WeChat applet form component multi-line input box textarea

WeChat applet textarea

Multi-line input box.

Sample code:

<!--textarea.wxml-->
<view class="section">
  <textarea bindblur="bindTextAreaBlur" auto-height placeholder="自动变高" />
</view>
<view class="section">
  <textarea placeholder="placeholder颜色是红色的" placeholder-style="color:red;"  />
</view>
<view class="section">
  <textarea placeholder="这是一个可以自动聚焦的textarea" auto-focus />
</view>
<view class="section">
  <textarea placeholder="这个只有在按钮点击的时候才聚焦" focus="{{focus}}" />
  <view class="btn-area">
    <button bindtap="bindButtonTap">使得输入框获取焦点</button>
  </view>
</view>

//textarea.js
Page({
  data: {
    height: 20,
    focus: false
  },
  bindButtonTap: function() {
    this.setData({
      focus: true
    })
  },
  bindTextAreaBlur: function(e) {
    console.log(e.detail.value)
  }
})

Bug & Tip

1. ##bug: WeChat version 6.3.30, textarea When rendering the list, the position calculation error of the newly added textarea during auto focus
2. tip : Do not use textarea component in scroll-view