jquery - How to write a regex (JavaScript) for an id validation? -

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• javascript regular expression match x digits only 2 answers

basically validation simple, i'm totally new regex , need fired quickly, here goes: 1234567890 or 123456-7890 can be, obviously, number in range of 0 - 9 , length must either 10 or 11 characters.

can please show me way write function this?

function isid(id) {     return /^\d{6}-?\d{4}$/.test(id); }  isid("1234567890"); // true isid("123456-7890"); // true