javascript: validate chinese mobile number

gistfile1

function isMobile(object) {
    var s = document.getElementById(object.id).value;
    var reg0 = /^13\d{5,9}$/;
    var reg1 = /^153\d{4,8}$/;
    var reg2 = /^159\d{4,8}$/;
    var reg3 = /^0\d{10,11}$/;
    var my = false;
    if (reg0.test(s)) my = true;
    if (reg1.test(s)) my = true;
    if (reg2.test(s)) my = true;
    if (reg3.test(s)) my = true;
    if (s !== "") {
        if (!my) {
            // alert('请输入正确的手机号码');
            object.value = "";
            object.focus();
            return false;
        }
    }
    return true;
}