正则怎么让输入框只输入正整数?

Question

在一个input框，希望正则验证输入的值只是正整数

Answer 1

How to make the input box only input positive integers with regular expressions? - PHP Chinese website Q&A - How to make the input box only input positive integers with regular expressions? - PHP Chinese website Q&A

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Answer 2

<input type="text" pattern="^[1-9]\d*">