下载相关的集中方法

<a href="../../static/xxx.xlsx" download="xxx.xlsx">下载</a> 
href为下载的路径， download为下载后文件的名称

window.open("../../static/xxx.xlsx")
window.open("https://mp.csdn.net/postedit/static/xxx.xlsx")

$('.btn').on('click', function() {
        var $form = $('<form method="GET"></form>');
        $form.attr('action', '/static/xxxxxxx.docx');
        $form.appendTo($('body'));
        $form.submit();
      })