<template>
  <div>
    <textarea ref="letters"></textarea>
    <button @click="copyToClipboard(‘letters‘)">復制</button>
  </div>
</template>
<script>
  export default {
    data() {
      
 
return {
        loading: false
      }
    },
    created() {
      this.$nextTick(function () {
        this.$refs.letters.value = ‘用戶名：張三\n性別：男\n電話號碼：15812322222‘;
      })
    },
    methods: {
      //復制內容到粘貼板
      copyToClipboard(elemRef) {
        let target;
        let succeed = false;
        
 
if(this.$refs[elemRef]){
          target = this.$refs[elemRef];
          // 選擇內容
          let currentFocus = document.activeElement;
          target.focus();
          target.setSelectionRange(0, target.value.length);
          // 復制內容
          try {
            succeed = document.execCommand("copy"
 
);
            alert("內容復制成功");
          } catch (e) {
            succeed = false;
          }
          // 恢復焦點
          if (currentFocus && typeof currentFocus.focus === "function") {
            currentFocus.focus();
          }
        }
        return succeed;
      },
    }
  }
</script>

vue復制textarea文本域內容