【JS】copy剪切板复制粘贴

const textarea = document.createElement("textarea"); 
 textarea.setAttribute("readonly", true); 
 textarea.value = '传入的值'; 
 document.body.appendChild(textarea); 
 textarea.setSelectionRange(0, textarea.value.length); 
 textarea.select(); 
 if (document.execCommand("copy")) { 
 this.$Message.success("复制成功"); 
 } else { 
 this.$Message.error("复制失败"); 
 } 
 document.body.removeChild(textarea);