微信小程序底部弹出跨部分实现代码
时间: 2023-06-10 17:04:57 浏览: 111
微信小程序实现底部弹出模态框
您好,以下是微信小程序底部弹出跨部分实现代码的示例:
1. 在 app.json 中添加设置:
```json
{
"tabBar": {
"custom": true,
"color": "#999999",
"selectedColor": "#000000",
"backgroundColor": "#ffffff",
"borderStyle": "white",
"list": [{
"pagePath": "pages/home/home",
"text": "首页",
"iconPath": "images/home.png",
"selectedIconPath": "images/home-fill.png"
},
{
"pagePath": "pages/mine/mine",
"text": "我的",
"iconPath": "images/mine.png",
"selectedIconPath": "images/mine-fill.png"
}
]
}
}
```
2. 在 app.js 中添加代码:
```js
App({
// ...
globalData: {
// ...
isIphoneX: false // 是否为 iPhone X 系列手机
},
// ...
onLaunch: function() {
// ...
// 判断是否为 iPhone X 系列手机,并保存到全局变量中
wx.getSystemInfo({
success: res => {
let model = res.model;
if (/iphone\sx/i.test(model) || /iphone/i.test(model) && res.screenHeight === 812) {
this.globalData.isIphoneX = true;
}
}
})
}
// ...
})
```
3. 在组件中添加代码:
```html
<view class="tab-bar">
<view class="tab-bar-item" wx:for="{{items}}" wx:key="{{index}}" bindtap="clickItem" data-index="{{index}}">
<image class="icon" src="{{item.iconPath}}" wx:if="{{!item.active}}" />
<image class="icon icon-active" src="{{item.selectedIconPath}}" wx:if="{{item.active}}" />
<view class="text">{{item.text}}</view>
</view>
<view class="extra" wx:if="{{showExtra}}" style="{{extraStyle}}" bindtap="clickExtra">
<image class="extra-icon" src="{{extraIcon}}" />
<view class="extra-text">{{extraText}}</view>
<image class="extra-arrow" src="{{extraArrow}}" />
</view>
</view>
```
```js
Component({
properties: {
// tabBar 配置项
items: {
type: Array,
value: []
},
// 是否显示额外按钮(例如发布按钮)
showExtra: {
type: Boolean,
value: false
},
// 额外按钮的图标
extraIcon: {
type: String,
value: ''
},
// 额外按钮的文本
extraText: {
type: String,
value: ''
},
// 额外按钮的箭头图标
extraArrow: {
type: String,
value: ''
},
// 额外按钮的位置
extraPosition: {
type: String,
value: 'bottom' // 'bottom-left', 'bottom-right'
}
},
methods: {
clickItem(e) {
const index = e.currentTarget.dataset.index;
this.triggerEvent('click-item', {index});
},
clickExtra(e) {
this.triggerEvent('click-extra');
}
},
/**
* 组件生命周期函数,在组件实例进入页面节点树时执行
*/
attached() {
// 计算额外按钮的样式
const extraWidth = 100;
const extraTop = getApp().globalData.isIphoneX ? '-34rpx' : '0';
let extraStyle = '';
switch (this.data.extraPosition) {
case 'bottom-left':
extraStyle = `left:${extraWidth / 2}px;bottom:0;top:${extraTop};transform:translateX(-50%)`;
break;
case 'bottom-right':
extraStyle = `right:${extraWidth / 2}px;bottom:0;top:${extraTop};transform:translateX(50%)`;
break;
default:
extraStyle = `left:50%;bottom:0;top:${extraTop};transform:translateX(-50%)`;
break;
}
this.setData({extraStyle});
}
});
```
希望以上代码可以帮助到您,如果还有其他问题请随时提出哦!
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