解决下拉框没有设置value值，使得选择默认值时，$dom.cal()获取的值是text的值的问题

prescription-detail.html

@@ -161,7 +161,7 @@
		                    <label class="col-sm-3 control-label c-w100" >诊查费用：</label>
		                    <div class="col-sm-8 c-w270">
		                        <select id="feeSel" class="form-control" name="feeSel">
		                            <option>请按医生级别选择诊查费用</option>
		                            <option value="">请按医生级别选择诊查费用</option>
		                            {{each feeRes as fee i}}
		                            <option value="{{fee.registerType}} {{fee.registerFee}}">{{fee.registerTypeName}} {{fee.registerFee?fee.registerFee+'元': '0元'}}</option>
		                            {{/each}}