Object doesn't support property or method 'getFolderByServerRelativeURL'

Question

I am trying to move a file from one folder to another on my SharePoint 2013 server. I tried using the answer with 5 upvotes on this link: How do I move files from one document library to another using JSOM?.

But, when the script hits var folderSrc = web.getFolderByServerRelativeUrl(sourceLib);, an error message appears in the console:

Object doesn't support property or method 'getFolderByServerRelativeURL'

I'm guessing web was not properly loaded. What do I need to do to load web correctly?

Answer 1

run your code under this

SP.SOD.executeFunc('SP.js', 'SP.ClientContext', function() {
      var clientContext = new SP.ClientContext.get_current();    

      //write code here to get web object and then server relative url 

});