小程序键盘事件input框

<view class="serch">
  <input type="text" name="search_input" bindconfirm="inputTyping" class="lf search_input search" focus="true" value="{{search_input_value}}" confirm-type="search" placeholder="人造雅士白" />
  <image class="lr iconImg iconfont icon-search" bindconfirm="inputTyping" src="../components/images/search.png"></image>
</view>
一进来页面键盘就弹起

<view class="serch">
  <input type="text" name="search_input" bindconfirm="inputTyping" class="lf search_input search"  value="{{search_input_value}}" confirm-type="search" placeholder="人造雅士白" />
  <image class="lr iconImg iconfont icon-search" bindconfirm="inputTyping" src="../components/images/search.png"></image>
</view>
取消键盘