index.vue
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<template>
<uni-shadow-root class="vant-dist-tabbar-index"><view :class="(border ? 'van-hairline--top-bottom' : '')+' '+(utils.bem('tabbar', { fixed, safe: safeAreaInsetBottom }))+' custom-class'" :style="zIndex ? 'z-index: ' + zIndex : ''">
<slot></slot>
</view>
<view v-if="fixed && placeholder" :style="'height: '+(height)+'px;'"></view></uni-shadow-root>
</template>
<wxs src="../wxs/utils.wxs" module="utils"></wxs>
<script>
global['__wxRoute'] = 'vant/dist/tabbar/index'
import { getRect } from '../common/utils';
import { VantComponent } from '../common/component';
VantComponent({
relation: {
name: 'tabbar-item',
type: 'descendant',
current: 'tabbar',
linked(target) {
target.parent = this;
target.updateFromParent();
},
unlinked() {
this.updateChildren();
},
},
props: {
active: {
type: null,
observer: 'updateChildren',
},
activeColor: {
type: String,
observer: 'updateChildren',
},
inactiveColor: {
type: String,
observer: 'updateChildren',
},
fixed: {
type: Boolean,
value: true,
observer: 'setHeight',
},
placeholder: {
type: Boolean,
observer: 'setHeight',
},
border: {
type: Boolean,
value: true,
},
zIndex: {
type: Number,
value: 1,
},
safeAreaInsetBottom: {
type: Boolean,
value: true,
},
},
data: {
height: 50,
},
methods: {
updateChildren() {
const { children } = this;
if (!Array.isArray(children) || !children.length) {
return;
}
children.forEach((child) => child.updateFromParent());
},
setHeight() {
if (!this.data.fixed || !this.data.placeholder) {
return;
}
wx.nextTick(() => {
getRect(this, '.van-tabbar').then((res) => {
this.setData({ height: res.height });
});
});
},
},
});
export default global['__wxComponents']['vant/dist/tabbar/index']
</script>
<style platform="mp-weixin">
@import '../common/index.css';.van-tabbar{display:-webkit-flex;display:flex;box-sizing:initial;width:100%;height:50px;height:var(--tabbar-height,50px);background-color:#fff;background-color:var(--tabbar-background-color,#fff)}.van-tabbar--fixed{position:fixed;bottom:0;left:0}.van-tabbar--safe{padding-bottom:env(safe-area-inset-bottom)}
</style>