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( (0)|(\d{1,3})([\,])(\d{2}))
we would like get pattern for pattern 0 or number format ***,** in input, where * is number. But we cann't find options for this regexp . How syntax will be right in this case?
0
***,**
Thanks!
<input type="text" name="cost" required pattern="( (0)|(\d{1,3})([\,])(\d{2}))">
enter the data in the specified format
The space at the beginning is what's causing you trouble.
<form action="foo.html"> <input type="text" required pattern="((0)|(\d{1,3})([\,])(\d{2}))" /> <button>Submit</button> </form>
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<input type="text" name="cost" required pattern="( (0)|(\d{1,3})([\,])(\d{2}))">enter the data in the specified format