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j$(\'#payment\').change(function() {
                var payment = j$(this).children(\'option:selected\').val();
                if (payment == \'Y\') {
                     j$(\'#paymentNo\').removeAttr("disabled");
                } else if (payment == \'N\') {
                     j$(\'#paymentNo\').val("");
                     j$(\'#paymentNo\').attr(\'disabled\', \'disabled\');
                } else {
                     j$(\'#paymentNo\').removeAttr("disabled");    
                }
            });
            j$(\'#isSend\').change(function() {
                var isSend = j$(this).children(\'option:selected\').val();
                if (isSend == \'true\') {
                     j$(\'#orderSendStartDate\').removeAttr("disabled");
                     j$(\'#orderSendEndDate\').removeAttr("disabled");
                } else if (isSend == \'false\') {
                     j$(\'#orderSendDate input\').val("");
                     j$(\'#orderSendDate input\').attr(\'disabled\', \'disabled\');
                } else {
                     j$(\'#orderSendStartDate\').removeAttr("disabled");
                     j$(\'#orderSendEndDate\').removeAttr("disabled"); 
                }
            });

dateTimePicker无法直接进行清空或者只读设置，只能到其上一层的td，对td内所有的input进行清空和只读