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JavaScript - get number after word using regex
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In this article, we would like to show you how to
Quick solution:
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const text = 'some-word123';2
const expression = /some-word(\d+)/i; // new RegExp('some-word(\\d+)', 'i');3
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const match = expression.exec(text);5
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if (match) {7
console.log(match[1]); // '123'8
}
In this example, we construct a regular expression that matches some-word with a number after the word. To get only the number group (\d+) we need to use brackets notation (match[1]).
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const expression = /some-word(\d+)/i; // new RegExp('some-word(\\d+)', 'i');2
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const findNumber = (text) => {4
const match = expression.exec(text);5
if (match) {6
return match[1];7
}8
return null;9
};10
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// Usage example:13
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console.log(findNumber('some-word123')); // 12315
console.log(findNumber('some text... some-word456')); // 456
