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Meta Why doesn't \$ work?

posted 3y ago by celtschk‭  ·  edited 3y ago by DNB‭

Answer
#2: Post edited by user avatar DNB‭ · 2022-01-17T11:31:58Z (almost 3 years ago)
  • You need to use `\\$`, like this: \\$1.
  • The reason is that MathJax is interpreted in the browser, while Markdown is interpreted in the server.
  • If you write `\$`, then Markdown sees the backslash and therefore puts the dollar sight literally into the output (which it would have done anyway), *without* the slash. That's what is served to the browser, where MathJax then sees it as starting math content.
  • If you write `\\$`, then Markdown sees the first backslash as escaping the second backslash, therefore the output contains `\$`. This gets sent to the browser where MathJax then interprets the single backslash as taking the dollar sign literally instead of interpreting it as starting or ending math content.
  • You need to use `\\$`, like this: \\$1.
  • The reason is that MathJax is interpreted in the browser, while Markdown is interpreted in the server.
  • If you write `\$`, then Markdown sees the backslash and therefore puts the dollar sign literally into the output (which it would have done anyway), *without* the slash. That's what is served to the browser, where MathJax then sees it as starting math content.
  • If you write `\\$`, then Markdown sees the first backslash as escaping the second backslash, therefore the output contains `\$`. This gets sent to the browser where MathJax then interprets the single backslash as taking the dollar sign literally instead of interpreting it as starting or ending math content.
#1: Initial revision by user avatar celtschk‭ · 2022-01-15T06:38:20Z (almost 3 years ago)
You need to use `\\$`, like this: \\$1.

The reason is that MathJax is interpreted in the browser, while Markdown is interpreted in the server.

If you write `\$`, then Markdown sees the backslash and therefore puts the dollar sight literally into the output (which it would have done anyway), *without* the slash. That's what is served to the browser, where MathJax then sees it as starting math content.

If you write `\\$`, then Markdown sees the first backslash as escaping the second backslash, therefore the output contains `\$`. This gets sent to the browser where MathJax then interprets the single backslash as taking the dollar sign literally instead of interpreting it as starting or ending math content.