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How to write a regular expression that can only input a combination of numbers and letters in the input input box in HTML

2025-01-16 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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This article mainly introduces how to write the regular expression that can only input the combination of numbers and letters in the input input box in HTML. It is very detailed and has a certain reference value. Interested friends must read it!

Here's how regular expressions are often used by input:

Only positive integers are allowed: only numbers and letters are allowed: uppercase and lowercase letters, numbers, Underscore: allow you to enter numbers and decimal points: the above is all the content of the article "how to write regular expressions that only input the combination of numbers and letters in the input input box in HTML" Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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