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Testing for Matches

Regular expression objects have a number of methods. The simplest one is test. If you pass it a string, it will return a Boolean telling you whether the string contains a match of the pattern in the expression.

console.log(/abc/.test("abcde")); //
// → true
// → false

A regular expression consisting of only nonspecial characters simply represents that sequence of characters. If abc occurs anywhere in the string we are testing against (


Cover of Eloquent JavaScript, 3rd Edition


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