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Trim the spaces before parsing a number

Written byPhuoc Nguyen

Created

23 Feb, 2021

Last updated

27 Feb, 2021

Tags

JavaScript

Contributors

Both `Number()` and `parseInt` accept the spaces in input. But be aware that you could get different result when passing a value with spaces as following:

parseInt('   5   '); // 5
parseInt('12 345'); // 12, not 12345

To avoid the similar situations, you should remove all spaces before parsing:

parseInt(value.replace(/\s+/g, ''), 10);

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Trim the spaces before parsing a number

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