trying to add a new jquery validator method

I am trying to add a validator rule which will work like:

When we apply this rule on an element then it should only be validated on the non-empty values of the elements which we passed through params. Means, it must validate itself if and only if one of the passed elements have non-empty value.

the rule what I am trying:

jQuery.validator.addMethod("reqAfter",function(a,b,c){
    for(var i in c){
        var $d=$(c[开发者_StackOverflow社区i]);
        return !($d.length&&$d.val()!==""&&a=="");
    }
},"Please provide some value!");

like:

rules: {
    sField: { reqAfter: ['#startD', '#endD'] },
    startD: { regex: /^(\d{4,4})-(\d{2,2})-(\d{2,2})$/, reqAfter: ['#sField'] },
    endD: { regex: /^(\d{4,4})-(\d{2,2})-(\d{2,2})$/, reqAfter: ['#sField', '#startD'] }
}

for this form:

I sort it by myself.

Working validator method is:

jQuery.validator.addMethod("reqAfter", function (e, b, a) {
    if (!a || a.length < 1) return !0;
    else {
        var b = !1,
            c;
        for (c in a) {
            var d = $(a[c]);
            if (d.length && d.val() !== "") {
                b = e === "" ? !0 : !1;
                break
            }
        }
        return !b
    }
}, "Please provide some value!");

Thanks to me...