js实现点击按钮复制内容

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<img src="./images/copy.png" @click="copyUrl" />       copyTextArea() {       const shareUrl = "http://www.xxx.com";       const textarea = document.createElement("textarea");       textarea.value = shareUrl;       // 将textarea添加到文档中       document.body.appendChild(textarea);       // 选中textarea中的文本       textarea.select();       try {         // 尝试复制选中的文本         const successful = document.execCommand("copy");         if (successful) {           this.$toast("复制成功！");         }       } catch (err) {         this.$toast(           "复制失败，请尝试打开浏览器剪切板读取权限，或复制浏览器页面地址进行分享"         );       }     },     // 复制链接     copyUrl() {       const shareUrl = "http://www.xxx.com";       // 创建textarea元素       if (navigator.clipboard) {         navigator.clipboard           .writeText(shareUrl)           .then(() => {             this.$toast("复制成功！");           })           .catch(() => {             this.copyTextArea();           });       } else {         this.copyTextArea();       }     },