extjs code to initialize checkboxgroup value_extjs

Copy code The code is as follows:

Ext.override(Ext.form.CheckboxGroup,{

setValueForItem : function(val){ //Multiple option values ​​separated by commas
val = "," val ","
this.items.each(function(item) {
if ( val.indexOf(item.inputValue) > -1) {
item.setValue(true);
} else {
item.setValue(false);
}
});
}
,clearValueForItem:function(){ // Clear all values ​​
this.items.each(function(item) {
item.setValue(false);
});
}
});