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input 如何禁止输入中文或者禁止输入数字

input 禁止输入中文或者禁止输入数字


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你可以用pattern属性通过正则表达式来限制。

但是后端代码你还是要检查,pattern是可以改绕过的,记住一个原则:所有来自前端的数据都是不可信的。


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