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<template>
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<view class="u-demo">
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<view class="u-demo-wrap">
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<view class="u-demo-title">演示效果</view>
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<view class="u-demo-area">
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<view class="u-no-demo-here">
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此处为演示globalData全局变量的使用，需手动更新
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</view>
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<view class="u-demo-result-line">
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{{result}}
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</view>
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</view>
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</view>
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<view class="u-config-wrap">
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<view class="u-config-title u-border-bottom">
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参数配置
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</view>
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<view class="u-config-item">
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<view class="u-item-title">修改globalData为如下值</view>
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<u-subsection :list="['雅蓝', '皓白', '橘黄']" @change="globalDataChange"></u-subsection>
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</view>
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</view>
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</view>
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</template>
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<script>
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export default {
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data() {
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return {
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result: null
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}
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},
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onShow() {
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// 对globalData的使用，应在onShow生命周期，而不是onLoad生命周期
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this.result = getApp().globalData.username;
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},
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methods: {
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globalDataChange(index) {
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getApp().globalData.username = index == 0 ? '雅蓝' : index == 1 ? '皓白' : '橘黄';
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// 在此改变了globalData，想要再次触发本页内容更细，还必须手动操作
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this.result = getApp().globalData.username;
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}
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}
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}
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</script>
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<style lang="scss" scoped>
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.u-demo {}
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</style>
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