Example 1: Undeclared variables
When you try to run the example code below which has not declared the variable "c" properly.
You'll get an error informing that "c" is not definied correctly.
Example 2: Incorrect closing of <style> tags
When you try to run the example code below in which the script tag is not closed correctly.
You'll get and error informing you that not all <script> tags have been closed correctly.
Example 3: Correct syntax
When you try to run the example code below which has correct syntax.
You'll see a succes check besides the "Check JS Syntax" button.