<view class="type-group">
 <block wx:for="{{iconType}}">
  <icon type="{{item}}" size="40"/>
 </block>
</view>

//获取应用实例
var app = getApp()
Page({
 data:{
 iconType:[
  'success','success_circle','success_on_circle','waiting','waiting_circle','safe_success','safe_warn','warn','info',
  'info_circle','circle','download','cancel','search','clear'
 ]
 },
})

<view class="main">
 <view class="text-view">
  <text class="show-text">{{text}}</text>
 </view>
 <view class="bt-view">
  <button bindtap="addLine" class="show-text">{{add}}</button>
  <button bindtap="removeLine" class="show-text">{{remove}}</button>
 </view> 
</view>

//获取应用实例
var app = getApp()
//定义额外的文本内容数组
var extraLine = [];
//初始化文本
var init='Initdata! \n'
Page({
 data:{
 text:init,
 add:'添加',
 remove:'删除'
 },
/*
*添加一行内容
 */
addLine:function(e){
 extraLine.push("This line is new add!")
 this.setData({
  text:init+extraLine.join('\n')
 })
},
/*
*删除一行内容
 */
removeLine:function(e){
 if (extraLine.length > 0) {
  extraLine.pop()
  this.setData({
  text:init + '\n' + extraLine.join('\n')
  })
 }
},
})

.show-text{
 font-size: 10pt;
 margin-left: 20rpx;
 font-family: 'Times New Roman', Times, serif;
 font-weight: bold;
}
.text-view{
 padding: 10rpx;
}
button{
 margin: 10rpx;
}

<view class="progress-view">
 <progress percent="50"/>
 <progress percent="20" stroke-width="10" show-info/>
 <progress percent="40" color="#000"/>
 <progress percent="100" active/>
</view>

progress{
 margin: 50rpx;
}

<view class="nav-view">
 <navigator open-type="navigate" url="../navigator/navigator" class="nav-item" hover-class="nav-hover">导航到新页面</navigator>
 <navigator open-type="redirect" url="../navigator/navigator" class="nav-item" hover-class="nav-hover">当前页面</navigator>
 <navigator open-type="switchTab" url="../index/index" class="nav-item" hover-class="nav-hover">切换Tab</navigator>
</view>

.nav-hover{
 color: white;
 background-color: black;
}
.nav-item{
 margin: 20rpx;
 font-family: 'Times New Roman', Times, serif;
 font-weight: bold;
 padding: 10rpx;
 display: inline-flex;
}

<view class="info">导航到的新页面</view>