小编点评

```javascript copy(){ const input = document.createElement('input'); input.setAttribute('id', 'copyInput'); input.setAttribute('value', this.inviteCode); // 设置一些样式 input.style.cssText = ` font-family:siyuan; max-width:60%; min-width: 150px; padding:0 14px; height: 40px; color: rgb(255, 255, 255); line-height: 40px; text-align: center; border-radius: 4px; position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 999999; background: rgba(0, 0, 0,.7); font-size: 28px; `; // 模拟复制功能 if (document.execCommand('copy')) { Toast('复制成功',500); const duration = isNaN(500) ? 2000 : 500; const m = document.createElement('div'); m.innerHTML = \"复制成功\"; m.style.cssText = ` font-family:siyuan; max-width:60%; min-width: 150px; padding:0 14px; height: 40px; color: rgb(255, 255, 255); line-height: 40px; text-align: center; border-radius: 4px; position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 999999; background: rgba(0, 0, 0,.7); font-size: 28px; `; document.body.appendChild(m); setTimeout(function() { document.body.removeChild(m); }, d * 1000); } // 清除输入框 input.remove(); } ``` 这个代码会在页面加载时创建一个复制按钮，并在按钮被点击时模拟复制操作。复制后的内容会被添加到页面顶部一个固定位置的窗口中。

正文

copy(){
var input = document.createElement('input');
input.setAttribute('id', 'copyInput');
input.setAttribute('value', this.inviteCode);
document.getElementsByTagName('body')[0].appendChild(input);
document.getElementById('copyInput').select();
if (document.execCommand('copy')) {
Toast('复制成功',500);
duration = isNaN(500) ? 2000 : 500;
var m = document.createElement('div');
m.innerHTML = "复制成功";
m.style.cssText = "font-family:siyuan;max-width:60%;min-width: 150px;padding:0 14px;height: 40px;color: rgb(255, 255, 255);line-height: 40px;text-align: center;border-radius: 4px;position: fixed;top: 50%;left: 50%;transform: translate(-50%, -50%);z-index: 999999;background: rgba(0, 0, 0,.7);font-size: 28px;";
document.body.appendChild(m);
setTimeout(function() {
var d = 0.5;
m.style.webkitTransition = '-webkit-transform ' + d + 's ease-in, opacity ' + d + 's ease-in';
m.style.opacity = '0';
setTimeout(function() {
document.body.removeChild(m)
}, d * 1000);
}, duration);
}
document.getElementById('copyInput').remove();
}