ExtJS4 new discover_checkboxselectionmodel radio selection and selection restrictions

When doing extjsgrid, we often use the Checkbox to determine the selected row. In extjsgrid, Checkbox can also be implemented. In Extgrid, The CheckboxSelectionModel object class is used to display the Checkbox. Code: [javascript] // -------... Syn when we do extjs grid, we often use Checkbox to determine the selected row. In extjs grid, we can also implement Checkbox.

In Ext grid, the CheckboxSelectionModel object class is used to display the Checkbox.

Code:
[Javascript]
// ------------------------------------------------------ Select the column Mode
Var sm = new Ext. grid. CheckboxSelectionModel ({
DataIndex: "ID ",
}); Www.2cto.com

By default, Checkbox is the check box.
But what should we do if we need to select one option?
In fact, it is very easy to set the singleSelect attribute to true.
It is set to false by default, so it is a check.

Single-choice code:
[Javascript]
Var sm = new Ext. grid. CheckboxSelectionModel ({
DataIndex: "ID ",
SingleSelect: true
});