JavaScript：文件保存自動下載函數：Save和SaveAs

/* Save函數和SaveAs函數 */
/* Save函數
* 使用：save(data).as(type) 或 save(data).name(name).as(type)
*/
function Save(data) {this.data=data;this.fileName="data"}
Save.prototype.as=function(type) {
    var link = document.createElement("a")
    var url = 'data:text/'+type+';charset=utf-8,\uFEFF' + encodeURI(this.data);
    link.href = url;
    link.download = this.fileName+"."+type;
    link.click();
}
Save.prototype.name=function(param) {
    this.fileName=param;
    return this;
}
var save=function(data){return new Save(data)};

/* SaveAs函數 
使用：第一個參數是要保存的數據，第二個參數是要保存的類型
*/
function SaveAs(data,type,name) {
    var link = document.createElement("a");
    var exportName=name?name:'data';
    var url = 'data:text/'+type+';charset=utf-8,\uFEFF' + encodeURI(data);
    link.href = url;
    link.download = exportName+"."+type;
    link.click();
}