<form>
<input type="text" name="" pattern="^[a-zA-Z_\-]+$" required />
<input type="submit">
</form>
Nesse exemplo acima só é permitido caracteres de a à z minúsculo e maiúsculo.
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<form>
<input type="text" name="" pattern="^[a-zA-Z_\-]+$" required />
<input type="submit">
</form>
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1 |
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0 |
<form>
<input type="text" name="" pattern="^[a-zA-Z_\- ]+$" required />
<input type="submit">
</form>
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0 |