let isM3U;
        function convert() {
            const myInput = document.getElementById('myInput').value;
            isM3U = myInput.startsWith('#EXTM3U');
            let myOutput = '';
            if (isM3U) {
                // 执行M3U转TXT的逻辑
                const lines = myInput.split('\n');
                let currentGroup = null;
                let channelName = '';
                const groupMap = {};
                for (const line of lines) {
                    const trimmedLine = line.trim();
                    if (trimmedLine.startsWith('#EXTINF')) {
                        const parts = trimmedLine.split('"');
                        channelName = parts[parts.length - 1].trim();
                        channelName = channelName.replace(/^,/, '');//去掉句首,号
                        if (trimmedLine.includes('group-title="')) {
                            currentGroup = trimmedLine.split('group-title="')[1].split('"')[0].trim();
                        }
                    } else if (trimmedLine.startsWith('http') || trimmedLine.startsWith('rtmp')) {
                        if (currentGroup &&!groupMap[currentGroup]) {
                            myOutput += `${currentGroup},#genre#\n`;
                            groupMap[currentGroup] = true;
                        }
                        myOutput += `${channelName},${trimmedLine}\n`;
                    }
                }
            } else {
                // 执行TXT转M3U的逻辑
                const lines = myInput.split('\n');
                let currentGroup = null;
                myOutput = '#EXTM3U x-tvg-url="https://live.fanmingming.cn/e.xml"\n';
                for (const line of lines) {
                    const trimmedLine = line.trim();
                    if (trimmedLine!== '') {
                        if (trimmedLine.includes('#genre#')) {
                            currentGroup = trimmedLine.replace(/,#genre#/, '').trim();
                        } else {
                            const parts = trimmedLine.match(/^([^,]*),(.*)$/);
                            if (parts) {
                                const originalChannelName = parts[1].trim();
                                const channelLink = parts[2].trim();
                                const processedChannelName = originalChannelName.replace(/(CCTV|CETV)-(\d+).*/, '$1$2');
                                myOutput += `#EXTINF:-1 tvg-name="${processedChannelName}" tvg-logo="https://live.fanmingming.cn/tv/${processedChannelName}.png"`;
                                if (currentGroup) {
                                    myOutput += ` group-title="${currentGroup}"`;
                                }
                                myOutput += `,${originalChannelName}\n${channelLink}\n`;
                            }
                        }
                    }
                }
            }
            document.getElementById('myOutput').value = myOutput;
        }

        function clearScreen() {
            document.getElementById('myInput').value = '';
            document.getElementById('myOutput').value = '';
        }

        function copyContent() {
            const myOutput = document.getElementById('myOutput');
                myOutput.select();
                document.execCommand('copy');
                alert('内容已复制到剪贴板！');
        }

        function saveAs() {
            const m3uContent = document.getElementById('myOutput').value;
            const blob = new Blob([m3uContent], { type: 'text/plain' });
            const a = document.createElement('a');
            a.href = URL.createObjectURL(blob);
            //alert(isM3U);
            if (isM3U) {a.download = 'TMR.txt';  } 
                   else { a.download = 'TMR.m3u';}
            document.body.appendChild(a);
            a.click();
            document.body.removeChild(a);
        }