移动端点击按钮复制文本内容，具体内容如下所示:
<div>
<p>邀请码</p>
//
<p id="inviteCode" class="inviteCode">{{invite_code}}</p>
<input id="inviteCode" class="inviteCode" type="text" />
<p class="copy">复制</p>
</div>
copy() {
var Url2 = this.invite_code;
//var oInput = document.createElement("input");
var oInput = document.getElementById("inviteCode");
//oInput.value = Url2;
// document.body.appendChild(oInput);
oInput.select();// 选择对象
//document.execCommand("Cut","false",null);// 执行浏览器剪切命令
document.execCommand("Copy");// 执行浏览器复制命令
//oInput.className = "oInput";
//oInput.style.display = "none";
alert("复制成功");
//console.log(document.execCommand("Copy"))
},