Can you explain the variance between "+" and "\+"?

When needing to use the special character +, is it necessary to use "+" or "\+"?

I performed a comparison and found that they both yield the same result.

console.log("Comparison Result: "   +   ("\+" == "+"));   //returns true

Is the backslash necessary in this scenario?

Answer №1

When a backslash is used in a string, it signals that the next character is a special character (like \n for a new line). If the following character is not a special one, it will be treated as itself. For example, \+ has no specific meaning, so it will simply be recognized as a +

Answer №2

Special symbols aren't always considered special; their significance depends on the context in which they are used. For example, in a JavaScript string, the plus sign (+) is not treated as a special character at all. However, it holds importance in contexts such as URLs, regular expressions, and mathematical formulas.

Regarding the \+ combination, it represents an unfamiliar escape sequence. Consequently, the backslash is simply disregarded:

When it comes to characters that are not explicitly defined [...], a preceding backslash is generally overlooked. It's worth noting that this practice is outdated and best avoided.

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