How to run this Jsom code ?

Question

I was looking for ways I can automatically change the content type of my files inside SharePoint online.
I'm not sure how the code is supposed to work. Added a Webpart, scripteditor on my document library.

At the part in the code where is says contenttypeId, I've pasted the content type id I want the files to be change to.

Nothing is happening. Not sure how the code is supposed to work.

Here is the code:

Please help on this ?

Answer 1

Hi @developer sp1 ,

Before running the code snippet, need to enable the Content Type Management for the library and add the Content Type needed in library settings,for example, I want to set Content Type "Images" for Item 7 which is an image:

Add the code using Script Editor Web Part:

Will set the content type successfully:

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