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JavaScript AJAX Basics AJAX Concepts Create an XMLHttpRequest Object

Posted by Silvia Ramos
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Silvia Ramos
Front End Web Development Techdegree Graduate 18,318 Points

LET and VAR

Why LET does not work? I've been stuck on this challenge for a while, till I decided to changed my LET for VAR instead. Doesn't AJAX work with LET?

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The "let" and "const" keywords have only been in the JavaScript language for a few years. Some older courses don't handle the new syntax. As a rule of thumb, if the videos use only "var" in the examples, stick with "var" in the challenges for that course.

And this is entirely unrelated to AJAX.