Question

userName = Global.getComponent('centerRegion').UserName.getValue();

该代码弹出错误

 {"browserEvent":"'Global.getComponent(...).UserName' is null or not an object","button":-1,"ctrlKey":false,"xy":[0,0]}

当我在此表单上运行时：

Using Form As New WebControls.Forms.Form
                With Form
                    .ID = "Test"
                    .ItemName = "connector"
                    With .Toolbar
                        .UseDefaultButtons = False
                        .AddButton(Forms.FormToolbar.ButtonType.Save)
                        .AddButton(Forms.FormToolbar.ButtonType.Cancel)
                        .AddButton("Test Connection", "testConnection", "icon-button-testconnection", , "Test")
                    End With

                    With .CenterRegion
                        .Id = "centerRegion"
                        With .AddFieldSet("Activate Service")
                            .Id = "activate"
                            .LabelWidth = 0
                            Dim cb As New Forms.Control("IsActive", "", "", Model.IsActive, Forms.Control.ControlType.CheckBox)
                            cb.BoxLabel = "Activate Service"
                            .AddControl(cb)
                        End With

                        With .AddFieldSet("Connection Parameters")
                            .Id = "params"
                            .LabelWidth = 150
                            .AddControl(New Forms.Control("UserName", "", "User Name", Model.UserName, Forms.Control.ControlType.TextField))
                            .AddControl(New Forms.Control("Password", "", "Password", Model.Password, Forms.Control.ControlType.Password))
                            .AddControl(New Forms.Control("LoginUrl", "", "URL", Model.LoginUrl))
                        End With
                    End With
                    Response.Write(.ToString)
                End With
            End Using

所有内容都显示并从屏幕上的表单中正确保存，所以值就在那里，但我认为我的Javascript是错误的。

编辑：

生成的HTML：

xtype:'fieldset'
,title:'Connection Parameters'
,id:'params',autoHeight:true
,titleCollapse:true
,border:true
,collapsible:false
,labelWidth:139
,anchor:'100%'
,items:[
{xtype:'textfield',validationEvent:'blur',enableKeyEvents:true,anchor:'100%',value:'IDWSSample',fieldLabel:'User Name',itemId:'UserName',name:'UserName',allowDecimals:false,decimalPrecision:0,validator:function(value){var isCustomValid = true;if (this.ux_isInitialized == true) {isCustomValid = function(value){if (value.match(/<[a-zA-Z!\/]{1}/)) return 'If using the "<" character, it must not be followed by "!" or "/" or any letter.';if (value.match(/.*&#.*/)) return 'If using the "&" character, it must not be followed by "#".';return true;}(value);if (typeof(isCustomValid) == 'string') return isCustomValid;}if (isCustomValid == null) isCustomValid = true;return isCustomValid;}}
,
{xtype:'textfield',validationEvent:'blur',enableKeyEvents:true,anchor:'100%',value:'TcYg7m*a',fieldLabel:'Password',itemId:'Password',name:'Password',allowDecimals:false,decimalPrecision:0,inputType:'password'
}
,
{xtype:'textfield',validationEvent:'blur',enableKeyEvents:true,anchor:'100%',value:'http://sample.idws.syndication.kbb.com/VehicleInformationService2008R2.svc?wsdl',fieldLabel:'URL',itemId:'LoginUrl',name:'LoginUrl',allowDecimals:false,decimalPrecision:0,validator:function(value){var isCustomValid = true;if (this.ux_isInitialized == true) {isCustomValid = function(value){if (value.match(/<[a-zA-Z!\/]{1}/)) return 'If using the "<" character, it must not be followed by "!" or "/" or any letter.';if (value.match(/.*&#.*/)) return 'If using the "&" character, it must not be followed by "#".';return true;}(value);if (typeof(isCustomValid) == 'string') return isCustomValid;}if (isCustomValid == null) isCustomValid = true;return isCustomValid;}}
,
{xtype:'combo_transform',validationEvent:'blur',enableKeyEvents:true,anchor:'100%',fieldLabel:'Market Value',id:'ddlMarketValues',itemId:'ddlMarketValues',name:'ddlMarketValues',allowDecimals:false,decimalPrecision:0,id:'EXT_ddlMarketValues'
,el:null
,typeAhead:true
,triggerAction:'all'
,transform:'ddlMarketValues'
,forceSelection:true
,selectOnFocus:true
,lazyRender:true
,resizable:true
,editable:false

Answer 1

查看生成的源代码并检查ASP.NET为centerRegion生成的名称。根据您的ASP.NET版本，可能会在名称中添加自动生成的后缀。

如果是这种情况，请更新名称以匹配正在生成的名称，并查看是否修复了该名称。

Answer 2

不确定Global.getComponents方法的来源，但我的猜测是你有错字或者你没有正确访问字段值。尝试使用常规javascript查找字段，或者使用jQuery更轻松。

尝试：

var userName = document.getElementById('UserName').value;

或使用jQuery：

var userName = $("#UserName").val();

...假设'centerRegion'和'UserName'是您网页上元素的ID值。

如果您没有使用jQuery，那么您可以尝试asp.net方式：

var userName = $find('UserName','centerRegion').value;

Javascript没有从表单中提取价值

2 个答案: