Ajax request using ExtJS

gistfile1.js

    Ext.Ajax.request({
        url : 'reportActionAjax.jsp' ,
        params : {'id' : id, 'action' : 'delete'},
        method: 'GET',
        autoAbort: false,
        timeout: 180000,
        success: function (result, request) {
            var response = Ext.util.JSON.decode(result.responseText);
            var id = response.id; 
        },
        failure: function (result, request) { }
    });