检查值的长度isnumeric jquery

Question

Telephone:

if (!$.isNumeric($("#phone").val())) {

alert("error invalid number");

    }

I am making a simple form that allows the user to sign up but my problem is how to avoid the user should not click only 1 length of value. let I say the length should less than 7, I'll try to add && $("#phone").val().length < 7 in if statement. but it wont work :(

Answer 1

You are using an && when you need to use an ||. If it is not numeric or it its length is less than 7.

if (! $.isNumeric($("#phone").val()) || $("#phone").val().length < 7) {
    alert("Phone is not numeric");
}

You can check at this small jsfiddle

http://jsfiddle.net/tsot1pt2/