js日期格式完美验证函数

js日期格式完美验证函数function validateshort(form) {
        var bvalid = true;
        var focusfield = null;
        var i = 0;
        var fields = new array();
 
        var oshort = eval('new ' + jcv_retrieveformname(form) +  '_shortvalidations()');

        for (var x in oshort) {
            if (!jcv_verifyarrayelement(x, oshort[x])) {
                continue;
            }
            var field = form[oshort[x][0]];
            if (!jcv_isfieldpresent(field)) {
              continue;
            }

            if ((field.type == 'hidden' ||
                field.type == 'text' ||
                field.type == 'textarea' ||
                field.type == 'select-one' ||
                field.type == 'radio')) {

                var value = '';
                // get field's value
                if (field.type == "select-one") {
                    var si = field.selectedindex;
                    if (si >= 0) {
                        value = field.options[si].value;
                    }
                } else {
                    value = field.value;
                }

                if (value.length > 0) {
                    if (!jcv_isdecimaldigits(value)) {
                        bvalid = false;
                        if (i == 0) {
                            focusfield = field;
                        }
                        fields[i++] = oshort[x][1];

                    } else {

                        var ivalue = parseint(value, 10);
                        if (isnan(ivalue) || !(ivalue >= -32768 && ivalue <= 32767)) {
                            if (i == 0) {
                                focusfield = field;
                            }
                            fields[i++] = oshort[x][1];
                            bvalid = false;
                        }
                   }
               }
            }
        }
        if (fields.length > 0) {
           jcv_handleerrors(fields, focusfield);
        }
        return bvalid;
    }

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