导航标题自定义

首先在app.json window配置项添加

"window": {
 "navigationStyle": "custom"
 }

自定义头部导航栏代码

wxml部分

wxss部分

.cu-custom { display: block; position: relative; }
.cu-custom .cu-bar {display: flex; align-items: center; justify-content: space-between;position: fixed; width: 100%; top: 0; min-height: 100rpx; padding-right: 220rpx; box-shadow: 0rpx 0rpx 0rpx; z-index: 9999; background-color: #fff; }
.cu-custom .cu-bar .border-custom { position: relative; background: rgba(255,255,255,0.5); border-radius: 1000rpx; height: 30px; }
.cu-custom .cu-bar .action { display: flex; align-items: center; height: 100%; justify-content: center; max-width: 100%; }
.cu-custom .cu-bar .action:first-child { margin-left: 30rpx; font-size: 30rpx; }
.cu-custom .cu-bar .border-custom text { display: block; flex: 1; margin: auto !important; text-align: center; font-size: 34rpx; }
.cu-bar .content { width: calc(100% - 440rpx);position: absolute; text-align: center; left: 0; right: 0; bottom: 0; top: 0; margin: auto; height: 60rpx; font-size: 32rpx; line-height: 60rpx; cursor: none; pointer-events: none; text-overflow: ellipsis; white-space: nowrap; overflow: hidden; }

js部分

const App = getApp();
Component({
 options: {
 addGlobalClass: true,
 multipleSlots: true
 },
 properties: {
 isBack: {
 type: [Boolean, String],
 default: false
 },
 bgColor: { // 类名
  type: String,
  default: ''
  }, 
  bgImage: { // 仅支持网络地址
  type: String,
  default: ''
  },
 },
 data: {
 StatusBar: App.GlobalData.StatusBar,
 CustomBar: App.GlobalData.CustomBar,
 Custom: App.GlobalData.Custom,
 isShare: App.GlobalData.share
 },
 methods: {
 BackPage() {
 wx.navigateBack({
 delta: 1
 });
 },
 toHome() {
 wx.reLaunch({
 url: '/pages/index/index',
 })
 }
 }
})

app.js 判断是否分享

App({
 GlobalData: {
 share: false,
 StatusBar: 0,
 Custom: 0,
 CustomBar: 0
 },
 onLaunch: function () {
 let self = this
 let systemInfo = wx.getSystemInfoSync()
 self.GlobalData.StatusBar = systemInfo.statusBarHeight;
 if (wx.getMenuButtonBoundingClientRect) {
 let custom = wx.getMenuButtonBoundingClientRect();
 self.GlobalData.Custom = custom;
 self.GlobalData.CustomBar = custom.bottom + custom.top - systemInfo.statusBarHeight;
 }
 })

因为组件css里不支持伪类元素所以写在 app.css

/* 自定义头部导航栏图标 */
.cu-custom [class*="icon-"] { font-family: "iconfont" !important; font-size: inherit; font-style: normal; }

@font-face {font-family: "iconfont";
 src: url('iconfont.eot?t=1555316650045'); /* IE9 */
 src: url('iconfont.eot?t=1555316650045#iefix') format('embedded-opentype'), /* IE6-IE8 */
 url('data:application/x-font-woff2;charset=utf-8;base64,d09GMgABAAAAAANcAAsAAAAAB0wAAAMPAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHEIGVgCDBgqCLIIKATYCJAMMCwgABCAFhG0HPxtZBsiemjyKBSigJhHwFACGePCEutd3On3HX0oBgBzCrQwwpxvBCDR2tgVzWmSLL1RJEo0V68AF6Bsg4wdCz0+7oQxuhxBSCRhLPW1+Ay6n/1+JzwPKbaxNY9OcFGCCAY21KZAHLpAEvWHsApdwHAI4amtJBg5+es1UsFjjBJDsDFXIVHImbEu6ECIENUtthuwgQWg2mhJge/h9+UP7QjAkFGvq2LvImf37vq6IVzDTJxDP5wDYKlCgJbAgs2tdU+XjaEuK0xQFPR8CLIKZKxDHhCJdEdh/eGAQkAArNRWApihm4DtXlKqHkrtOVQCCOGmmDDksXcWxtJFWjZOLo+97m+5UXPh65OpD782Kq9UuPmzkdeV+7zfvxfjzj1scPi7qNz+ucfhU3wPOmRUvOjpd+cy5TU+qGnfuXXVF21Tfd7hK2s/5zWcrLfo6uLj0lMky3G7tAf3+Nh96cqTdkZKAvt/mtErvN3SVSr9JXhz7eKT/52f5r37kwxXngld/KlVqW7XKmv39DxVVnratPbW3o0HNScOZw0H1BrtuNR/Q7DBquG5Ukw5bDkb76+2PNh8q15yu+yL1wrlpU887+4VpH7/nSzFXBoi/7WDNJAO6xrz4+7/BNMr8n9Pu+T/0FoAPzb0UyvrHQgww8b+umB4AdjCXWhG1QIvG9vWjTBg5yQAOB8TQV9638ZpKeioIIZVSGFKoBSWkIWlZLZHA0xEBIX3gaGHIak8FhfKITQLNrQUQyroOQ2meQynrNWlZX5Ggsn8IKJvCMbkKW3oal+EGFEIIINP8lDIkdhTHGtSi9GeooSV4WWnIfofn6wFq17ptMXELB94cM4oidVEcKBR5bNNgcBosiynfYwNSMEkPguuyTZuo7k2TBWxnagzgAUEAZGS+FMkgYQ7Fbx+olT7/DFQhi8BrqasJvgOPT++ctNNa2x7krcrpVXcvrxSJqBaKBRQk4mE2Mhg4wLKjjOTXDzKAJDCRPiJ8tdQGtYr6qibra+wPKGRNWHeqGFGx+KJ0DlPY7MEpR/McLdTnAAA=') format('woff2'),
 url('iconfont.woff?t=1555316650045') format('woff'),
 url('iconfont.ttf?t=1555316650045') format('truetype'), /* chrome, firefox, opera, Safari, Android, iOS 4.2+ */
 url('iconfont.svg?t=1555316650045#iconfont') format('svg'); /* iOS 4.1- */
}

.iconfont { font-family: "iconfont" !important;font-size: 16px;font-style: normal;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: grayscale; }
.icon-homefill:before { content: "\e6fc"; }
.icon-back:before { content: "\e67a"; }
.cu-custom .cu-bar .border-custom::after { content: " "; width: 200%; height: 200%; position: absolute; top: 0; left: 0; border-radius: inherit; transform: scale(0.5); transform-origin: 0 0; pointer-events: none; box-sizing: border-box; border: 1rpx solid rgba(0,0,0,0.3); opacity: 0.5; }
.cu-custom .cu-bar .border-custom::before { content: " "; width: 1rpx; height: 110%; position: absolute; top: 22.5%; left: 0; right: 0; margin: auto; transform: scale(0.5); transform-origin: 0 0; pointer-events: none; box-sizing: border-box; opacity: 0.6; background-color: rgba(0,0,0,0.3); }

开发工具显示不正常主要以真机显示为主具体可根据自己的需求修改

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创新互联。

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