秒转换成年月日时分秒 和复制文本到剪贴板

• 秒转换成年月日时分秒

getdatestr (seconds) {
      let date = new date(seconds)
      let year = date.getfullyear()
      let month = date.getmonth() + 1
      let day = date.getdate()
      let hour = date.gethours() < 10 ? '0' + date.gethours() : date.gethours()
      let minute = date.getminutes() < 10 ? '0' + date.getminutes() : date.getminutes()
      let second = date.getseconds() < 10 ? '0' + date.getseconds() : date.getseconds()
      let currenttime = year + '-' + month + '-' + day + ' ' + hour + ':' + minute + ':' + second
      return currenttime
    }
getdatestr(1553161922000) // 2019-03-21 17:52:02

• 复制文本

<el-input :value="`${activityhost}/mobile/activity/join?id=${activityid}`" :readonly="true" ref="activeurl">
       <template slot="append">
               <el-button type="text" style="padding: 10px 20px;" @click="copyactiveurl">复制</el-button>
       </template>
</el-input>

copyactiveurl() {
    var activeurl = this.$refs.activeurl.$refs.input  // 要操作的dom
    activeurl.select()
    document.execcommand("copy");
}

或者:

<script type="text/javascript">

function copy()

{

　　var url=document.getelementbyid("textid"); // 获取要操作的dom

　　url2.select(); // 选择对象

　　document.execcommand("copy"); // 执行浏览器复制命令

　　alert("已复制好，可贴粘。");

}

</script>

<textarea cols="20" rows="10" id="textid">用户定义的代码区域</textarea>

<input type="button" onclick="copy()" value="点击复制代码" />