This example shows how to display item icon in ComboBox.
<div class="easyui-panel" style="width:100%;max-width:400px;padding:30px 60px;">
<div style="margin-bottom:20px">
<input class="easyui-combobox" style="width:100%;" data-options="
showitemicon: true,
data: [
{value:'add',text:'add',iconcls:'icon-add'},
{value:'del',text:'delete',iconcls:'icon-remove'},
{value:'save',text:'save',iconcls:'icon-save',selected:true},
{value:'cancel',text:'cancel',iconcls:'icon-cancel'},
{value:'undo',text:'undo',iconcls:'icon-undo'},
{value:'redo',text:'redo',iconcls:'icon-redo'}
],
editable: false,
panelheight: 'auto',
label: 'perform action:',
labelposition: 'top'
">
</div>
</div>