// 保留JSON文件saveJSONFile = (data, filename) => {    if (typeof data === 'object') {        // data = JSON.stringify(data, null, 4)        // 勾销序列化丑化        data = JSON.stringify(data)    }    // 构建下载对象    const blobURL = new Blob([data], { type: 'text/json' })    const tempLink = document.createElement('a')    tempLink.style.display = 'none';    tempLink.href = window.URL.createObjectURL(blobURL)    tempLink.download = `${filename}.json`    // 模仿点击    document.body.appendChild(tempLink);    tempLink.click();    // 删除DOM、开释对象URL    setTimeout(() => {        document.body.removeChild(tempLink);        window.URL.revokeObjectURL(blobURL);    }, 200)}