org.sonar.l10n.javascript.rules.javascript.S6325.html Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of javascript-checks Show documentation

There is a newer version: 10.20.0.29356

Why is this an issue?
Using regular expression literals is recommended over using the RegExp constructor calls if the pattern is a literal. Regular
expression literals are shorter, more readable, and do not need to be escaped like string literals. They can also be more performant because regular
expression literals are compiled only once when the script is loaded.
new RegExp(/foo/);
new RegExp('bar');
new RegExp('baz', 'i');
new RegExp("\\d+");
new RegExp(`qux|quuz`);

Using the RegExp constructor is suitable when the pattern is computed dynamically, for example, when the user provides it. Otherwise,
you should prefer the more concise syntax of regular expression literals.
/foo/;
/bar/;
/baz/i;
/\d+/;
/qux|quuz/;
new RegExp(`Dear ${title},`);

Resources
Documentation

   MDN web docs - Regular expressions 
   MDN web docs - RegExp