TheKidVince

var ctx = SP.ClientContext.get_current();
// Change your list title here
var list = ctx.get_web().get_lists().getByTitle("Documents");
list.set_allowDeletion(true);
list.update();
ctx.executeQueryAsync(
  function (o, d) {
      console.log("You can now delete the list");
  },
  function (o, e) {

TheKidVince

// By Vincent Rothwell
// http://blog.thekid.me.uk
//
// Taken from blog post http://bit.ly/Create-XLSX-JavaScript-SharePoint

function createSpreadsheetData(number) {
    var openedSpreadsheet = new openXml.OpenXmlPackage(blankSpreadsheet);

    var workbookPart = openedSpreadsheet.workbookPart();
    var wbXDoc = workbookPart.getXDocument();