38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
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In JavaScript, we can use the ``++/++`` (backslash) character to escape special characters inside a string, a template literal, or a regular expression.
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It indicates that the next character should be treated as a literal character rather than as a special character or string delimiter.
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For instance, it is common to escape single quotes inside a string literal using the single quote delimiter like ``++'It\'s a beautiful day'++``.
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Escaping is only meaningful for special characters.
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== Why is this an issue?
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Escaping non-special characters in strings, template literals, and regular expressions doesn't affect their value. Therefore, useless escapes impact code readability and could even denote a bug in the code if the developer left it by mistake or intended to escape another special character instead.
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== How to fix it
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We can safely remove a useless character escape without changing the original behaviour.
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=== Code examples
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==== Noncompliant code example
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[source,javascript]
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----
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const regex = /[\[]/;
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const octal = '\8';
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const hello = 'Hello, world\!';
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const path = `\/${some}\/${dir}`;
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----
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==== Compliant solution
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[source,javascript]
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----
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const regex = /[[]/;
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const octal = '8';
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const hello = 'Hello, world!';
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const path = `/${some}/${dir}`;
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----
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