查看“Widget:Copytext”的源代码

<!--生成一个不可见的input元素。点击按钮后复制input中的内容。-->
<input id="copytext-<!--{$id|regex_replace:"/(script|<script)/":""}-->" type="text" value="<!--{$value|regex_replace:"/(script|<script)/":""}-->" style="position:absolute;opacity:0;z-index:-1" />
<button class="<!--{$type|regex_replace:"/(script|<script)/":""}-->" onclick="document.querySelector('#copytext-<!--{$id|regex_replace:"/(script|<script)/":""}-->').select();if(document.execCommand('Copy')){mw.notify('复制成功。')};" style="<!--{$style|regex_replace:"/(script|<script)/":""}-->"><!--{$text|regex_replace:"/(script|<script)/":""}--></button>