JS 写入到文件

//js写文件

function doSave(value, type, name) {

var blob;

if (typeof window.Blob == "function") {

blob = new Blob([value], {

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);

var anchor = document.createElement("a");

if ('download' in anchor) {

anchor.style.visibility = "hidden";

anchor.href = bloburl;

anchor.download = name;

document.body.appendChild(anchor);

var evt = document.createEvent("MouseEvents");

evt.initEvent("click", true, true);

anchor.dispatchEvent(evt);

document.body.removeChild(anchor);

} else if (navigator.msSaveBlob) {

navigator.msSaveBlob(blob, name);

} else {

location.href = bloburl;

}

}

var test = {

a: [1, 2],

b: [3, 4]

}

doSave(test, "text/latex", "hello.txt");