获取RadioGroup Extjs4中最后选择的选项(Get the last selected option in RadioGroup Extjs4)

获取RadioGroup Extjs4中最后选择的选项(Get the last selected option in RadioGroup Extjs4)

有没有办法获得广播组中最后选择的选项？

IS there any way to get the last selected option in the radio group?

最满意答案

您可以在更改时手动添加侦听器：

radGrp = {xtype: 'radiogroup', ... previousVal:undefined, listeners:[ change: function( this, newValue, oldValue, eOpts ) {this.previousVal = oldValue;} ]}

在此之后，您可以访问此属性

var getRadPrevious= function(){ return radGrp.previousVal; }

You can manually add listener on change:

radGrp = {xtype: 'radiogroup', ... previousVal:undefined, listeners:[ change: function( this, newValue, oldValue, eOpts ) {this.previousVal = oldValue;} ]}

After this you can access to this attribute

var getRadPrevious= function(){ return radGrp.previousVal; }