Submitting HTML characters to a Data Extension via Landing Page and SSJS

I have tried to push data to data extension through a landing page using SSJS. The form fields contain HTML characters (which will import to the Data Extension fine). I'm getting this error when I submit the form:

A potentially dangerous Request.Form value was detected from the client 

The error is being thrown because some of these fields contains < and > characters.

I am wondering if there is a way to replace those characters before submitting, or encode them in some way prior to entering the data extension? I know AMPscript has a Replace function, but I'm not sure how I can use it within SSJS to achieve what I'm after.

Is there a Replace function, or something similar within SSJS? Or another way to approach submitting these fields to the data extension?