js把文字复制到粘贴板

        function copyToClipboard(text) {
            if (text.indexOf('-') !== -1) {
                let arr = text.split('-');
                text = arr[0] + arr[1];
            }
            var textArea = document.createElement("textarea");
            textArea.style.position = 'fixed';
            textArea.style.top = '0';
            textArea.style.left = '0';
            textArea.style.width = '2em';
            textArea.style.height = '2em';
            textArea.style.padding = '0';
            textArea.style.border = 'none';
            textArea.style.outline = 'none';
            textArea.style.boxShadow = 'none';
            textArea.style.background = 'transparent';
            textArea.value = text;
            document.body.appendChild(textArea);
            textArea.select();

            try {
                var successful = document.execCommand('copy');
                var msg = successful ? '成功复制到剪贴板' : '该浏览器不支持点击复制到剪贴板';
                alert(msg);
            } catch (err) {
                alert('该浏览器不支持点击复制到剪贴板');
            }
        }
原文地址:https://www.cnblogs.com/Angel-szl/p/11225300.html