初始化（包含登录模块）

pages/API/set-navigation-bar-title/set-navigation-bar-title.vue

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+<template>
+	<view class="page">
+		<page-head :title="title"></page-head>
+		<view class="uni-padding-wrap">
+			<view class="uni-helllo-text">
+				本页标题栏是uni-app的默认配置，开发者可在pages.json里配置文字内容及标题颜色，也可通过api接口将其改变。
+			</view>
+			<view class="uni-btn-v">
+				<button type="default" @click="setText">改变标题栏文字</button>
+				<button type="primary" @click="setBg">改变标题栏颜色</button>
+			</view>
+		</view>
+	</view>
+</template>
+
+<script>
+	export default {
+		data() {
+			return {
+				title: 'nav-default',
+				hasSetText:false,
+				hasSetBg:false
+			}
+		},
+		methods: {
+			setText() {
+				this.hasSetText = !this.hasSetText;
+				uni.setNavigationBarTitle({
+					title: this.hasSetText ? "Hello uni-app" : "默认导航栏"
+				})
+			},
+			setBg() {
+				this.hasSetBg = !this.hasSetBg;
+				uni.setNavigationBarColor({
+					frontColor: this.hasSetBg ?  "#000000" : "#ffffff",
+					backgroundColor: this.hasSetBg ? "#F8F8F8" : "#007AFF"
+				})
+			}
+		}
+	}
+</script>
+
+<style>
+</style>