我的数字输入应该只接受数字[0-9] 和 [-] 字符

Question

should accept and [0-9] and [-] character and it should be max and min 12 characters and 123-456-7890 format

<input type="number" onchange="regex.test(^[0-9-]*$)">

error : Expression expected

Answer 1

do you need one string like 123-456-7890? try this:

var t = /\d{3}-\d{3}-\d{4}/g
t.test('123-456-7890')

Answer 2

Try using this regex -

var regex = /^\d{3}-\d{3}-\d{4}$/
regex.test('123-123-1234');