动态改变表单元素的fieldLabel文字
表单元素(id必须定义)
var txtState = new Ext.form.ComboBox({ fieldLabel: '起运国', id:'txtState', resizable: true, mode: 'local', store: STATENAMEstore, displayField: 'STATENAME', valueField: 'STATENAME', anchor: '50%', triggerAction: 'all', editable: false, forceSelection: true, maxLength: 50 });
动态改变fieldLabel
Ext.getCmp('txtState').el.dom.parentNode.parentNode.parentNode.firstChild.innerHTML = '出口国家:';