js保存字符串到本地文件

js示例：

function fakeClick(obj) {
    var ev = document.createEvent("MouseEvents");
    ev.initMouseEvent("click", true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
    obj.dispatchEvent(ev);
    }
function exportRaw(name, data) {
    var urlObject = window.URL || window.webkitURL || window;
    var export_blob = new Blob([data]);
    var save_link = document.createElementNS("http://www.w3.org/1999/xhtml", "a")
    save_link.href = urlObject.createObjectURL(export_blob);
    save_link.download = name;
    fakeClick(save_link);
    } 
    
exportRaw('filename.txt', "要保存的字符串")