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         **js写本地文件** 最近在写系统相关任务配置的导入导出功能，其中导出功能设计的思路是将后台传来的json数组写到本地文件中，在网上找了相关代码，并做了一些相应的改进，最终的代码片段如下：    var fileName = "outportJob.txt";    var jobConDataArray = JSON.stringify(data.jobConDataArray);    var type = "text/plain;charset=utf-8";    var blob;    if (typeof window.Blob == "function") {        blob = new Blob([jobConDataArray], {type: type});    } else {        var BlobBuilder = window.BlobBuilder || window.MozBlobBuilder || window.WebKitBlobBuilder || window.MSBlobBuilder;        var bb = new BlobBuilder();        bb.append(value);        blob = bb.getBlob(type);    }    var URL = window.URL || window.webkitURL;    var bloburl = URL.createObjectURL(blob);    location.href = bloburl;    var type = blob.type;    var force_saveable_type = 'application/octet-stream';    if (type && type != force_saveable_type) { // 强制下载，而非在浏览器中打开        var slice = blob.slice || blob.webkitSlice || blob.mozSlice;        blob = slice.call(blob, 0, blob.size, force_saveable_type);    }    var url = URL.createObjectURL(blob);    var save_link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');    save_link.href = url;    save_link.download = fileName;    var event = document.createEvent('MouseEvents');    event.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);    save_link.dispatchEvent(event);    URL.revokeObjectURL(url);    JSON.stringify()将传来的json数组对象转换为字符窜，Blob对象的创建需要注意，因为Chrome浏览器无windows.BlobBuilder对象,这里需要特殊处理。var save_link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');这行代码最好不要进行改动。